CN114150506A - Antibacterial antistatic PTT fiber wool-like double-faced woolen cloth and processing and finishing method thereof - Google Patents
Antibacterial antistatic PTT fiber wool-like double-faced woolen cloth and processing and finishing method thereof Download PDFInfo
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- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
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- D06M14/00—Graft polymerisation of monomers containing carbon-to-carbon unsaturated bonds on to fibres, threads, yarns, fabrics, or fibrous goods made from such materials
- D06M14/08—Graft polymerisation of monomers containing carbon-to-carbon unsaturated bonds on to fibres, threads, yarns, fabrics, or fibrous goods made from such materials on to materials of synthetic origin
- D06M14/12—Graft polymerisation of monomers containing carbon-to-carbon unsaturated bonds on to fibres, threads, yarns, fabrics, or fibrous goods made from such materials on to materials of synthetic origin of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
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- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
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- D06M13/328—Amines the amino group being bound to an acyclic or cycloaliphatic carbon atom
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Abstract
The invention discloses an antibacterial antistatic PTT fiber wool-like double-sided woolen cloth and a processing and finishing method thereof, wherein the processing and finishing method comprises the following steps: s1 pretreatment: hydrolyzing ester bonds on the surface of the wool-like double-faced woolen fiber to generate carboxyl, thereby obtaining standby wool-like double-faced woolen; s2 modification treatment: cleaning the spare wool-like double-faced woolen cloth, and grafting tyramine to obtain modified wool-like double-faced woolen cloth containing phenolic hydroxyl; s3 finishing: taking the modified wool-like double-faced woolen cloth, washing the woolen cloth, then carrying out free radical graft polymerization with a vinyl quaternary ammonium salt monomer under a catalytic system, thereby grafting polyethylene quaternary ammonium salt macromolecules on the surface of the polytrimethylene terephthalate fiber, washing and drying the woolen cloth. The invention does not need high temperature and strong alkali, has low treatment temperature, simple production steps and low production energy consumption, reduces the damage to the fiber, realizes the grafting of the vinyl quaternary ammonium salt molecules on the surface of the fiber, effectively improves the antistatic and antibacterial properties of the fiber, and increases the diffuse reflection light of the fabric, so that the fabric gloss is closer to that of a wool product.
Description
Technical Field
The invention relates to the technical field of textile dyeing and finishing, in particular to an antibacterial and antistatic PTT fiber wool-like double-faced woolen cloth and a processing and finishing method thereof.
Background
The double-faced woolen cloth is a woolen cloth product which is processed by taking wool as a raw material and has the same style in front and back. Compared with the common woolen fabric, the double-faced woolen cloth has the advantages of fine and soft texture, good heat retention property, super-strong elasticity, unique fulling property and wrinkle resistance, fine and smooth hand feeling, and is popular with consumers. The full-wool double-faced woolen cloth has high requirements on the quality of wool fiber raw materials, and is complex in weaving, dyeing and finishing, so that the production cost is high. In recent years, wool-like double-faced woolen cloth which is woven by adopting synthetic fibers (such as terylene, chinlon and acrylic fibers) as raw materials and adopting front and back same-face tissues and combines fiber modification and finishing processing is increasingly favored by consumers.
Polytrimethylene terephthalate (PTT) fibers are novel polyester fibers formed by polycondensation of terephthalic acid and propylene glycol, and have good elasticity and fluffiness, so the PTT fibers become a new favorite raw material for developing clothing fabrics including wool-like double-faced woollens in recent years. Compared with the common terylene, the PTT fiber is easy to dye at normal temperature, the processed wool-like double-sided wool fabric has soft and comfortable feeling, the hand feeling style is closer to that of cashmere, and the PTT fiber has the unique crease-resistant recovery performance of the terylene fiber.
However, the wool-like double-faced woolen cloth processed by PTT fiber has several defects in the prior art: 1) the gloss sense is not as soft as that of full-wool double-sided wool, mainly because the smooth round surface of the section of the PTT fiber has mirror light, and the surface scale of the wool is rough in appearance; 2) static accumulation is easy to generate, and mainly comes from the fact that the fiber belongs to polyester hydrophobic fiber; 3) the antibacterial performance is low, the reason is that the fibers adsorb dust after generating static electricity, the fabric structure is fluffy and is easy to become a place for bacterial breeding, and the defects of the three aspects restrict the improvement of the quality of the conventional PTT wool-like double-faced woolen product.
