CN111041887A - Antibacterial, mildew-proof and moth-proof rice paper raw pulp, prepared rice paper and preparation method - Google Patents
Antibacterial, mildew-proof and moth-proof rice paper raw pulp, prepared rice paper and preparation method Download PDFInfo
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- CN111041887A CN111041887A CN201911363479.4A CN201911363479A CN111041887A CN 111041887 A CN111041887 A CN 111041887A CN 201911363479 A CN201911363479 A CN 201911363479A CN 111041887 A CN111041887 A CN 111041887A
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- 230000002045 lasting effect Effects 0.000 description 3
- -1 polyoxyethylene Polymers 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 2
- KWIUHFFTVRNATP-UHFFFAOYSA-N Betaine Natural products C[N+](C)(C)CC([O-])=O KWIUHFFTVRNATP-UHFFFAOYSA-N 0.000 description 2
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- KWIUHFFTVRNATP-UHFFFAOYSA-O N,N,N-trimethylglycinium Chemical compound C[N+](C)(C)CC(O)=O KWIUHFFTVRNATP-UHFFFAOYSA-O 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
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- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
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- 229930003935 flavonoid Natural products 0.000 description 2
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- 235000019764 Soybean Meal Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
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- 235000011389 fruit/vegetable juice Nutrition 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000010409 ironing Methods 0.000 description 1
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
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- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
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Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
- D21H11/12—Pulp from non-woody plants or crops, e.g. cotton, flax, straw, bagasse
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/02—Material of vegetable origin
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
- D21H17/24—Polysaccharides
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/36—Biocidal agents, e.g. fungicidal, bactericidal, insecticidal agents
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Paper (AREA)
Abstract
The invention provides an antibacterial, mildewproof and mothproof raw rice paper stock, prepared rice paper and a preparation method thereof. The preparation method comprises the following steps: the raw rice paper pulp is prepared by fishing paper, squeezing, baking and pasting and drying the paper in sequence, and chitosan acetic acid solution is added into the liquor obtained in the paper fishing process. The invention provides the rice paper with the functions of resisting bacteria, preventing mildew and preventing worm damage, and meanwhile, the writing effect and the natural color of the rice paper are not influenced.
Description
Technical Field
The invention belongs to the field of rice paper manufacturing, and relates to rice paper raw stock, prepared rice paper and a preparation method, in particular to antibacterial, mildew-proof and moth-proof rice paper raw stock, prepared rice paper and a preparation method.
Background
The Xuan paper is the most important of four treasures in the study, and has flexible texture, beautiful texture, white and fine texture, clear ink rhyme, lasting quality, and capacity of showing the color and wetness of the writing ink and changing infinitely, so that the picture is interesting. Under the writing of ancient poetry, the Xuan paper was known as the king of paper. The Xuan paper is originated from China, and the generation of the Xuan paper plays an important role in the development of national calligraphy and painting arts.
The making process of the rice paper is mainly divided into eighteen steps, and the traditional method comprises the steps of steaming branches of the pteroceltis tatarinowii bunge, soaking, peeling, drying in the sun, adding lime and soda (or sodium bicarbonate), steaming again, removing impurities, washing, tearing into thin strips, airing in the places facing the sun, and whitening after sun and rain. Then pulping the slivers into glue: pulping the processed bark and forage respectively, adding vegetable gum (such as succus Averrhoae Carambolae), stirring, making into paper with bamboo curtain, brushing on kang, oven drying, cutting, and finishing into sheet.
In the current rice paper manufacturing industry, the contradiction between the supply and demand of raw materials is prominent, and the requirement of production energy expansion is difficult to meet. The raw materials of the rice paper mainly comprise wingceltis bark and sand field straw, both of which are non-economic crops, the economic return rate is low, the planting area is reduced year by year, the raw material supply is in short supply, the production and processed paper products cannot be met, meanwhile, the existing rice paper has the defects that the existing rice paper is easy to damp and mildew and easy to be damaged by worms in the using and storing processes, and the like, and the large-scale production of the rice paper is greatly limited.
CN108411703A discloses a moisture-proof rice paper material, which comprises the following components in parts by weight: 9-14 parts of pteroceltis tatarinowii bark fiber, 18-32 parts of corna straw fiber, 6-11 parts of antioxidant, 2-7 parts of compatilizer, 0.8-3.4 parts of flame retardant, 26-43 parts of alfalfa fiber, 22-35 parts of reed stem fiber, 14-29 parts of basalt fiber, 23-37 parts of soybean meal and 32-46 parts of glutinous rice pulp; the soluble solid content of the glutinous rice pulp is 42% -52%; the monofilament diameter of the basalt fiber is 0.35-0.65um, and the monofilament length of the basalt fiber is 3-9 mm.
