JP5972582B2 - Functional polyester fabric and method for producing the same - Google Patents

Description

  The present invention relates to a functional polyester fabric, and more particularly to a functional polyester fabric obtained by fixing α- or β-cyclodextrin to a fabric made of polyester fiber and a method for producing the same.

  Cyclodextrin is a natural cyclic molecule derived from potato starch or corn starch, such as α-cyclodextrin with 6 glucoses, β-cyclodextrin with 7 glucoses, and γ-cyclodextrin with 8 glucoses It has been known. These cyclodextrins have different properties depending on the number of glucose components. For example, the β-isomer has the lowest solubility in water and the γ-isomer has the highest solubility, and the β-isomer has a water solubility at 25 ° C. that is approximately 13 times that of the β-isomer (23.2 g / 1.8 g).

  Since cyclodextrin has a hydroxyl group outside the cyclic structure, the inside is hydrophobic, and it is easy to include a hydrophobic substance. Therefore, cyclodextrin is used in various applications.

  In addition, substances unstable to the external environment such as heat and ultraviolet rays can be stabilized by inclusion in cyclodextrin.

  In recent years, attempts have been made to fabricate a fabric having functions such as deodorization, antibacterial activity, and scenting by fixing the cyclodextrin to the fabric by making use of the excellent inclusion effect of cyclodextrin.

  However, a fabric made of natural fibers has functional groups such as hydroxyl groups and amino groups in the natural fibers constituting the fabric, so that it is easy to fix cyclodextrin to the fabric. It is not easy to fix cyclodextrin.

  This is the same reason that natural fibers are easily dyed but polyester fibers are not easily dyed.

  For example, Patent Document 1 discloses a method in which a nylon thread is immersed in an aqueous solution in which an ascorbic acid derivative is included in cyclodextrin and emulsified and dispersed with a surfactant, and dried to fix the cyclodextrin inclusion body to the nylon thread. Is described.

  Patent Document 2 discloses that α-cyclodextrin or a cloth obtained by polymerizing an aqueous polyisocyanate compound and an inclusion body of α-cyclodextrin or a inclusion complex of γ-cyclodextrin on the surface of a polyester fiber cloth is used. A method for fixing γ-cyclodextrin is described.

  Further, Patent Document 3 discloses a solution in a water-miscible organic solvent containing β-cyclodextrin substituted with a monochlorotriazinyl group and a solubilizing agent ε-caprolactam, cotton, viscose, cotton / polyester ( 50/50) Each fabric of a blend is impregnated and dried.

JP 2004-052138 A JP 2009-13547 A JP 2005-533190 A

  However, in the method of Patent Document 1, a surfactant is essential, but considering the persistence and environmental impact when used in a fabric, its use is not preferred, and the use of cyclodextrin on the fabric is not preferred. There is a problem that the fixing force is not so strong.

  Moreover, since the polyester fabric fixed with α-cyclodextrin or γ-cyclodextrin obtained by the method of Patent Document 2 uses an isocyanate compound and a glyoxal resin, there is a problem that the texture of the material changes.

Furthermore fabric obtained in Patent Document 3 methods are those that either covalent attachment of the reactive cyclodextrin such as a hydroxyl group or nitrogen with natural fibers or semi-natural fibers, having no functional group polyester Le textiles ( In the following, there is a problem that cyclodextrin does not bind to the fabric of the polyester fiber) .

  Polyester fiber fabrics have functions similar to cotton, but have excellent wear resistance, durability, and elasticity, so they do not wrinkle easily, do not lose shape, have heat resistance, and are extremely durable. It has high quick-drying properties and is widely used for clothing. However, since the polyester fiber constituting the fabric does not have a functional group such as natural fiber, particularly a hydroxyl group, cyclodextrin cannot be fixed to the polyester fiber fabric.

  As a result of diligent research, the present inventors fixed the reactive cyclodextrin to the fabric by a very simple method of holding a reactive cyclodextrin in a polyester fiber fabric and heating it at a high temperature. The present invention has been completed.

  That is, the object of the present invention is to have a function of deodorizing, antibacterial, scenting, and the like by firmly fixing cyclodextrin to a polyester fiber fabric having excellent characteristics, and having excellent durability and durability. It is intended to provide clothing, a textile product for nursing care, and the like made of a polyester fiber fabric that is light and quick-drying.