Aiming at the problems of the wool-like double-sided wool product, researchers adopt an alkaline method to process and modify fibers, namely, the wool-like double-sided wool fabric blank is subjected to caustic soda treatment, and the surface of the fibers is etched by hydrolyzing ester bonds in macromolecules of the fibers, so that the purposes of improving the surface roughness and increasing the hydrophilicity of the fibers are achieved. Practice shows that the wool-like double-faced woolen cloth finishing by the alkaline method has the defects of difficult control of the treatment process, easy damage to fibers, no improvement on antibacterial performance and the like.
Therefore, it is necessary to develop a new finishing method for wool-like double-faced woolen cloth.
Disclosure of Invention
The invention aims to provide an antibacterial and antistatic PTT fiber wool-like double-sided woolen cloth and a processing and finishing method thereof, and aims to solve the technical problems that in the prior art, the surface of the wool-like double-sided woolen cloth processed by PTT fibers is smooth and has mirror surface light, static accumulation is easy to generate, the antibacterial performance is low, the wool-like double-sided woolen cloth is finished by adopting an alkaline method, the surface roughness is improved, the fiber hydrophilicity is increased, the processing process is difficult to control, the fibers are easy to damage, the antibacterial performance is not improved, and the like.
In order to achieve the purpose, the technical scheme of the invention is as follows:
the invention provides a processing and finishing method of an antibacterial and antistatic PTT fiber wool-like double-sided woolen cloth, which comprises the following steps:
s1 pretreatment: taking the wool-like double-sided wool woven by the polytrimethylene terephthalate fiber as a raw material, and hydrolyzing ester bonds on the surface of the wool-like double-sided wool fiber to generate carboxyl to obtain standby wool-like double-sided wool containing the carboxyl;
s2 modification treatment: cleaning the standby wool-like double-faced woolen cloth prepared in the step S1, and grafting tyramine to obtain a modified wool-like double-faced woolen cloth containing phenolic hydroxyl groups;
s3 finishing: and (3) taking the modified wool-like double-faced woolen cloth prepared in S2, washing, carrying out free radical graft polymerization with a vinyl quaternary ammonium salt monomer under a catalytic system, grafting the vinyl quaternary ammonium salt monomer on the surface of the polytrimethylene terephthalate fiber, washing, and drying.
By adopting the scheme, the PTT fiber of the wool-like double-faced woolen cloth is hydrolyzed to generate carboxyl, then tyramine containing phenolic hydroxyl is grafted by utilizing the carboxyl, so that the surface of the PTT fiber contains the phenolic hydroxyl, the phenolic hydroxyl is polymerized with the vinyl quaternary ammonium salt monomer under a catalytic system, so that the polyethylene quaternary ammonium salt antibacterial film is formed on the surface of the fiber, meanwhile, the vinyl quaternary ammonium salt has a good antistatic effect, the roughness of the surface of the grafted fiber is increased, the diffuse reflected light is increased, and the deepening effect of the wool-like double-faced woolen cloth is generated.
On the basis of the technical scheme, the invention can be further improved as follows:
further, the S1 is specifically that the wool-like tweed is put into a hydrolysate containing polyester hydrolase for hydrolysis treatment, and the hydrolysate comprises the following components: 20-50U/mL of polyester hydrolase, 0.5-1.0 g/L of penetrant, 7.5-8.5 of pH of the hydrolysate, 40-50 ℃ of hydrolysis treatment temperature and 4-8 hours of treatment time.
By adopting the scheme, the ester bonds on the surface of the PTT fibers are hydrolyzed by utilizing the polyester hydrolase, so that the energy consumption is low, the treatment temperature is low, the use of high temperature and strong alkali treatment is avoided, and the damage to the fibers is small.
Further, the polyester hydrolase is one or two of lipase and cutinase.