CN109112870A discloses a rice paper raw stock, which comprises the following components by mass percent: 70-75 parts of cornfield straw, 28-35 parts of pteroceltis tatarinowii bark, 1-1.5 parts of plant photo-oxidant, 1-1.5 parts of auxiliary agent and 8-10 parts of calcium active powder, wherein the auxiliary agent is a mixture of a paper flame retardant and carambola juice agilawood powder.
CN106958164A discloses a method for preparing rice paper by using plant gum to replace animal gum to prepare collosol water, which comprises the following steps: the materials are mixed according to the following weight portions: 190 of rice paper straw pulp 180, 2-4 of sisal hemp, 3-5 of straws, 1-3 of viscose fibers, 0.3-0.5 of alkylphenol polyoxyethylene, 0.1-0.2 of copper sulfate, 0.01-0.02 of polymalic acid, 0.1-0.3 of coconut oil acid, 0.1-0.2 of betaine, 0.1-0.2 of polyvinyl alcohol and 0.1-0.3 of oxidized starch; soaking sisal hemp and straw in deionized water for 10-12 hours, grinding the sisal hemp and straw into pulp, putting the pulp into a closed cylinder, introducing water vapor with the temperature of 110-300 ℃ and the pressure of 1.0-5.0 MPa, hydrolyzing, drying and grinding the pulp into powder to obtain modified fiber for later use; adding appropriate amount of water into polymalic acid, coconut oleic acid and betaine, stirring at 40-60 deg.C for 0.5-1h, adding modified fiber, oxidized starch and copper sulfate, stirring, filtering, washing the filter residue with distilled water until the filtrate is neutral, and drying at 50-70 deg.C to obtain fiber antibacterial powder; uniformly mixing the fiber antibacterial powder with the rest raw materials prepared in the step (1), and preparing the rice paper by a conventional process; spraying collodion alum solution on the rice paper, and then ironing to obtain the rice paper; the collosol alum solution is prepared from the following raw materials in parts by weight: 8-15 parts of vegetable gum, 3-5 parts of sodium alginate, 2-8 parts of alum and a proper amount of water.
According to the prior art mastered at present, the research on the antibacterial, mildew-proof and moth-proof effects of the rice paper is less, the preparation process is complicated, and the large-scale production is not facilitated, so that the antibacterial, antiseptic and moth-proof effects of the rice paper are fundamentally realized by modifying the existing rice paper raw stock.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the rice paper raw stock with the functions of resisting bacteria, mildew and moth eating, the prepared rice paper and the preparation method.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the invention provides an antibacterial, mildewproof and mothproof raw rice paper stock, which comprises wingceltis bark fibers, cornfield straw fibers, wormwood, aloe, liquorice and clove.
According to the invention, the mugwort, the aloe, the liquorice and the clove are added into the rice paper raw stock, so that the rice paper raw stock has the performances of antibiosis, mildew prevention, moth prevention and the like. Wherein, the wormwood has strong special smell and can play a role in expelling insects; aloe is a substance with strong antibacterial property, and can kill fungi, mold, bacteria, virus, etc., and inhibit the development and propagation of pathogens; the liquorice contains flavonoid compounds and has a bactericidal effect; flos Caryophylli can inhibit growth of bacteria and microorganisms.
As a preferable technical scheme of the invention, the rice paper raw stock comprises the following components in parts by mass:
wherein the mass fraction of the pteroceltis tatarinowii bark fiber can be 25 wt%, 26 wt%, 27 wt%, 28 wt%, 29 wt%, 30 wt%, 31 wt%, 32 wt%, 33 wt%, 34 wt% or 35 wt%; the mass fraction of the shatian straw fiber may be 60 wt%, 61 wt%, 62 wt%, 63 wt%, 64 wt%, 65 wt%, 66 wt%, 67 wt%, 68 wt%, 69 wt% or 70 wt%; the mass fraction of wormwood may be 1.0 wt%, 1.5 wt%, 2.0 wt%, 2.5 wt%, 3.0 wt%, 3.5 wt%, 4.0 wt%, 4.5 wt%, or 5.0 wt%; the mass fraction of aloe may be 1.0 wt%, 1.5 wt%, 2.0 wt%, 2.5 wt%, 3.0 wt%, 3.5 wt%, 4.0 wt%, 4.5 wt%, or 5.0 wt%; the mass fraction of licorice may be 0.3 wt%, 0.4 wt%, 0.5 wt%, 0.6 wt%, 0.7 wt%, 0.8 wt%, 0.9 wt%, or 1.0 wt%; the mass fraction of clove may be 0.3 wt.%, 0.4 wt.%, 0.5 wt.%, 0.6 wt.%, 0.7 wt.%, 0.8 wt.%, 0.9 wt.% or 1.0 wt.%, but is not limited to the values listed, and other values not listed within this range of values are equally applicable.
