Antistatic and antibacterial polyester fabric as well as preparation method and application thereof
By introducing phenolic hydroxyl groups on the surface of polyester fibers and forming a chitooligosaccharide network structure, the problem of the antibacterial and antistatic effects of polyester fabrics is solved, and efficient and long-lasting finishing effects are achieved, and production energy consumption is reduced.
Patent Information
- Application Number
- CN202411683246.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-22
- Publication Date
- 2025-02-18
AI Technical Summary
The antibacterial and antistatic effects of existing polyester fabrics are not lasting during use, and the finishing method has problems of high production energy consumption and fiber damage.
By introducing phenolic hydroxyl groups on the surface of polyester fibers and combining laccase to catalyze the reaction of phenolic hydroxyl-containing chin oligosaccharides with polyester fabrics, a chin oligosaccharide network structure is formed to achieve antistatic and antibacterial effects.
It achieves the long-lasting, stable anti-static and antibacterial effects of polyester fabrics, reduces production energy consumption, and has little impact on the feel of the fabric and less fiber damage.
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Abstract
Description
Technical Field
[0001] The invention relates to functional textiles, in particular to an antistatic and antibacterial polyester fabric and a preparation method and application thereof. Background Art
[0002] The main component of polyester fiber is polyethylene terephthalate, which is a common synthetic fiber raw material. It has the advantages of good elasticity and high strength and is widely used in outdoor clothing and other sports equipment fabrics. However, due to the poor hydrophilicity of polyester fiber, clothing processed with this type of fabric is prone to static electricity during wearing, and is easy to absorb dust and particles, sebum and other stains in the environment, which are stained on the surface of the fabric and become a good habitat for various microorganisms. Under suitable temperature and humidity conditions, the colonies grow and reproduce. Therefore, how to carry out antibacterial and antistatic finishing of polyester fabrics has gradually become a research focus.
[0003] In order to reduce the static electricity accumulation of polyester fabrics during use, researchers have used methods such as applying antistatic agents to reduce the static electricity accumulation on the surface of polyester fabrics and avoid the growth of bacteria on the fabric surface caused by dust adsorption. The disadvantage is that the finishing effect is not long-lasting, and the antibacterial and antistatic effects of the fabric surface decrease after washing. On the other hand, in order to give polyester a long-lasting and stable antibacterial effect, researchers use antibacterial polyester yarns for fabric processing, or use reactive antibacterial agents for polyester fabric finishing. Antibacterial polyester yarns refer to polyester fibers that have antibacterial components added during molding. However, due to the tight structure of polyester fibers and the high glass transition temperature, the antibacterial components inside the fibers of such polyester textiles cannot effectively play an antibacterial role in daily use. The use of antibacterial agents for post-finishing is a commonly used polyester antibacterial finishing method. The basic method is to dip the polyester fabric into antibacterial chemicals, and then form a mesh-structured antibacterial layer on the fiber surface after high-temperature baking, thereby achieving the purpose of antibacterial finishing. In actual production, the use of padding and baking method for antibacterial finishing of polyester fabrics still has shortcomings, mainly manifested in the need to improve the durability and stability of the finishing. The reason is that the surface of polyester fibers lacks reactive groups, and only contains a small amount of carboxyl and hydroxyl groups on the end groups of fiber macromolecules, and the reaction accessibility is low, so that the antibacterial agent is not firmly combined with the fiber, and the antibacterial finishing effect is not durable. It can be seen that there is a need to develop a polyester fabric finishing method with durable and stable antibacterial and antistatic effects. It not only needs to have high antibacterial and antistatic properties, but also requires little impact on the feel of the fabric, less fiber damage, and a more durable and stable finishing effect. Summary of the invention
[0004] In view of the problem that the antibacterial and antistatic finishing effects of the above-mentioned polyester fabric are not durable and unstable, the present invention provides an antistatic and antibacterial polyester fabric and a preparation method and application thereof. Phenolic hydroxyl groups are introduced into the surface of polyester fibers, and laccase is used to catalyze the Schiff base and Michael addition reactions of phenolic hydroxyl-containing chitosan oligosaccharides with polyester fabrics, and the "phenol-phenol" coupling reaction between phenolic hydroxyl-containing chitosan oligosaccharides molecules is carried out to construct a chitosan network structure on the surface of polyester fibers, thereby giving the polyester fabrics efficient, durable and stable antistatic and antibacterial effects.