Further, the S2 is specifically that the ready-to-use wool-like double faced woolen cloth prepared in the S1 is put into a modification treatment liquid containing tyramine for modification treatment, and the modification treatment liquid comprises the following components: 2-5 g/L of 1-ethyl-3- (3-dimethylaminopropyl) -carbodiimide, 2-5 g/L of N-hydroxysuccinimide, 5-10 g/L of tyramine, and the pH value of the modification treatment liquid is 5.5-6.5.
By adopting the scheme, the tyramine is grafted on the surface of the fiber by utilizing 1-ethyl-3- (3-dimethylaminopropyl) -carbodiimide and N-hydroxysuccinimide.
Further, the temperature of the modification treatment is 25-40 ℃, and the treatment time is 8-12 hours.
Further, the step S3 is to put the modified wool-like double-faced woolen cloth prepared in the step S2 into finishing liquid for finishing, wherein the finishing liquid comprises the following components: 10-25 g/L of vinyl quaternary ammonium salt, 0.5-1.5 g/L of N, N-methylene bisacrylamide, 5-10 g/L of ferrous chloride and 1.5-3 g/L of hydrogen peroxide, wherein the pH value of the finishing liquid is 3.5-5, and the finishing liquid is cleaned and dried after finishing treatment.
By adopting the scheme, the Fenton system consisting of hydrogen peroxide and ferrous chloride can catalyze and oxidize tyramine to generate phenolic oxygen free radicals, so that the phenolic oxygen free radicals react with vinyl quaternary ammonium free radicals to initiate vinyl quaternary ammonium free radical polymerization, and a polyethylene quaternary ammonium antibacterial film is formed on the surface of the fiber.
Further, the treatment temperature of the finishing treatment is 30-40 ℃, and the treatment time is 3-6 hours.
Further, the vinyl quaternary ammonium salt comprises one or more of dimethyl diallyl ammonium chloride, (3-acrylamidopropyl) trimethyl ammonium chloride, methacryloyloxyethyl trimethyl ammonium chloride, acryloyloxyethyl trimethyl ammonium chloride and allyl trimethyl ammonium chloride.
Further, the wool-like double-faced woolen cloth is a fabric which is woven by using 240-300 denier polytrimethylene terephthalate fiber as a raw material and adopting two upper twill weave structures and two lower twill weave structures.
The second aspect of the invention provides the antibacterial and antistatic PTT fiber wool-like double-faced woolen cloth prepared by the processing and finishing method of the first aspect of the invention.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the wool-like double-faced woolen cloth, ester bonds on the surface of PTT fibers are hydrolyzed to generate carboxyl, the carboxyl and tyramine containing phenolic hydroxyl are subjected to graft polymerization, so that phenolic hydroxyl is grafted on the surface of the fibers, the surface of the PTT fibers contains phenolic hydroxyl, the phenolic hydroxyl is subjected to polymerization with a vinyl quaternary ammonium salt monomer under a catalytic system, a polyethylene quaternary ammonium salt molecular film is formed on the surface of the fibers, and both the polyethylene quaternary ammonium salt molecules and the hydroxyl generated by hydrolysis of the ester bonds have an antistatic effect, so that the wool-like double-faced woolen cloth has excellent antistatic performance, and the induction voltage is reduced by 40% -60% compared with an untreated sample;
2. the surface of the wool-like double-faced woolen fiber is grafted and polymerized with the vinyl quaternary ammonium salt monomer, and the polyethylene quaternary ammonium salt molecular film is formed on the surface of the fiber, so that the fiber is endowed with excellent antibacterial performance, and the antibacterial rate of escherichia coli is over 95 percent;
3. the wool-like double-faced woolen cloth avoids high-temperature and strong alkali treatment in the processing and finishing process, has small damage to fibers, and simultaneously, the polyethylene quaternary ammonium salt molecules subjected to graft polymerization are also beneficial to improving the fiber strength, so that the fiber strength of the wool-like double-faced woolen cloth is increased relative to an untreated sample, and the change rate of the breaking strength reaches + 1.5- + 2.4;
4. according to the wool-like double-faced woolen cloth, the fiber surface is etched after polyester fibers are hydrolyzed, the fiber surface roughness is further increased after polyethylene quaternary ammonium salt is deposited, the fabric diffuse reflection light is increased, the dyeing depth K/S of a sample is improved, and the appearance gloss of the wool-like double-faced woolen cloth is closer to that of a wool product;
5. the processing and finishing method of the invention does not need high temperature and strong alkali, has low treatment temperature, simple production steps and low production energy consumption, reduces the damage to the fiber, and realizes the grafting of the vinyl quaternary ammonium salt molecules on the surface of the fiber by sequentially adopting the steps of pretreatment, modification treatment and finishing treatment, thereby effectively improving the antistatic and antibacterial properties of the fiber, and increasing the diffuse reflection light of the fabric, so that the fabric gloss is closer to that of a wool product.