As a preferable technical scheme of the invention, the rice paper raw stock comprises the following components in percentage by mass:
in a second aspect, the invention provides an antibacterial, mildewproof and mothproof rice paper, which is prepared from the rice paper raw stock of the first aspect.
As a preferable technical scheme of the invention, the antibacterial rate of the rice paper is more than 99%.
Preferably, the rice paper has a mildew-proof grade of 0.
Aiming at the problems that bacteria and sweat stains on hands can be brought to the rice paper when the current rice paper is in contact with limbs for a long time in the processes of writing, drawing and turning over, bacteria such as escherichia coli, staphylococcus aureus and mould are easy to breed, and the service life of the rice paper is influenced; moreover, the rice paper is greatly influenced by the environmental humidity, and is easy to damp and mildew particularly in the humid weather; the rice paper provided by the invention has the functions of resisting bacteria, preventing mildew and preventing worm damage, does not influence the writing effect and the natural color of the rice paper, is added during preparation, and has the effects of high efficiency and lasting bacteria and mildew resistance when the rice paper is in contact with bacteria and mildew, and is prevented from being damaged by worm.
In a third aspect, the invention provides a preparation method of the rice paper in the second aspect, wherein the preparation method comprises the following steps:
the raw rice paper pulp is prepared by fishing paper, squeezing, baking and pasting and drying the paper in sequence, and chitosan acetic acid solution is added into the liquor obtained in the paper fishing process.
In the paper fishing process, the chitosan acetic acid solution is added into the paper fishing liquor and is uniformly mixed with the liquor to form viscous liquid, so that the functions of suspending fibers and controlling the water filtering speed of pulp can be achieved for paper pulp, and then the medicine is put and the paper is fished, so that the antibacterial and mildew-proof effects of the rice paper are achieved on the premise that the writing effect and the natural color of the rice paper are not affected, the antibacterial rate on large intestine and golden grape reaches more than 99%, the mildew-proof grade is 0, and the mothproof effect is achieved.
As a preferable technical scheme of the invention, the mass fraction of the chitosan acetic acid solution is 2 wt%.
In a preferred embodiment of the present invention, the chitosan acetic acid solution is 0.1 to 0.8 wt% of the total mass of the raw rice paper pulp, and may be, for example, 0.1 wt%, 0.2 wt%, 0.3 wt%, 0.4 wt%, 0.5 wt%, 0.6 wt%, 0.7 wt%, or 0.8 wt%, but is not limited to the above-mentioned values, and other values not listed in the above-mentioned value range are also applicable.
In the invention, if the addition amount of the chitosan acetic acid solution is less than 0.1 wt%, the antibacterial effect and antibacterial durability of the prepared rice paper can be influenced, and if the addition amount of the chitosan acetic acid solution is more than 0.8 wt%, the paper forming strength and uniformity of the rice paper can be influenced, so that the ink moistening performance is influenced, the chitosan has certain film forming property, and if the addition amount is too large, the air permeability of the rice paper can be reduced.
In a preferred embodiment of the present invention, the chitosan acetic acid solution is 0.1 to 0.5 wt% of the total mass of the rice paper raw stock, and may be, for example, 0.1 wt%, 0.2 wt%, 0.3 wt%, 0.4 wt%, or 0.5 wt%, but is not limited to the above-mentioned values, and other values not listed in the above-mentioned value range are also applicable.
The recitation of numerical ranges herein includes not only the above-recited numerical values, but also any numerical values between non-recited numerical ranges, and is not intended to be exhaustive or to limit the invention to the precise numerical values encompassed within the range for brevity and clarity.
The system refers to an equipment system, or a production equipment.