[0005] In order to achieve the above object, the present invention provides a finishing method for antistatic and antibacterial polyester fabric, which comprises the following steps: (1) Polyester enzymatic pretreatment: The polyester fabric is immersed in a lipase solution for pretreatment; (2) Introducing phenolic hydroxyl sites: The polyester fabric treated in step (1) is immersed in a p-hydroxyphenylethylamine solution, and phenolic hydroxyl groups are grafted onto the surface of the polyester fiber with the aid of 1-ethyl-3-(3-dimethylaminopropyl)-carbodiimide and N-hydroxysuccinimide; (3) Enzymatic construction of an antibacterial layer: The polyester fabric treated in step (2) is immersed in a solution containing phenolic hydroxyl chitosan oligosaccharides, and the phenolic hydroxyl chitosan oligosaccharides are grafted onto the surface of the polyester fiber through laccase-catalyzed oxidation to form a chitosan oligosaccharide network cross-linked antibacterial layer, thereby obtaining an antistatic and antibacterial polyester fabric.
[0006] In one embodiment of the present invention, in step (1), the polyester fabric is a polyester fabric made from polyester filaments and is bleached, dyed or printed.
[0007] In one embodiment of the present invention, in step (1), the concentration of lipase in the lipase solution is 2.5-5 U / mL, and the treatment conditions are: temperature 40-50°C, pH range 7.5-8.5, bath ratio 1:(10-15), and treatment time 3-6 h.
[0008] In one embodiment of the present invention, in step (2), the p-hydroxyphenylethylamine solution comprises 7.5-10 g / L p-hydroxyphenylethylamine hydrochloride, 3-6 g / L 1-ethyl-3-(3-dimethylaminopropyl)-carbodiimide, and 2-4 g / L N-hydroxysuccinimide; the treatment conditions are: temperature 25-30°C, pH range 5-7, bath ratio 1:(10-15), and treatment time 6-12 h.
[0009] In one embodiment of the present invention, in step (3), the solution containing phenolic hydroxyl chitosan oligosaccharides comprises 25-50 g / L of phenolic hydroxyl chitosan oligosaccharides and 0.5-1 U / mL of laccase; the treatment conditions are: temperature 45-55°C, pH range 5-6, bath ratio 1:(10-15), and treatment time 2-4 h.
[0010] In one embodiment of the present invention, in step (3), the preparation process of the phenolic hydroxyl group-containing chitosan oligosaccharide is as follows: p-hydroxyphenylacetic acid, chitosan oligosaccharide, 1-ethyl-3-(3-dimethylaminopropyl)-carbodiimide, and N-hydroxysuccinimide are treated at 30-40° C. and pH 5 for 4-6 h, then dialyzed to remove small molecules with a molecular weight of less than 1000, and then freeze-dried to obtain the phenolic hydroxyl group-containing chitosan oligosaccharide.
[0011] The second aspect of the present invention provides antistatic and antibacterial polyester fabric finished by the above finishing method.
[0012] The third aspect of the present invention provides the use of the above-mentioned antistatic and antibacterial polyester fabric in the preparation of clothing fabrics, household textiles, and special textiles.
[0013] Through the above technical solution, the present invention achieves the following beneficial effects: The present invention firstly pre-treats polyester fabric with the aid of lipase to hydrolyze ester bonds on the surface of polyester fibers to generate carboxyl groups; then, by grafting p-hydroxyphenylethylamine, phenolic hydroxyl groups are introduced on the surface of polyester fibers; finally, the polyester fabric is treated with chitosan oligosaccharides containing phenolic hydroxyl groups, and a chitosan oligosaccharide network structure containing phenolic hydroxyl groups is formed on the fiber surface through enzyme-catalyzed grafting and cross-linking to obtain antistatic and antibacterial polyester fabrics. Compared with the traditional high-temperature baking method of impregnating antibacterial agents, the present invention uses a biological enzyme method to perform antistatic and antibacterial finishing of polyester fabrics, which has the following advantages: (1) Excellent finishing effect: The present invention uses laccase to catalyze the grafting of phenolic hydroxyl group-containing chitosan oligosaccharides onto the surface of polyester fibers. In this process, the phenolic hydroxyl group-containing chitosan oligosaccharides can not only undergo Schiff base reaction or Michael addition reaction with the phenolic hydroxyl groups on the polyester through the amino groups, but can also directly form a "phenol-phenol" coupling structure with the phenolic hydroxyl groups introduced onto the polyester surface. Moreover, the phenolic hydroxyl group-containing chitosan oligosaccharides on the surface of polyester fibers can also undergo "phenol-phenol" coupling and enzymatic reaction between the phenolic hydroxyl groups and the amino groups. The above-mentioned reaction increases the amount and strength of chitosan oligosaccharide binding on the polyester surface, thereby giving the polyester fabric a durable finishing effect.