The present invention includes a fabric polyester Le textiles,
A functional polyester fabric comprising a condensate in which a hydrophobic portion of the fabric surface and a hydrophobic portion of a reactive cyclodextrin are fixed, and the reactive cyclodextrins are also condensed with each other .

In the functional polyester fabric of the present invention, the reactive cyclodextrin is monochlorotriazinyl-β-cyclodextrin.
The functional polyester fabric of the present invention has a deodorizing function.

The present invention, the fabric of polyester Le textiles, a step holding for holding the reactive cyclodextrin with a basic substance,
A heat treatment step of condensing the reactive cyclodextrin and fixing the condensate of the reactive cyclodextrin to the fabric by heat-treating the fabric holding the reactive cyclodextrin at 130 to 200 ° C . ; It is a manufacturing method of the functional polyester fabric characterized by including this.

Moreover, in the manufacturing method of the functional polyester fabric of this invention, in the said heat processing process, the said heat processing is 0 . It is performed under conditions of 5 minutes or more.

According to the present invention, the functional polyester fabric, polyester Le textiles and fabric (hereinafter, sometimes referred to polyester fiber), and a hydrophobic portion of the reactive cyclodextrin with the hydrophobic portion of the fabric surface sticking It is, and also reactive cyclodextrin together and a condensate condensed. In such a functional polyester cloth, a condensate of reactive cyclodextrin having various functions based on the inclusion action of cyclodextrin such as deodorizing action, antibacterial action and sustained release action is added to the polyester fiber cloth. A functional polyester that takes advantage of the advantages of polyester fabric because of its excellent texture, wear resistance, durability, resistance to wrinkles, resistance to deformation, resistance to heat, and extremely strong. There exists an effect that a fabric is obtained.

Moreover, according to this invention, the manufacturing method of a functional polyester fabric includes a holding process and a heat treatment process. In the holding step, the fabric of polyester Le textiles, by holding the reactive cyclodextrin with a basic substance, in the heat treatment step, by heating at 130 to 200 ° C., the condensate of the reactive cyclodextrin Since the hydrophobic portion is fixed to the hydrophobic portion of the fabric surface , an excellent functional polyester fabric can be obtained by a simple treatment, and components such as a binder and a crosslinking agent are not required only by heat treatment. Also, the polyester fabric can be produced without damaging the advantages.

  In the present invention, it is not clear how the condensate of the reactive cyclodextrin and the polyester fabric are bonded, and the condensate and the fabric are fixed.

  However, at least the reactive cyclodextrin is heated at a high temperature in a state of being held on the polyester fabric, whereby the monochlorotriazino group reacts with the hydroxyl group of other cyclodextrin to form a covalent bond, and the polyester fabric is strongly bonded. The hydrophobic part of the condensate that is entangled and fixed (the cyclodextrin has high hydrophilicity, so the reactive group seems to be hydrophobic) shows affinity with the polyester, Predicted to be firmly fixed and bonded.

It is process drawing which shows an example of the manufacturing method of the functional polyester fabric of this invention.

  FIG. 1 is a process diagram showing an example of a method for producing a functional polyester fabric of the present invention. The functional polyester fabric according to the present invention includes a polyester fiber fabric and a reactive cyclodextrin condensate fixed to the fabric. Such a functional polyester fabric can be produced by the method for producing a functional polyester fabric according to the present invention.

  The method for producing a functional polyester fabric of the present invention includes a holding step S1, a drawing step S2, a drying step S3, a heat treatment step S4, and a soaping step S5.

  In the holding step S1, the reactive cyclodextrin is held on a polyester fiber fabric.

  As the reactive cyclodextrin, the reactive groups of the reactive cyclodextrin are condensed with each other, or the reactive group of the reactive cyclodextrin is condensed with the hydroxyl group of another cyclodextrin to form a condensate, and Any thing may be used as long as the hydrophobic part of the condensate and the hydrophobic part of the polyester fiber are fixed.

  Examples of such reactive cyclodextrins include nitrogen-containing heterocyclic compounds substituted with halogen as reactive groups, nitrogen-containing heterocyclic compounds include triazine groups, and halogens include fluorine, chlorine, iodine and Bromine is mentioned.