Compared with the prior art, the invention has the beneficial effects that:
(1) aiming at the problems that bacteria and sweat stains on hands can be brought to the rice paper when the current rice paper is in contact with limbs for a long time in the processes of writing, drawing and turning over, bacteria such as escherichia coli, staphylococcus aureus and mould are easy to breed, and the service life of the rice paper is influenced; moreover, the rice paper is greatly influenced by the environmental humidity, and is easy to damp and mildew particularly in the humid weather; the rice paper provided by the invention has the functions of resisting bacteria, preventing mildew and preventing worm damage, does not influence the writing effect and the natural color of the rice paper, is added during preparation, and has the effects of high efficiency and lasting bacteria and mildew resistance when the rice paper is in contact with bacteria and mildew, and is prevented from being damaged by worm.
(2) The original rice paper pulp is added with the wormwood, the aloe, the liquorice and the clove, so that the original rice paper pulp has the performances of antibiosis, mildew prevention, moth prevention and the like; in the paper fishing process, the chitosan acetic acid solution is added into the paper fishing liquor, and then the medicine is put and the paper is fished, so that the antibacterial and mildew-proof effects of the rice paper are realized on the premise of not influencing the writing effect and the natural color of the rice paper, the antibacterial rate to large intestine and golden grape reaches more than 99%, the mildew-proof grade is 0, and the insect-proof effect is achieved.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments.
Example 1
The embodiment provides a preparation method of antibacterial, mildewproof and mothproof rice paper, which specifically comprises the following steps:
(1) mixing and pulping the wingceltis bark fiber, the cornfield straw fiber, the wormwood, the aloe, the liquorice and the clove according to the following mass percentage to obtain raw rice paper pulp;
(2) and (2) preparing the rice paper through fishing paper, squeezing, baking and pasting and drying the rice paper raw pulp obtained in the step (1) in sequence, wherein a 2 wt% chitosan acetic acid solution is added into the liquor obtained through fishing paper in the paper fishing process, and the added chitosan acetic acid solution accounts for 0.8 wt% of the rice paper raw pulp.
The proportion of each component in the rice paper raw stock prepared in each example and the concentration and the addition amount of the chitosan acetic acid solution in the paper fishing liquor are summarized in table 1.
The prepared rice paper is subjected to antibacterial and mildewproof detection, and the detection result shows that: the rice paper prepared by the embodiment has the antibacterial rate of over 99 percent on escherichia coli and staphylococcus aureus, the mildew-proof grade is 0 grade, and the rice paper has the effect of preventing worm damage. The antibacterial rate, the mildew-proof grade and the data of whether the rice paper prepared by the embodiments has the insect-proof effect are summarized in the table 2.
Example 2
The embodiment provides a preparation method of antibacterial, mildewproof and mothproof rice paper, which specifically comprises the following steps:
(1) mixing and pulping the wingceltis bark fiber, the cornfield straw fiber, the wormwood, the aloe, the liquorice and the clove according to the following mass percentage to obtain raw rice paper pulp;
(2) and (2) preparing the rice paper through fishing paper, squeezing, baking and pasting and drying the rice paper raw pulp obtained in the step (1) in sequence, wherein a 2 wt% chitosan acetic acid solution is added into the liquor obtained through fishing paper in the paper fishing process, and the added chitosan acetic acid solution accounts for 0.6 wt% of the rice paper raw pulp.
The proportion of each component in the rice paper raw stock prepared in each example and the concentration and the addition amount of the chitosan acetic acid solution in the paper fishing liquor are summarized in table 1.
The prepared rice paper is subjected to antibacterial and mildewproof detection, and the detection result shows that: the rice paper prepared by the embodiment has the antibacterial rate of over 99 percent on escherichia coli and staphylococcus aureus, the mildew-proof grade is 0 grade, and the rice paper has the effect of preventing worm damage. The antibacterial rate, the mildew-proof grade and the data of whether the rice paper prepared by the embodiments has the insect-proof effect are summarized in the table 2.
Example 3
The embodiment provides a preparation method of antibacterial, mildewproof and mothproof rice paper, which specifically comprises the following steps:
(1) mixing and pulping the wingceltis bark fiber, the cornfield straw fiber, the wormwood, the aloe, the liquorice and the clove according to the following mass percentage to obtain raw rice paper pulp;
(2) and (2) preparing the rice paper through fishing paper, squeezing, baking and pasting and drying the rice paper raw pulp obtained in the step (1) in sequence, wherein a 2 wt% chitosan acetic acid solution is added into the liquor obtained through fishing paper in the paper fishing process, and the added chitosan acetic acid solution accounts for 0.5 wt% of the rice paper raw pulp.