[0014] (2) Low production energy consumption: The polyester fiber is treated with lipase, grafted with phenolic hydroxyl groups, and grafted with phenolic hydroxyl-containing chitosan oligosaccharides catalyzed by laccase under low temperature and mild conditions, thereby constructing a long-lasting and efficient chitosan oligosaccharide antibacterial layer on the polyester surface, avoiding the defects of the traditional high-temperature baking method, which has high production energy consumption and is prone to cause severe damage to polyester fibers.
[0015] (3) The fabric has a good feel: low molecular weight phenolic hydroxyl chitosan oligosaccharides are grafted and catalytically cross-linked on the fiber surface through laccase catalysis. Compared with the traditional chemical finishing method that uses cross-linking agents and adhesives to load antibacterial agents on the fiber surface, the polyester fabric after bio-enzyme finishing has better drape. DETAILED DESCRIPTION
[0016] The specific implementation of the present invention is described in detail below in conjunction with the examples. It should be understood that the specific implementation described herein is only used to illustrate and explain the present invention, and is not used to limit the present invention.
[0017] In the following examples, chitosan oligosaccharides containing phenolic hydroxyl groups are prepared using p-hydroxyphenylacetic acid and chitosan oligosaccharides, and the preparation process is as follows: p-hydroxyphenylacetic acid 10 g / L, chitosan oligosaccharides with a molecular weight of 2000 50 g / L, 1-ethyl-3-(3-dimethylaminopropyl)-carbodiimide 6 g / L, N-hydroxysuccinimide 4 g / L; after treatment at 30° C. and pH 5 for 6 h, dialysis is performed to remove small molecules with a molecular weight of less than 1000, and phenolic hydroxyl chitosan oligosaccharides are obtained after freeze-drying.
[0018] Embodiment 1: The finishing methods of antistatic and antibacterial polyester fabrics are: (1) Polyester enzymatic pretreatment: Select polyester filament as raw material, weight 120g / m 2 The colored polyester fabric was used as a sample, which was immersed in a lipase solution for pretreatment, and then washed with water; the treatment process conditions were: lipase 2.5 U / mL, treatment at 40℃, pH 7.5 for 3 h, bath ratio 1:10; (2) Introducing phenolic hydroxyl sites: The polyester fabric treated in step (1) was immersed in a p-hydroxyphenylethylamine solution, and phenolic hydroxyl groups were grafted on the surface of the polyester fiber with the help of 1-ethyl-3-(3-dimethylaminopropyl)-carbodiimide and N-hydroxysuccinimide. After treatment, the sample was washed with water; the treatment process conditions were: p-hydroxyphenylethylamine hydrochloride 7.5 g / L, 1-ethyl-3-(3-dimethylaminopropyl)-carbodiimide 3 g / L, N-hydroxysuccinimide 2 g / L, treatment at 25°C, pH 5 for 6 h, and bath ratio 1:10; (3) Enzymatic construction of antibacterial layer: The polyester fabric treated in step (2) was immersed in a solution of phenolic hydroxyl chitosan oligosaccharide, and the phenolic hydroxyl chitosan oligosaccharide was grafted onto the surface of the polyester fiber through laccase-catalyzed oxidation to form a network cross-linked antibacterial layer; the sample was washed and dried to obtain an antistatic and antibacterial polyester fabric; the treatment process conditions were: 25 g / L phenolic hydroxyl chitosan oligosaccharide, 0.5 U / mL laccase, treatment at 45°C, pH 5 for 2 h, and a bath ratio of 1:10.