  Among these, the reactive group is preferably a halogenotriazyl group, particularly preferably a monochlorotriazyl group, and the cyclodextrin is preferably α-cyclodextrin or β-cyclodextrin.

  Examples of the reactive cyclodextrin having such a reactive group include monochlorotriazinyl-α-cyclodextrin (hereinafter sometimes referred to as “MCТ-α-cyclodextrin”), monochlorotriazinyl-β-cyclodextrin ( Hereinafter, it may be referred to as “MCТ-β-cyclodextrin”. These reactive cyclodextrins may be used alone or in combination of two or more.

  MCТ-α-cyclodextrin and MCТ-β-cyclodextrin are substances obtained by binding monochlorotriazine to α-cyclodextrin or β-cyclodextrin, which are known substances and are commercially available.

  MCТ-α-cyclodextrin and MCТ-β-cyclodextrin can introduce cyclodextrin into an organic material by covalent bond by nucleophilic substitution reaction with an organic material having a reactive group such as amino group, hydroxyl group, mercapto group, etc. It is attracting attention in various fields including fiber and film.

  In the present invention, the fabric is a fiber structure such as a woven fabric, a knitted fabric, or a nonwoven fabric made of fibers. In such a fabric, it is desirable to scour the raw fabric so that the condensate of the reactive cyclodextrin is firmly fixed to the fabric. Further, when dyeing after scouring, the fabric adheres to the fabric after dyeing. It is desirable to remove the dye present from the fabric.

The polyester fibers constituting the fabric, also be mentioned is the polyalcohol and polycarboxylic acid and the fiber material. The polyvalent carboxylic acid is a port Riesuteru fibrous material, terephthalic acid, isophthalic acid, 2,6-naphthalenedicarboxylic acid, 2,7-naphthalenedicarboxylic acid, 4,4'-diphenyl dicarboxylic acid, 4,4'-diphenylmethane Dicarboxylic acid, diphenyl ketone dicarboxylic acid, 4,4′-diphenylsulfone dicarboxylic acid, succinic acid, adipic acid, and azelaic acid can be mentioned, and polyalcohol includes ethylene glycol, 1,3-propanediol, 1,4 -Butanediol, 1,6-hexanediol, 1,4-cyclohexanedimethanol, polyethylene glycol, polytetramethylene glycol and the like.

  Such polyester fiber materials may contain various additives such as matting agents, flame retardants, antioxidants, ultraviolet absorbers, infrared absorbers, crystal nucleating agents, and fluorescent brighteners as necessary. It may be contained by polymerization or mixing.

  Further, the polyester fiber fabric is not limited to a polyester fiber content of 100% by weight, preferably at least 30% by weight, more preferably 70% by weight or more. Well, as other remaining fiber materials, synthetic fibers such as polyamide, acrylic and polyurethane, and natural fibers such as cotton, silk, wool and rayon can be mixed and used together.

  In the present invention, the reactive cyclodextrin can be fixed to the polyester fiber fabric by holding the reactive cyclodextrin on the polyester fiber fabric and heat-treating it.

The reactive cyclodextrin may be retained on the cloth by contacting the reactive cyclodextrin-containing liquid with the cloth. As a contact method, this technique, such as applying, spraying, or dipping the reactive cyclodextrin-containing liquid on the cloth. Methods commonly used in the field are listed.

The reactive cyclodextrin-containing liquid may be any solution in which reactive cyclodextrin is dissolved, suspended or dispersed in an appropriate solvent. Examples of the solvent in which reactive cyclodextrin is dissolved or suspended include water, methanol, Examples include various hydrophilic organic solvents such as ethanol, among which water is preferred.

  The compounding ratio of the reactive cyclodextrin in the solvent is preferably about 0.5 to 30% by weight, particularly 2 to 20% by weight, based on the entire reactive cyclodextrin-containing liquid.

  In addition, it is preferable to add a basic substance to the reactive cyclodextrin-containing liquid in order to improve the reactivity of the reactive cyclodextrin. Examples of such basic substances include sodium carbonate and sodium hydroxide. Sodium carbonate is preferred.

  Such a basic substance preferably has a blending ratio in the reactive cyclodextrin-containing liquid of about 0.5 to 20% by weight, particularly 2 to 20% by weight.