The proportion of each component in the rice paper raw stock prepared in each example and the concentration and the addition amount of the chitosan acetic acid solution in the paper fishing liquor are summarized in table 1.
The prepared rice paper is subjected to antibacterial and mildewproof detection, and the detection result shows that: the rice paper prepared by the embodiment has the antibacterial rate of over 99 percent on escherichia coli and staphylococcus aureus, the mildew-proof grade is 0 grade, and the rice paper has the effect of preventing worm damage. The antibacterial rate, the mildew-proof grade and the data of whether the rice paper prepared by the embodiments has the insect-proof effect are summarized in the table 2.
Example 4
The embodiment provides a preparation method of antibacterial, mildewproof and mothproof rice paper, which specifically comprises the following steps:
(1) mixing and pulping the wingceltis bark fiber, the cornfield straw fiber, the wormwood, the aloe, the liquorice and the clove according to the following mass percentage to obtain raw rice paper pulp;
(2) and (2) preparing the rice paper through fishing paper, squeezing, baking and pasting and drying the rice paper raw pulp obtained in the step (1) in sequence, wherein a 2 wt% chitosan acetic acid solution is added into the liquor obtained through fishing paper in the paper fishing process, and the added chitosan acetic acid solution accounts for 0.3 wt% of the rice paper raw pulp.
The proportion of each component in the rice paper raw stock prepared in each example and the concentration and the addition amount of the chitosan acetic acid solution in the paper fishing liquor are summarized in table 1.
The prepared rice paper is subjected to antibacterial and mildewproof detection, and the detection result shows that: the rice paper prepared by the embodiment has the antibacterial rate of over 99 percent on escherichia coli and staphylococcus aureus, the mildew-proof grade is 0 grade, and the rice paper has the effect of preventing worm damage. The antibacterial rate, the mildew-proof grade and the data of whether the rice paper prepared by the embodiments has the insect-proof effect are summarized in the table 2.
Example 5
The embodiment provides a preparation method of antibacterial, mildewproof and mothproof rice paper, which specifically comprises the following steps:
(1) mixing and pulping the wingceltis bark fiber, the cornfield straw fiber, the wormwood, the aloe, the liquorice and the clove according to the following mass percentage to obtain raw rice paper pulp;
(2) and (2) preparing the rice paper through fishing paper, squeezing, baking and pasting and drying the rice paper raw pulp obtained in the step (1) in sequence, wherein a 2 wt% chitosan acetic acid solution is added into the liquor obtained through fishing paper in the paper fishing process, and the added chitosan acetic acid solution accounts for 0.1 wt% of the rice paper raw pulp.
The proportion of each component in the rice paper raw stock prepared in each example and the concentration and the addition amount of the chitosan acetic acid solution in the paper fishing liquor are summarized in table 1.
The prepared rice paper is subjected to antibacterial and mildewproof detection, and the detection result shows that: the rice paper prepared by the embodiment has the antibacterial rate of over 99 percent on escherichia coli and staphylococcus aureus, the mildew-proof grade is 0 grade, and the rice paper has the effect of preventing worm damage. The antibacterial rate, the mildew-proof grade and the data of whether the rice paper prepared by the embodiments has the insect-proof effect are summarized in the table 2.
Example 6
The embodiment provides a preparation method of antibacterial, mildewproof and mothproof rice paper, which specifically comprises the following steps:
(1) mixing and pulping the wingceltis bark fiber, the cornfield straw fiber, the wormwood, the aloe, the liquorice and the clove according to the following mass percentage to obtain raw rice paper pulp;
(2) and (2) preparing the rice paper through paper fishing, squeezing, baking and pasting and paper drying of the rice paper raw pulp obtained in the step (1), wherein a 2 wt% chitosan acetic acid solution is added into the paper fishing liquor in the paper fishing process, and the added chitosan acetic acid solution accounts for 0.1-0.8 wt% of the rice paper raw pulp.
The proportion of each component in the rice paper raw stock prepared in each example and the concentration and the addition amount of the chitosan acetic acid solution in the paper fishing liquor are summarized in table 1.