Detailed Description
The following describes embodiments of the present invention in detail. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the invention pertains.
The first embodiment is as follows:
the embodiment provides an antibacterial antistatic PTT fiber wool-like double-faced woolen cloth which is processed and finished by the following method:
s1 pretreatment: taking a plain-color wool-like double-faced woolen cloth woven by 240-denier polytrimethylene terephthalate fiber as a raw material, and putting the wool-like double-faced woolen cloth into a hydrolysis solution containing lipase for hydrolysis treatment, wherein the hydrolysis solution comprises the following components: 20U/mL of lipase, 0.5g/L of penetrant, pH of hydrolysate of 7.5, hydrolysis treatment temperature of 40 ℃, and treatment time of 4 hours to obtain the standby wool-like double-faced woolen cloth containing carboxyl;
s2 modification treatment: cleaning the spare wool-like double-faced woolen cloth prepared in the step S1, and then putting the washed wool-like double-faced woolen cloth into a modification treatment liquid containing tyramine for modification treatment, wherein the modification treatment liquid comprises the following components: 2g/L of 1-ethyl-3- (3-dimethylaminopropyl) -carbodiimide, 2g/L of N-hydroxysuccinimide, 5g/L of tyramine, 5.5 of pH of modification treatment liquid, 25 ℃ of modification treatment temperature and 8 hours of treatment time to obtain the modified wool-like double-faced woolen cloth containing phenolic hydroxyl;
s3 finishing: cleaning the modified wool-like double-faced woolen cloth prepared in the step S2, and putting the wool-like double-faced woolen cloth into finishing liquid for finishing treatment, wherein the finishing liquid comprises the following components: 10g/L of dimethyl diallyl ammonium chloride, 0.5g/L of N, N-methylene bisacrylamide, 5g/L of ferrous chloride, 1.5g/L of hydrogen peroxide, 3.5 of pH of finishing liquid, 30 ℃ of finishing treatment temperature and 3 hours of treatment time, and cleaning and drying to obtain the finishing agent.
Example two:
the embodiment provides an antibacterial antistatic PTT fiber wool-like double-faced woolen cloth which is processed and finished by the following method:
s1 pretreatment: taking the mixed-color wool-like double-sided wool woven by 280-denier polytrimethylene terephthalate fiber as a raw material, and putting the wool-like double-sided wool into a hydrolysis solution containing cutinase for hydrolysis treatment, wherein the hydrolysis solution comprises the following components: cutinase 50U/mL, penetrant 1.0g/L, hydrolysate pH of 8.5, hydrolysis temperature of 50 ℃, and treatment time of 8 hours to obtain the standby wool-like double-faced woolen cloth containing carboxyl;
s2 modification treatment: cleaning the spare wool-like double-faced woolen cloth prepared in the step S1, and then putting the washed wool-like double-faced woolen cloth into a modification treatment liquid containing tyramine for modification treatment, wherein the modification treatment liquid comprises the following components: 5g/L of 1-ethyl-3- (3-dimethylaminopropyl) -carbodiimide, 5g/L of N-hydroxysuccinimide, 10g/L of tyramine, pH of modification treatment liquid being 6, the temperature of modification treatment being 40 ℃, and the treatment time being 12 hours, so as to obtain the modified wool-like double-faced woolen cloth containing phenolic hydroxyl;
s3 finishing: cleaning the modified wool-like double-faced woolen cloth prepared in the step S2, and putting the wool-like double-faced woolen cloth into finishing liquid for finishing treatment, wherein the finishing liquid comprises the following components: 25g/L of acryloyloxyethyl trimethyl ammonium chloride, 1.5g/L of N, N-methylene bisacrylamide, 10g/L of ferrous chloride, 3g/L of hydrogen peroxide, 5 of pH of finishing liquid, 40 ℃ of treatment temperature of finishing treatment and 6 hours of treatment time, and the finishing agent is obtained after cleaning and drying.