[0019] Embodiment 2: The finishing methods of antistatic and antibacterial polyester fabrics are: (1) Polyester enzymatic pretreatment: Select polyester filament as raw material, weight 95g / m 2The printed polyester fabric was used as a sample, which was immersed in a lipase solution for pretreatment, and then washed with water; the treatment process conditions were: lipase 5 U / mL, treatment at 50℃, pH 8.5 for 6 h, bath ratio 1:15; (2) Introducing phenolic hydroxyl sites: The polyester fabric treated in step (1) was immersed in a p-hydroxyphenylethylamine solution, and phenolic hydroxyl groups were grafted on the surface of the polyester fiber with the help of 1-ethyl-3-(3-dimethylaminopropyl)-carbodiimide and N-hydroxysuccinimide. After treatment, the sample was washed with water; the treatment process conditions were: p-hydroxyphenylethylamine hydrochloride 10 g / L, 1-ethyl-3-(3-dimethylaminopropyl)-carbodiimide 6 g / L, N-hydroxysuccinimide 4 g / L, treatment at 30°C, pH 7 for 12 h, bath ratio 1:15; (3) Enzymatic construction of antibacterial layer: The polyester fabric treated in step (2) was immersed in a solution of phenolic hydroxyl chitosan oligosaccharide, and the surface of the polyester fiber was grafted with phenolic hydroxyl chitosan oligosaccharide by laccase catalyzed oxidation to form a network cross-linked antibacterial layer; the sample was washed and dried to obtain an antistatic and antibacterial polyester fabric; the treatment process conditions were: 50 g / L phenolic hydroxyl chitosan oligosaccharide, 1 U / mL laccase, treatment at 55°C, pH 6 for 4 h, and a bath ratio of 1:15.
[0020] Embodiment 3: The finishing methods of antistatic and antibacterial polyester fabrics are: (1) Polyester enzymatic pretreatment: Select polyester filament as raw material, weight 110g / m 2 The printed polyester fabric was used as a sample, which was immersed in a lipase solution for pretreatment, and then washed with water; the treatment process conditions were: lipase 4 U / mL, treatment at 45℃, pH 7 for 4.5 h, bath ratio 1:13; (2) Introducing phenolic hydroxyl sites: The polyester fabric treated in step (1) was immersed in a p-hydroxyphenylethylamine solution, and phenolic hydroxyl groups were grafted on the surface of the polyester fiber with the help of 1-ethyl-3-(3-dimethylaminopropyl)-carbodiimide and N-hydroxysuccinimide. After treatment, the sample was washed with water; the treatment process conditions were: p-hydroxyphenylethylamine hydrochloride 9 g / L, 1-ethyl-3-(3-dimethylaminopropyl)-carbodiimide 5 g / L, N-hydroxysuccinimide 3 g / L, treatment at 30°C, pH 6 for 8 h, and bath ratio 1:13; (3) Enzymatic construction of antibacterial layer: The polyester fabric treated in step (2) was immersed in a solution of phenolic hydroxyl chitosan oligosaccharide, and the phenolic hydroxyl chitosan oligosaccharide was grafted onto the surface of the polyester fiber through laccase-catalyzed oxidation to form a network cross-linked antibacterial layer; the sample was washed and dried to obtain an antistatic and antibacterial polyester fabric; the treatment process conditions were: 40 g / L phenolic hydroxyl chitosan oligosaccharide, 1 U / mL laccase, treatment at 50°C, pH 6 for 3 h, and a bath ratio of 1:13.
[0021] Comparative Example 1: The polyester fabric in Example 1 was not subjected to any treatment.
[0022] Comparative Example 2: In implementation 1, steps (1) and (2) are omitted and only step (3) is performed. Other conditions or descriptions are consistent with those in Example 1.
[0023] Comparative Example 3: In implementation 1, step (1) is omitted and steps (2) and (3) are performed only. Other conditions or descriptions are consistent with those in Example 1.
[0024] Comparative Example 4: In implementation 1, step (2) is omitted and only steps (1) and (3) are performed. Other conditions or descriptions are consistent with those in Example 1.
[0025] Comparative Example 5: The process of steps (1), (2) and (3) in Example 1 is carried out, but in step (3), chitosan oligosaccharide without phenolic hydroxyl groups is used (i.e., phenolic hydroxyl groups are not grafted on the surface of chitosan oligosaccharide), and other conditions or descriptions are consistent with those in Example 1.
[0026] Comparative Example 6: The printed polyester fabric in Example 2 was not subjected to any treatment.
[0027] Comparative Example 7: In implementation 2, steps (1) and (2) are omitted and only step (3) is performed. Other conditions or descriptions are consistent with those in Example 2.