  Alternatively, the basic substance can be blended using the pH of the reactive cyclodextrin-containing liquid as an index. In this case, the basic substance is adjusted so that the pH of the reactive cyclodextrin-containing liquid is 9 to 13, particularly 10 to 12. What is necessary is just to mix | blend a substance.

  The amount of reactive cyclodextrin retained on the fabric of polyester fiber varies depending on the purpose and the properties of the fabric used, but is about 0.5 to 20% by weight, especially 2 to 20% by weight, based on the fabric. It is preferable to hold.

  Adjustment of the holding amount of the reactive cyclodextrin-containing liquid may be performed by applying or spraying a predetermined holding amount of the reactive cyclodextrin-containing liquid when the reactive cyclodextrin-containing liquid is applied or sprayed onto the fabric.

  In the squeezing step S2, when the fabric is immersed in the reactive cyclodextrin-containing liquid, after the immersion, the immersed fabric is squeezed using a squeezer or a centrifuge to retain the reactive cyclodextrin-containing liquid in the fabric. A predetermined amount may be left in the fabric. Moreover, after apply | coating or spraying a reactive cyclodextrin containing liquid, the holding | maintenance amount of the reactive cyclodextrin containing liquid can also be adjusted by squeezing process S2.

  In the drying step S3, the reactive cyclodextrin-containing liquid is retained on the fabric and then dried.

  Since the reactive cyclodextrin does not adhere to the polyester fiber fabric, the drying conditions are not limited, and the reaction can be carried out at a temperature and a time at which the solvent of the reactive cyclodextrin-containing liquid is removed. As an example of such drying conditions, for example, drying conditions at 100 to 150 ° C. for 0.5 to 5 minutes may be mentioned.

  In the heat treatment step S4, the reactive cyclodextrin held on the fabric is condensed and fixed to the fabric.

  The heat treatment of the fabric holding the reactive cyclodextrin may be a temperature at which the reactive cyclodextrin adheres to the fabric and the fabric and the cyclodextrin do not deteriorate. The higher the temperature, the longer the time, the stronger the adhesive strength. can get. Specifically, heat treatment is performed at 130 ° C. or higher.

  In the present embodiment, the heat treatment is performed at the above temperature for 0.5 minutes or more. For example, if the heating temperature is 130 ° C., 1 to 5 minutes, 150 ° C. for 1 to 4 minutes, and if the heating temperature is 170 ° C., the heating temperature is 1 to 3 minutes. If it is 190 degreeC, it is 0.5 to 3 minutes.

  This heat treatment may be performed all at once, or may be performed in a plurality of times, and the reactive cyclodextrin can be reliably fixed to the fabric within the range of the heat treatment temperature and time. . Alternatively, the heat treatment can be performed to some extent, and after removing the deposit on the fabric surface by drying, the heat treatment can be performed again.

  In the soaping step S5, deposits such as unreacted reactive cyclodextrin adhering to the fabric are removed. The soaping may be performed by a method commonly used in this technical field.

  In this embodiment, the soaped fabric is dried. There is no restriction | limiting as drying conditions, It can implement at the temperature and time which are the grades from which the solvent used by soaping process S5 is removed. As an example of such drying conditions, for example, drying conditions at 130 to 170 ° C. for 0.5 to 5 minutes may be mentioned.

  The functional polyester fabric of the present invention thus obtained has various sportswear, outdoor wear, raincoat, umbrella, men's clothing, women's clothing, work clothing, protective clothing, artificial leather, etc. It can be suitably used for footwear, heels, curtains, waterproof sheets, tents, car seats and the like. In addition, the reactive cyclodextrin is fixed to the polyester fiber fabric without using a binder, so it has excellent texture, wear resistance, durability, elasticity, and is not easily wrinkled. The advantage of the polyester fabric that it is hard to collapse, has heat resistance and is very durable is not impaired.

Example 1
(1) Production of functional polyester fabric In 200 mL of water, 4 g of sodium carbonate (2% by weight with respect to water) was added and dissolved (pH 11.1), and 20 g of MCT-β-cyclodextrin (10 with respect to water). % By weight) was added and dissolved.

This aqueous solution was maintained at about 20 ° C., and a polyester fiber knitted fabric with a size of 40 cm × 30 cm (weight per unit: 180 g / m ² , 48 wells / inch, 51 courses / inch) was immersed for about 5 seconds.