Comparative example one:
the same 240 denier polytrimethylene terephthalate fiber plain-color wool-like tweed as in example one was used as comparative example one.
Comparative example two:
the wool-like double-faced woolen cloth of the comparative example is processed and finished by the following method:
s1, taking a plain-color wool-like double-faced woolen cloth woven by 240-denier polytrimethylene terephthalate fibers as a raw material, cleaning the wool-like double-faced woolen cloth, and then putting the wool-like double-faced woolen cloth into a modification treatment liquid containing tyramine for modification treatment, wherein the modification treatment liquid comprises the following components: 2g/L of 1-ethyl-3- (3-dimethylaminopropyl) -carbodiimide, 2g/L of N-hydroxysuccinimide, 5g/L of tyramine, 5.5 of pH of modification treatment liquid, 25 ℃ of modification treatment temperature and 8 hours of treatment time;
s2, cleaning the wool-like double-faced woolen cloth subjected to the S1 treatment, and putting the wool-like double-faced woolen cloth into finishing liquid for finishing treatment, wherein the finishing liquid comprises the following components: 10g/L of dimethyl diallyl ammonium chloride, 0.5g/L of N, N-methylene bisacrylamide, 5g/L of ferrous chloride, 1.5g/L of hydrogen peroxide, 3.5 of pH of finishing liquid, 30 ℃ of finishing treatment temperature and 3 hours of treatment time, and cleaning and drying to obtain the finishing agent.
Comparative example three:
the wool-like double-faced woolen cloth of the comparative example is processed and finished by the following method:
s1 takes a plain-color wool-like double-faced woolen cloth woven by 240-denier polytrimethylene terephthalate fiber as a raw material, and the wool-like double-faced woolen cloth is put into a hydrolysis solution containing lipase for hydrolysis treatment, wherein the hydrolysis solution comprises the following components: 20U/mL of lipase, 0.5g/L of penetrant, pH of hydrolysate of 7.5, hydrolysis treatment temperature of 40 ℃, and treatment time of 4 hours to obtain the standby wool-like double-faced woolen cloth containing carboxyl;
s2 finishing: cleaning the standby wool-like double-faced woolen cloth prepared in the step S2, and putting the washed standby wool-like double-faced woolen cloth into finishing liquid for finishing treatment, wherein the finishing liquid comprises the following components: 10g/L of dimethyl diallyl ammonium chloride, 0.5g/L of N, N-methylene bisacrylamide, 5g/L of ferrous chloride, 1.5g/L of hydrogen peroxide, 3.5 of pH of finishing liquid, 30 ℃ of finishing treatment temperature and 3 hours of treatment time, and cleaning and drying to obtain the finishing agent.
Comparative example four:
the wool-like double-faced woolen cloth of the comparative example is processed and finished by the following method:
s1 the plain-color wool-like double-faced woolen cloth woven by 240-denier polytrimethylene terephthalate fiber is taken as a raw material, washed and put into finishing liquid for finishing treatment, and the finishing liquid comprises the following components: 10g/L of dimethyl diallyl ammonium chloride, 0.5g/L of N, N-methylene bisacrylamide, 5g/L of ferrous chloride, 1.5g/L of hydrogen peroxide, 3.5 of pH of finishing liquid, 30 ℃ of finishing treatment temperature and 3 hours of treatment time, and cleaning and drying to obtain the finishing agent.
Comparative example five:
the same 280-denier polytrimethylene terephthalate fiber-woven color-blended wool-like tweed as the example five was used as a comparative example.