The prepared rice paper is subjected to antibacterial and mildewproof detection, and the detection result shows that: the rice paper prepared by the embodiment has the antibacterial rate of over 99 percent on escherichia coli and staphylococcus aureus, the mildew-proof grade is 0 grade, and the rice paper has the effect of preventing worm damage. The antibacterial rate, the mildew-proof grade and the data of whether the rice paper prepared by the embodiments has the insect-proof effect are summarized in the table 2.
Comparative example 1
Comparative example 1 differs from example 3 in that the wormwood was removed and the mass number of wormwood was proportioned to aloe, licorice and clove (ensuring the mass ratio of aloe, licorice and clove to 1:1:1), i.e. the mass percentages of the added wingceltis bark fiber and the added sakaya straw fiber were unchanged, the aloe was added at approximately 2.33 wt%, the licorice was added at approximately 2.33 wt%, and the clove was added at approximately 2.33 wt%, while ensuring that the sum of the mass percentages of the wingceltis bark fiber, the sakaya straw fiber, aloe, licorice and clove was 100%. The remaining procedure was exactly the same as in example 3.
The proportion of each component in the rice paper raw stock prepared according to each proportion and the concentration and the addition amount of the chitosan acetic acid solution in the paper fishing liquor are summarized in a table 1.
The prepared rice paper is subjected to antibacterial and mildewproof detection, and the detection result shows that: the rice paper prepared by the comparative example has the antibacterial rate of 98.8 percent to escherichia coli and staphylococcus aureus, the mildew-proof grade is 0 grade, and the rice paper does not have the insect-proof effect. The antibacterial rate, the mildew-proof grade and the data of whether the rice paper prepared according to various proportions has the insect-proof effect are summarized in a table 2.
Comparative example 2
Comparative example 1 differs from example 3 in that aloe was removed and the mass number of aloe was proportioned to wormwood, licorice and clove (ensuring 4:1:1 mass ratio of wormwood, licorice and clove), i.e. the mass percentages of wingceltis bark fiber and sand rice straw fiber added were unchanged, wormwood was added approximately 4.67 wt%, licorice was added approximately 1.17 wt%, clove was added approximately 1.17 wt%, while ensuring that the sum of the mass percentages of wingceltis bark fiber, sand rice straw fiber, wormwood, licorice and clove was 100%. The remaining procedure was exactly the same as in example 3.
The proportion of each component in the rice paper raw stock prepared according to each proportion and the concentration and the addition amount of the chitosan acetic acid solution in the paper fishing liquor are summarized in a table 1.
The prepared rice paper is subjected to antibacterial and mildewproof detection, and the detection result shows that: the rice paper prepared by the comparative example has the antibacterial rate of 98.2 percent to escherichia coli and staphylococcus aureus, the mildew-proof grade is grade 1, and the rice paper has the insect-proof effect. The antibacterial rate, the mildew-proof grade and the data of whether the rice paper prepared according to various proportions has the insect-proof effect are summarized in a table 2.
Comparative example 3
Comparative example 1 differs from example 3 in that liquorice was removed and the mass number of liquorice was divided into wormwood, aloe and clove in proportion (ensuring that the mass ratio of wormwood, aloe and clove was 4:1:1), i.e. the mass percentages of the added wingceltis bark fiber and sand straw fiber were unchanged, the weight percentage of wormwood was approximately 4.67 wt%, the weight percentage of aloe was approximately 1.17 wt%, and the weight percentage of clove was approximately 1.17 wt%, while ensuring that the sum of the mass percentages of wingceltis bark fiber, sand straw fiber, wormwood, aloe and clove was 100%. The remaining procedure was exactly the same as in example 3.
The proportion of each component in the rice paper raw stock prepared according to each proportion and the concentration and the addition amount of the chitosan acetic acid solution in the paper fishing liquor are summarized in a table 1.
The prepared rice paper is subjected to antibacterial and mildewproof detection, and the detection result shows that: the rice paper prepared by the comparative example has the antibacterial rate of 98.3 percent to escherichia coli and staphylococcus aureus, the mildew-proof grade of 0 grade and the insect-proof effect. The antibacterial rate, the mildew-proof grade and the data of whether the rice paper prepared according to various proportions has the insect-proof effect are summarized in a table 2.
Comparative example 4
Comparative example 1 differs from example 3 in that the clove was removed and the mass number of clove was divided into wormwood, aloe and licorice (ensuring the mass ratio of wormwood, aloe and licorice to be 4:1:1) in proportion, i.e. the mass percentages of the added wingceltis bark fiber and sand straw fiber were unchanged, the weight percentage of wormwood was approximately 4.67 wt%, the weight percentage of aloe was approximately 1.17 wt%, and the weight percentage of licorice was approximately 1.17 wt%, while ensuring that the sum of the mass percentages of wingceltis bark fiber, sand straw fiber, wormwood, aloe and licorice was 100%. The remaining procedure was exactly the same as in example 3.