  Next, the soaked fabric was squeezed at a squeezing rate of 100% using a mangle squeezer and then dried at 130 ° C. for 3 minutes.

  After drying, the fabric holding MCТ-β-cyclodextrin was heat-treated at 150 ° C. for 1 minute, and then soaped using 40 ° C. water for 10 minutes. The soaped fabric was dried at 60 ° C. for 30 minutes. Thus, the functional polyester fabric of the present invention was obtained.

(2) Confirmation of deodorizing effect The deodorizing function of the functional polyester fabric obtained in (1) was confirmed. A deodorization test was conducted using three components of isovaleric acid, ammonia and acetic acid as odor components, and the deodorization performance was evaluated by the following method. The deodorization test was carried out by the gas chromatography method for isovaleric acid and the detector tube method for ammonia and acetic acid based on the method of the Fiber Evaluation Technology Council.

  Moreover, the said functional polyester fabric was wash | cleaned 10 times on the conditions according to JlS L 0217-103 method, and the deodorizing function after washing was confirmed. The results are as shown in Tables 1 and 2.

(Example 2)
A functional polyester fabric of Example 2 was obtained in the same manner as in Example 1 except that the heat treatment was performed at 130 ° C.

  About this functional polyester fabric, the deodorizing function was confirmed like Example 1. FIG. The results are as shown in Table 1.

(Comparative Example 1)
A functional polyester fabric of Comparative Example 1 was obtained in the same manner as in Example 1 except that α-cyclodextrin was used instead of MCТ-β-cyclodextrin.

  About this functional polyester fabric, the deodorizing function was confirmed like Example 1. FIG. The results are as shown in Table 1.

(Comparative Example 2)
A functional polyester fabric of Comparative Example 2 was obtained in the same manner as in Example 1 except that γ-cyclodextrin was used instead of MCТ-β-cyclodextrin.

(Comparative Example 3)
A functional polyester fabric of Comparative Example 3 was obtained by carrying out in the same manner as in Example 1 except that the heat treatment was performed at 100 ° C.

(Comparative Example 4)
The polyester fiber knitted fabric (untreated product) used in Example 1 was referred to as Comparative Example 4.

  About this functional polyester fabric, it carried out similarly to Example 1, and confirmed the deodorizing test and the deodorizing function after washing. The results are as shown in Table 1.

  As apparent from Table 1 above, when MCТ-β-cyclodextrin is used as the reactive cyclodextrin and heat-treated at 130 ° C., the cyclodextrin condensate adheres to the fabric, increasing the fabric weight. I understand that.

  Furthermore, from Table 2, the functional polyester fabric of Example 1 has a high deodorizing rate with respect to ammonia, isovaleric acid and acetic acid, and the deodorizing function is not limited even after repeated washing 10 times. It can be seen that a sufficiently high practical value is maintained, and the condensation product of the reactive cyclodextrin is firmly adhered to the polyester fiber fabric.

  Further, the functional fabric of the present invention has a high ammonia deodorizing ability, and when washing is repeated using tap water, the result is that the ammonia deodorizing rate is higher depending on the number of washings. . For example, the ammonia deodorization rate when the functional polyester fabric of “Example 1” was washed 50 times with tap water was 86%, and the ammonia deodorization rate after washing 100 times was 92%.

Claims (5)

And the fabric of polyester Le textiles,
A functional polyester fabric comprising a condensate in which the hydrophobic portion of the fabric surface and the hydrophobic portion of the reactive cyclodextrin are fixed and the reactive cyclodextrins are also condensed with each other .   The functional cyclodextrin according to claim 1, wherein the reactive cyclodextrin is monochlorotriazinyl-β-cyclodextrin.   The functional polyester fabric according to claim 1 or 2, which has a deodorizing function. The fabric of polyester Le textiles, a step holding for holding the reactive cyclodextrin with a basic substance,
A heat treatment step of condensing the reactive cyclodextrin and fixing the condensate of the reactive cyclodextrin to the fabric by heat-treating the fabric holding the reactive cyclodextrin at 130 to 200 ° C . ; The manufacturing method of the functional polyester fabric characterized by including this. In the heat treatment step, the heat treatment is performed by 0 . The method for producing a functional polyester fabric according to claim 4, wherein the method is performed under a condition of 5 minutes or more.

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