Comparative example six:
the wool-like double-faced woolen cloth of the comparative example is processed and finished by the following method:
s1 the blended color wool-like double-faced woolen cloth knitted by 280-denier polytrimethylene terephthalate fiber is taken as a raw material, washed and put into a modification treatment liquid containing tyramine for modification treatment, and the modification treatment liquid comprises the following components: 5g/L of 1-ethyl-3- (3-dimethylaminopropyl) -carbodiimide, 5g/L of N-hydroxysuccinimide, 10g/L of tyramine, pH of a modification treatment liquid of 6, the temperature of modification treatment of 40 ℃, and the treatment time of 12 hours;
s2, cleaning the wool-like double-faced woolen cloth subjected to the S1 treatment, and putting the wool-like double-faced woolen cloth into finishing liquid for finishing treatment, wherein the finishing liquid comprises the following components: 25g/L of acryloyloxyethyl trimethyl ammonium chloride, 1.5g/L of N, N-methylene bisacrylamide, 10g/L of ferrous chloride, 3g/L of hydrogen peroxide, 5 of pH of finishing liquid, 40 ℃ of treatment temperature of finishing treatment and 6 hours of treatment time, and the finishing agent is obtained after cleaning and drying.
Comparative example seven:
the wool-like double-faced woolen cloth of the comparative example is processed and finished by the following method:
s1 the color-mixed wool-like double-faced woolen cloth knitted by 280-denier polytrimethylene terephthalate fiber is taken as a raw material, and the wool-like double-faced woolen cloth is put into a hydrolysis solution containing cutinase for hydrolysis treatment, wherein the hydrolysis solution comprises the following components: cutinase 50U/mL, penetrant 1.0g/L, hydrolysate pH of 8.5, hydrolysis temperature of 50 ℃, and treatment time of 8 hours to obtain the standby wool-like double-faced woolen cloth containing carboxyl;
s1, cleaning the spare wool-like double-faced woolen cloth prepared in the step S1, and putting the washed cloth into finishing liquid for finishing, wherein the finishing liquid comprises the following components: 25g/L of acryloyloxyethyl trimethyl ammonium chloride, 1.5g/L of N, N-methylene bisacrylamide, 10g/L of ferrous chloride, 3g/L of hydrogen peroxide, 5 of pH of finishing liquid, 40 ℃ of treatment temperature of finishing treatment and 6 hours of treatment time, and the finishing agent is obtained after cleaning and drying.
Comparative example eight:
the wool-like double-faced woolen cloth of the comparative example is processed and finished by the following method:
s1 the mixed-color wool-like double-faced woolen cloth woven by 280-denier polytrimethylene terephthalate fiber is taken as a raw material, washed and put into finishing liquid for finishing treatment, and the finishing liquid comprises the following components: 25g/L of acryloyloxyethyl trimethyl ammonium chloride, 1.5g/L of N, N-methylene bisacrylamide, 10g/L of ferrous chloride, 3g/L of hydrogen peroxide, 5 of pH of finishing liquid, 40 ℃ of treatment temperature of finishing treatment and 6 hours of treatment time, and the finishing agent is obtained after cleaning and drying.
The first effect example is as follows:
the bacteriostasis rate of the wool-like double-faced woolen cloth of the first example, the second example and the first to the eighth comparative examples on escherichia coli is determined by referring to GB/T20944.3-2008, and the following data are obtained:
from the above table, it can be seen that:
the wool-like double-faced woolen cloth in the first embodiment and the second embodiment has high bacteriostasis rate which is more than 95 percent, and the reason is that the surfaces of the fibers are grafted with polyethylene quaternary ammonium salt macromolecules to form a polyethylene quaternary ammonium salt antibacterial film;
the samples which are not treated have no bacteriostatic effect in the first and fifth comparative examples;
the samples which are not pretreated have unsatisfactory bacteriostatic effects, and the reason is that because ester bonds on the surface of PTT fibers are not hydrolyzed to form carboxyl groups, tyramine containing phenolic hydroxyl groups cannot be grafted on the surface of the fibers, so that polyethylene quaternary ammonium salt graft polymerization does not occur, namely only a small amount of vinyl quaternary ammonium salt self-polymerization is adsorbed on the surface of the fibers;
the third and seventh samples which are not grafted with tyramine have insignificant antibacterial effects because phenolic hydroxyl groups cannot be introduced into the fiber surface, so that graft polymerization of polyethylene quaternary ammonium salt does not occur, and because tyramine is not adsorbed on the fiber surface because the modification treatment liquid containing tyramine is not used, the adsorption amount of vinyl quaternary ammonium salt is smaller than that of the second and sixth samples, so that the antibacterial rate is lower;
the fourth and eighth bacteriostatic rates were lower for the samples that were not pretreated and grafted with tyramine due to the lack of graft polymerized polyethylene quaternary ammonium salt macromolecules on the fiber surface.