The proportion of each component in the rice paper raw stock prepared according to each proportion and the concentration and the addition amount of the chitosan acetic acid solution in the paper fishing liquor are summarized in a table 1.
The prepared rice paper is subjected to antibacterial and mildewproof detection, and the detection result shows that: the rice paper prepared by the comparative example has the antibacterial rate of 98.6 percent on escherichia coli and staphylococcus aureus, the mildew-proof grade is 0 grade, and the rice paper has the insect-proof effect. The antibacterial rate, the mildew-proof grade and the data of whether the rice paper prepared according to various proportions has the insect-proof effect are summarized in a table 2.
Comparative example 5
This comparative example differs from example 3 in that: the chitosan acetic acid solution is not added into the paper fishing liquor in the paper fishing procedure, and other procedures are completely the same as the example 3.
The proportion of each component in the rice paper raw stock prepared according to each proportion and the concentration and the addition amount of the chitosan acetic acid solution in the paper fishing liquor are summarized in a table 1.
The prepared rice paper is subjected to antibacterial and mildewproof detection, and the detection result shows that: the rice paper prepared by the comparative example has the antibacterial rate of 97.1 percent on escherichia coli and staphylococcus aureus, the mildew-proof grade of 0 grade and the insect-proof effect. The antibacterial rate, the mildew-proof grade and the data of whether the rice paper prepared according to various proportions has the insect-proof effect are summarized in a table 2.
Comparative example 6
This comparative example differs from example 3 in that: in the paper fishing process, 2 wt% of chitosan acetic acid solution is added into the paper fishing liquor, and the added chitosan acetic acid solution accounts for 0.05 wt% of the rice paper raw stock. The other steps were exactly the same as in example 3.
The proportion of each component in the rice paper raw stock prepared according to each proportion and the concentration and the addition amount of the chitosan acetic acid solution in the paper fishing liquor are summarized in a table 1.
The prepared rice paper is subjected to antibacterial and mildewproof detection, and the detection result shows that: the rice paper prepared by the comparative example has the antibacterial rate of 97.4 percent to escherichia coli and staphylococcus aureus, the mildew-proof grade of 0 grade and the insect-proof effect. The antibacterial rate, the mildew-proof grade and the data of whether the rice paper prepared according to various proportions has the insect-proof effect are summarized in a table 2.
Comparative example 7
This comparative example differs from example 3 in that: in the paper fishing process, 2 wt% of chitosan acetic acid solution is added into the paper fishing liquor, and the added chitosan acetic acid solution accounts for 1 wt% of the rice paper raw stock. The other steps were exactly the same as in example 3.
The proportion of each component in the rice paper raw stock prepared according to each proportion and the concentration and the addition amount of the chitosan acetic acid solution in the paper fishing liquor are summarized in a table 1.
The prepared rice paper is subjected to antibacterial and mildewproof detection, and the detection result shows that: the rice paper prepared by the comparative example has the antibacterial rate of more than 99 percent on escherichia coli and staphylococcus aureus, the mildew-proof grade is 0 grade, and the rice paper has the insect-proof effect. The antibacterial rate, the mildew-proof grade and the data of whether the rice paper prepared according to various proportions has the insect-proof effect are summarized in a table 2.