[0028] Comparative Example 8: In implementation 2, step (1) is omitted and steps (2) and (3) are performed only. Other conditions or descriptions are consistent with those in Example 2.
[0029] Comparative Example 9: In implementation 2, step (2) is omitted and only steps (1) and (3) are performed. Other conditions or descriptions are consistent with those in Example 2.
[0030] Comparative Example 10: The method of Example 2 is carried out through steps (1), (2) and (3), but in step (3), chitosan oligosaccharide without phenolic hydroxyl groups is used (i.e., phenolic hydroxyl groups are not grafted onto the surface of chitosan oligosaccharide), and other conditions or descriptions are consistent with those of Example 2.
[0031] Performance Testing The polyester samples prepared in the embodiment and the comparative example were washed at 40°C for 60 min and then dried, and then the performance of the fabric was evaluated according to the following methods and standards, including: referring to GB / T 3923.1-2013 to determine the warp breaking strength of the polyester fabric sample, and calculating the strength change rate relative to the untreated polyester fabric; referring to GB / T 23329-2009 to determine the fabric drape coefficient, and evaluate the effect of processing on the sample feel. The smaller the drape coefficient, the better the drape of the fabric and the softer the feel. Gram-negative bacteria Escherichia coli were selected, and the antibacterial rate of polyester fabric was determined according to GB / T 20944.3-2008 "Evaluation of Antibacterial Properties of Textiles Part 3: Oscillation Method"; referring to GB / T12703.1-2008 to determine the induced voltage and half-life of polyester fabric. The smaller the values of the induced voltage and half-life, the better the antistatic performance, and vice versa. The results are shown in Table 1.
[0032] Table 1 Performance test results
[0033] From Table 1, we can see that: a. The fabric strength of the samples (Example 1, Example 2, Example 3) treated by the method described in the present invention is slightly increased, which is related to the formation of a network structure on the fiber surface through grafting and cross-linking during the laccase treatment; the drape coefficient of the sample fabric is similar to that of the untreated polyester fabric, indicating that the treatment has little effect on the feel of the fabric; the antibacterial rate of the fabric is high, indicating that the fabric has a long-lasting antibacterial effect; the induced voltage and half-life of the sample are significantly reduced compared with the untreated sample, indicating that the polyester fabric has a better antistatic effect after treatment.
[0034] b. The polyester fabric without any treatment (Comparative Example 1, Comparative Example 6) has no antibacterial effect and the antistatic effect is the worst.
[0035] c. The fabric strength change rate and drape coefficient of the samples treated only by step (3) without treatment in steps (1) and (2) (Comparative Example 2, Comparative Example 7) are similar to those of the samples in the implementation example; the antibacterial rate of the fabric is far lower than that of the samples in the implementation example. The reason is related to the fact that no phenolic hydroxyl group is introduced on the surface of the polyester fiber, that is, no reaction between the phenolic hydroxyl group-containing chitosan and the polyester fiber macromolecule occurs in the laccase-catalyzed grafting in step (3), and only the phenolic hydroxyl group-containing chitosan reacts with each other on the fiber surface to form a film (including through "phenol-phenol" coupling reaction, Schiff base reaction between phenolic hydroxyl group and amino group, or Michael addition reaction). Therefore, the amount of chitosan oligosaccharide bound to the fiber surface is relatively small, resulting in the antibacterial rate of the sample being lower than that of the sample in the implementation example, and the antistatic effect needs to be improved.
[0036] d. The fabric strength change rate and drape coefficient of the samples treated only with steps (2) and (3) without step (1) (Comparative Example 3 and Comparative Example 8) were similar to those of the implementation sample; the antibacterial rate of the fabric was lower than that of the implementation sample. The reason for this was that the fiber was not pretreated with lipase, and the fiber surface lacked carboxyl groups that could react with p-hydroxyphenylethylamine, resulting in the failure to form phenolic hydroxyl chitosan oligosaccharides grafted and cross-linked with the fiber in step (3), and the antistatic effect of the fabric was not ideal.
[0037] e. The fabric strength of the samples treated only by steps (1) and (3) (Comparative Example 4 and Comparative Example 9) without step (2) was less than 0, which may be related to the slight damage of the polyester fiber in the pretreatment. The fabric drape coefficient was similar to that of the sample in the embodiment, and the antibacterial rate was lower than that of the sample in the embodiment. The reason was that the phenolic hydroxyl reaction sites were not grafted on the surface of the polyester fiber, so that the polyester was not grafted and cross-linked with the phenolic hydroxyl-containing chitosan oligosaccharide in step (3). There was only a self-cross-linking reaction of the phenolic hydroxyl-containing chitosan oligosaccharide on the fiber surface, and the antistatic effect of the fabric needed to be improved.