Effect example two:
the induction voltage and half-life of the wool-like double-faced woolen samples of the first example, the second example and the first to the eighth comparative examples are determined by referring to GB/T12703.1-2008, the smaller the induction voltage and half-life values are, the better the antistatic property is, and conversely, the poorer the antistatic property is, and the data shown in the following table are obtained:
from the above table, it can be seen that:
the wool-like double-sided wool fabric in the first embodiment and the second embodiment has lower induced voltage and shorter half life, compared with the untreated comparative example I and the untreated comparative example V, the induced voltage is respectively reduced by 40% and 60%, the half life is greatly reduced, and the antistatic effect is better, because the surface of the fiber is grafted to form polyethylene quaternary ammonium salt macromolecules, and the polyethylene quaternary ammonium salt has good antistatic performance, so that the antistatic performance is improved.
The samples of comparative example one and comparative example five, which were not subjected to any treatment, were inferior in antistatic properties.
The samples of comparative example two and comparative example six, which were not pretreated, had poor antistatic properties because tyramine containing phenolic hydroxyl groups could not be grafted on the fiber surface because ester bonds on the surface of PTT fibers were not hydrolyzed to form carboxyl groups, resulting in no graft polymerization of polyethylene quaternary ammonium salt, i.e., only a small amount of vinyl quaternary ammonium salt self-assembly polymer was adsorbed on the fiber surface;
the third and seventh samples which were not treated with the grafted tyramine had poor antistatic properties because phenolic hydroxyl groups were not introduced to the fiber surface, resulting in no graft polymerization of the polyethylene quaternary ammonium salt; in addition, the wettability of the sample is improved after the treatment of the polyester hydrolytic enzyme, the surface roughness of the fiber is increased, so the antistatic effect of the sample is improved compared with the untreated sample,
comparative example four and comparative example eight, which had not been pretreated and grafted with tyramine, had poor antistatic properties due to the lack of graft polymerized polyethylene quaternary ammonium salt macromolecules on the fiber surface.
Effect example three:
the breaking strength of the wool-like double-faced woolen samples of the first example, the second example and the comparative examples 1 to eight is measured by referring to GB/T3923.1-2013, the strength change rate relative to an untreated sample is calculated, and the following data are obtained:
from the above table, it can be seen that:
the breaking strength of the samples of example one and example two increased to 1.5% and 2.4% respectively relative to the untreated sample due to the grafting of the fiber surface to form the polyethylene quaternary ammonium salt macromolecules and the formation of the polyethylene quaternary ammonium salt molecular film.
The breaking strength of the samples of comparative examples two and six was slightly increased relative to the untreated sample due to the small amount of the vinyl quaternary ammonium salt self-assembly adsorbed on the fiber surface of the sample.
The breaking strength of the samples of comparative example three and comparative example seven was reduced due to the reduced fabric strength caused by the polyester hydrolytic enzyme treatment, and the molecular film of the polyethylene quaternary ammonium salt formed on the surface of the fiber of example one and example two remedied this defect.
The breaking strength of the samples of comparative example four and comparative example eight was slightly increased relative to the untreated sample, again because of the small amount of vinyl quaternary ammonium salt homopolymer adsorbed on the fiber surface.
The fourth effect example:
the K/S values of the dyeing depths (color measurement conditions: D65 illuminant, 10 ℃ visual field) of the samples of example one, example two and comparative examples 1 to 8 were determined using a color meter, giving the data of the following table:
from the above table, it can be seen that:
the dyeing depth K/S of the samples of examples one and two was slightly increased compared to the original samples because the fiber surface was etched after the polyester hydrolytic enzyme treatment, the fiber surface roughness was further increased after the deposition of the polyethylene quaternary ammonium salt, and the diffuse reflection light of the fabric was increased.
The dyeing depth K/S of the samples of comparative example two and comparative example four were also slightly higher than that of the untreated sample, respectively, because a small amount of the vinyl quaternary ammonium salt self-assembly substance adsorbed on the fiber surface of the sample, increasing the fiber surface roughness.