TABLE 1
TABLE 2
| Antibacterial rate [% ]] | Mildew resistance rating | Whether or not to prevent moth-eating | |
| Example 1 | 99％ | Level 0 | Is that |
| Example 2 | 99％ | Level 0 | Is that |
| Example 3 | 99％ | Level 0 | Is that |
| Example 4 | 99％ | Level 0 | Is that |
| Example 5 | 99％ | Level 0 | Is that |
| Comparative example 1 | 98.8％ | Level 0 | Whether or not |
| Comparative example 2 | 98.2％ | Level 1 | Is that |
| Comparative example 3 | 98.3％ | Level 0 | Is that |
| Comparative example 4 | 98.6％ | Level 0 | Is that |
| Comparative example 5 | 97.1％ | Level 1 | Is that |
| Comparative example 6 | 97.4％ | Level 0 | Is that |
| Comparative example 7 | 99％ | Level 0 | Is that |
As can be seen from the data in Table 2, the rice paper prepared in comparative examples 1-4 has inferior antibacterial, mildewproof and mothproof effects compared with example 3, because the invention endows the rice paper with antibacterial, mildewproof and mothproof properties by adding wormwood, aloe, liquorice and clove to the rice paper raw stock. In addition, the wormwood, the aloe, the liquorice and the clove are all indispensable, because the wormwood has strong special smell and can play a role in expelling parasites, the aloe is a substance with strong antibacterial property and can kill fungi, moulds, bacteria, viruses and other germs and inhibit the development and propagation of pathogens, the liquorice contains flavonoid compounds and has a bactericidal effect, and the clove can inhibit the growth of bacteria and microorganisms. In addition, the chitosan acetic acid solution is added into the liquor for scooping up the paper, and then the liquor is put in the paper for scooping up the paper, so that the antibacterial and mildew-proof effects of the rice paper are realized on the premise of not influencing the writing effect and the natural color of the rice paper, the antibacterial rate to large intestine and golden grape reaches more than 99%, the mildew-proof grade is 0, and the insect-proof effect is achieved. More importantly, the invention particularly limits the addition amount of the chitosan acetic acid solution, and if the addition amount of the chitosan acetic acid solution is less than 0.1 wt%, the antibacterial effect and the antibacterial durability of the prepared rice paper can be influenced. It should be noted that the data of the antibacterial, mildewproof, and mothproof performances of comparative example 7 in table 2 are the same as those provided in the examples of the present invention, because increasing the addition amount of the chitosan acetic acid solution is helpful to provide the antibacterial performance of the rice paper, but if the addition amount of the chitosan acetic acid solution is higher than 0.8 wt%, the paper strength and uniformity of the rice paper are affected, the ink moistening performance is affected, the chitosan has a certain film forming property, and if the addition amount is too large, the air permeability of the rice paper is reduced, therefore, for the comparative example 7, the addition amount of the chitosan acetic acid solution is increased favorably from the viewpoint of the antibacterial and mildewproof performances, but from the viewpoint of the writing performance of the paper, the addition amount of the chitosan acetic acid solution is not too high, so the application especially limits the addition amount of the chitosan acetic acid solution to the range of 0.1 to 0.8 wt%.
The applicant states that the present invention is illustrated in detail by the above examples, but the present invention is not limited to the above detailed methods, i.e. it is not meant that the present invention must rely on the above detailed methods for its implementation. It should be understood by those skilled in the art that any modification of the present invention, equivalent substitutions of the raw materials of the product of the present invention, addition of auxiliary components, selection of specific modes, etc., are within the scope and disclosure of the present invention.
Claims (9)
1. The antibacterial, mildew-proof and moth-proof raw rice paper pulp is characterized by comprising wingceltis bark fibers, cornfield straw fibers, wormwood, aloe, liquorice and clove.
2. The rice paper raw stock as claimed in claim 1, wherein the raw stock comprises the following components in percentage by mass:
3. the rice paper raw stock as claimed in claim 1 or 2, wherein the raw stock comprises the following components in percentage by mass:
4. an antibacterial, mildew-proof and moth-proof rice paper, which is characterized in that the rice paper is prepared from the rice paper raw stock of any one of claims 1 to 3.
5. The rice paper as claimed in claim 4, wherein the antibacterial rate of the rice paper is more than 99%;
preferably, the rice paper has a mildew-proof grade of 0.
6. A method for preparing the rice paper as claimed in claim 4 or 5, wherein the method comprises the following steps:
the raw rice paper pulp is prepared by fishing paper, squeezing, baking and pasting and drying the paper in sequence, and chitosan acetic acid solution is added into the liquor obtained in the paper fishing process.
7. The method according to claim 6, wherein the chitosan acetic acid solution has a mass fraction of 2 wt%.
8. The preparation method of claim 6, wherein the chitosan acetic acid solution is 0.1-0.8 wt% of the total mass of the rice paper raw stock.
9. The preparation method of claim 8, wherein the chitosan acetic acid solution is 0.1-0.5 wt% of the total mass of the rice paper raw stock.
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| CN113073493A (en) * | 2021-03-12 | 2021-07-06 | 海南大学 | Papermaking method using rose stems as raw materials |
| CN114134750A (en) * | 2021-06-17 | 2022-03-04 | 常德集智生物科技有限公司 | Rice paper and preparation method thereof |
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