[0038] f. After the treatment of steps (1), (2) and (3), but using chitosan oligosaccharide without phenolic hydroxyl group (i.e., no phenolic hydroxyl group is grafted on the surface of chitosan oligosaccharide) in the treatment of step (3) (Comparative Example 5, Comparative Example 10), the fabric strength and drape coefficient of the samples are similar to those of the samples in the embodiment; the antibacterial rate of the fabric is higher than that of the samples in other comparative examples, but lower than that of the samples in Examples 1 and 2. The reason is that no cross-linking between chitosan oligosaccharide molecules occurs on the fiber surface (i.e., only Schiff base reaction and Michael addition reaction between chitosan oligosaccharide and phenolic hydroxyl group on the fiber surface exist), so the antistatic effect of the fabric is also lower than that of the samples in the embodiment.
[0039] The preferred embodiments of the present invention are described in detail above. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, a variety of simple modifications can be made to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.
[0040] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.
[0041] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.
Claims
1. A finishing method for antistatic and antibacterial polyester fabric, characterized in that: The steps include: (1) Polyester enzymatic pretreatment: The polyester fabric is immersed in a lipase solution for pretreatment; (2) Introducing phenolic hydroxyl sites: The polyester fabric treated in step (1) is immersed in a p-hydroxyphenylethylamine solution, and phenolic hydroxyl groups are grafted onto the surface of the polyester fiber with the aid of 1-ethyl-3-(3-dimethylaminopropyl)-carbodiimide and N-hydroxysuccinimide; (3) Enzymatic construction of an antibacterial layer: The polyester fabric treated in step (2) is immersed in a solution containing phenolic hydroxyl chitosan oligosaccharides, and the phenolic hydroxyl chitosan oligosaccharides are grafted onto the surface of the polyester fiber through laccase-catalyzed oxidation to form a chitosan oligosaccharide network cross-linked antibacterial layer, thereby obtaining an antistatic and antibacterial polyester fabric.
2. The finishing method according to claim 1, characterized in that: In step (1), the polyester fabric is a polyester fabric made from polyester filaments and is bleached, dyed or printed.
3. The finishing method according to claim 1, characterized in that: In step (1), the concentration of lipase in the lipase solution is 2.5-5 U / mL, and the treatment conditions are: temperature 40-50°C, pH range 7.5-8.5, bath ratio 1:(10-15), and treatment time 3-6 h.
4. The finishing method according to claim 1, characterized in that: In step (2), the p-hydroxyphenylethylamine solution comprises 7.5-10 g / L p-hydroxyphenylethylamine hydrochloride, 3-6 g / L 1-ethyl-3-(3-dimethylaminopropyl)-carbodiimide, and 2-4 g / L N-hydroxysuccinimide; the treatment conditions are: temperature 25-30°C, pH range 5-7, bath ratio 1:(10-15), and treatment time 6-12 h.
5. The finishing method according to claim 1, characterized in that: In step (3), the solution containing phenolic hydroxyl chitosan oligosaccharide includes 25-50 g / L of phenolic hydroxyl chitosan oligosaccharide and 0.5-1 U / mL of laccase; the treatment conditions are: temperature 45-55°C, pH range 5-6, bath ratio 1:(10-15), and treatment time 2-4 h.
6. The finishing method according to any one of claims 1 to 5, characterized in that In step (3), the preparation process of the phenolic hydroxyl group-containing chitosan oligosaccharide is as follows: treating p-hydroxyphenylacetic acid, chitosan oligosaccharide, 1-ethyl-3-(3-dimethylaminopropyl)-carbodiimide, and N-hydroxysuccinimide at 30-40° C. and pH 5 for 4-6 h to remove small molecules with a molecular weight less than 1000, and then freeze-drying to obtain the phenolic hydroxyl group-containing chitosan oligosaccharide.
7. Antistatic and antibacterial polyester fabric finished by the finishing method according to any one of claims 1 to 6.
8. Use of the antistatic and antibacterial polyester fabric according to claim 7 in the preparation of clothing fabrics, household textiles and special textiles.