The dyeing depth K/S of the samples of comparative example three and comparative example seven were also slightly higher than that of the untreated sample, respectively, because the fiber surface was etched after the polyester hydrolytic enzyme treatment, and a small amount of the vinyl quaternary ammonium salt self-assembly substance was adsorbed on the fiber surface, increasing the fiber surface roughness.
The dyeing depth K/S of the samples of comparative example four and comparative example was at the same level as that of the untreated sample due to the lack of graft polymerized polyethylene quaternary ammonium salt macromolecules on the surface.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.
Claims (10)
1. The processing and finishing method of the antibacterial and antistatic PTT fiber wool-like double-sided wool is characterized by comprising the following steps:
s1 pretreatment: taking the wool-like double-sided wool woven by the polytrimethylene terephthalate fiber as a raw material, and hydrolyzing ester bonds on the surface of the wool-like double-sided wool fiber to generate carboxyl to obtain standby wool-like double-sided wool containing the carboxyl;
s2 modification treatment: cleaning the standby wool-like double-faced woolen cloth prepared in the step S1, and grafting tyramine to obtain a modified wool-like double-faced woolen cloth containing phenolic hydroxyl groups;
s3 finishing: and (3) taking the modified wool-like double-faced woolen cloth prepared in S2, washing, performing free radical graft polymerization with a vinyl quaternary ammonium salt monomer under a catalytic system, grafting polyethylene quaternary ammonium salt macromolecules on the surface of the polytrimethylene terephthalate fiber, washing, and drying.
2. The process finishing method according to claim 1, wherein S1 is implemented by placing the wool-like tweed into a hydrolysis solution containing polyester hydrolase, wherein the hydrolysis solution comprises the following components: 20-50U/mL of polyester hydrolase, 0.5-1.0 g/L of penetrant, 7.5-8.5 of pH of the hydrolysate, 40-50 ℃ of hydrolysis treatment temperature and 4-8 hours of treatment time.
3. The process finishing method of claim 2, wherein the polyester hydrolyzing enzyme is one or a combination of both of lipase and cutinase.
4. The processing and finishing method according to claim 1, wherein S2 is implemented by washing the ready-to-use wool-like tweed prepared in S1, and then modifying the ready-to-use wool-like tweed in a modifying treatment solution containing tyramine, wherein the modifying treatment solution comprises the following components: 2-5 g/L of 1-ethyl-3- (3-dimethylaminopropyl) -carbodiimide, 2-5 g/L of N-hydroxysuccinimide, 5-10 g/L of tyramine, and the pH value of the modification treatment liquid is 5.5-6.5.
5. The processing and finishing method according to claim 4, wherein the temperature of the modification treatment is 25-40 ℃ and the treatment time is 8-12 hours.
6. The processing and finishing method according to claim 1, wherein S3 is specifically that the modified wool-like tweed prepared in S2 is washed and then put into a finishing liquid for finishing treatment, and the finishing liquid comprises the following components: 10-25 g/L of vinyl quaternary ammonium salt, 0.5-1.5 g/L of N, N-methylene bisacrylamide, 5-10 g/L of ferrous chloride and 1.5-3 g/L of hydrogen peroxide, wherein the pH value of the finishing liquid is 3.5-5, and the finishing liquid is cleaned and dried after finishing treatment.
7. The process finishing method according to claim 6, wherein the finishing treatment is carried out at a temperature of 30 to 40 ℃ for 3 to 6 hours.
8. The process finishing method of any one of claims 1 to 7, wherein the quaternary vinyl ammonium salt comprises one or more combinations of dimethyldiallylammonium chloride, (3-acrylamidopropyl) trimethylammonium chloride, methacryloyloxyethyltrimethylammonium chloride, acryloyloxyethyltrimethylammonium chloride, and allyltrimethylammonium chloride.
9. The processing and finishing method as claimed in any one of claims 1 to 7, wherein the wool-like tweed is a fabric woven by two upper, two lower twill weave fabrics using 240-denier and 300-denier polytrimethylene terephthalate fiber as raw material.
10. An antibacterial antistatic PTT fiber wool-like double-faced woolen cloth prepared by the processing and finishing method of any one of claims 1 to 9.
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