阅读说明：本技术 一种丝绵整理方法 (Silk floss finishing method ) 是由 张建勇 陈厚梅 王平 于 2020-07-01 设计创作，主要内容包括：本发明公开了一种丝绵整理方法,包括如下步骤：A.配置含氨基抗菌剂整理液,所述的含氨基抗菌剂包括聚赖氨酸、脱乙酰>85%的壳聚糖和脱乙酰>85%且取代度为60～90%的壳聚糖季铵盐,将丝绵浸渍在所述整理液中；B.往步骤A所述的整理液中添加漆酶,将完成步骤A浸渍处理的丝绵继续浸渍；C.将步骤B处理后的丝绵在水中清洗；D.将步骤C处理后的丝绵烘干水分。本发明借助于漆酶,通过催化丝绵纤维表面接枝含氨基抗菌剂,赋予丝绵产品抗菌效果,具有处理工艺安全、生产能耗较低的特点,实现了丝绵产品生态功能化加工。(The invention discloses a silk floss finishing method, which comprises the following steps: A. preparing amino-containing antibacterial agent finishing liquid, wherein the amino-containing antibacterial agent comprises polylysine, chitosan with deacetylation of more than 85% and chitosan quaternary ammonium salt with deacetylation of more than 85% and substitution degree of 60-90%, and soaking silk floss in the finishing liquid; B. adding laccase into the finishing liquid in the step A, and continuously dipping the silk floss subjected to dipping treatment in the step A; C. b, cleaning the silk floss treated in the step B in water; D. and D, drying the silk floss processed in the step C to remove water. The invention endows the silk floss product with an antibacterial effect by catalyzing the grafting of the amino-containing antibacterial agent on the surface of the silk floss fiber by the laccase, has the characteristics of safe treatment process and low production energy consumption, and realizes the ecological functional processing of the silk floss product.)

1. A silk floss finishing method is characterized by comprising the following steps:

A. preparing amino-containing antibacterial agent finishing liquid, wherein the amino-containing antibacterial agent comprises polylysine, chitosan with deacetylation of more than 85% and chitosan quaternary ammonium salt with deacetylation of more than 85% and substitution degree of 60-90%, and soaking silk floss in the finishing liquid;

B. adding laccase into the finishing liquid in the step A, and continuously dipping the silk floss subjected to dipping treatment in the step A;

C. b, cleaning the silk floss treated in the step B in water;

D. and D, drying the silk floss processed in the step C to remove water.

2. The silk floss finishing method according to claim 1, wherein the mass concentration of the amino-containing natural antibacterial agent in the amino-containing antibacterial agent finishing liquid in the step A is 5-10 g/L, the pH value of the finishing liquid is 4.5-5.5, the dipping bath ratio is 1: 20-40, the dipping treatment temperature is 45-50 ℃, and the dipping treatment time is 10-20 min.

3. The silk floss finishing method according to claim 1, characterized in that the laccase is used in the step B in an amount of 0.5-2U/mL.

4. The silk floss finishing method according to claim 1, characterized in that the pH value of the finishing liquid after adding laccase in step B is 4.5-5.5, the dipping bath ratio is 1: 20-40, the dipping treatment temperature is 45-50 ℃, and the dipping treatment time is 1-1.5 h.

5. The method of claim 1, wherein the temperature of the wash water in step C is 40 ℃.

Technical Field

The invention relates to the technical field of textile dyeing and finishing, in particular to a silk floss finishing method.

Background

The silk quilt is a high-grade home textile product, and the main filler of the silk quilt is silk floss taking mulberry silk as a raw material. In the production and processing of the silk quilt, cocoon cooking treatment is firstly carried out, sericin components with spherical structures on the outer layer of the mulberry silk are dissolved by hot water and an alkaline agent or hydrolyzed by protease to be removed, and fibroin with high chemical stability is effectively reserved. The silk floss product obtained after cocoon stripping and cotton opening has the advantages of soft hand feeling, elegant luster, excellent mechanical property and heat retention property. On the other hand, the protein fiber products of the genus bombyx are likely to be nutrients for microorganisms such as bacteria and mold under appropriate temperature and humidity conditions, so that the fabrics are mildewed and may even be transformed into carriers for disease transmission. Therefore, in order to improve the application performance of silk as a high-grade home textile product, it is necessary to perform finishing processing on silk floss for the purpose of improving antibacterial property.

At present, the commonly used antibacterial finishing agent for silk floss products or silk fabrics comprises inorganic silver ions, halamine compounds, organic quaternary ammonium salts and the like, and the adopted process comprises padding, baking or a method combining the padding and the baking. In the non-durable antibacterial finishing, the natural or chemical finishing agent endows the silk floss products with antibacterial effect, and has the defects of being not firmly combined with the mulberry silk fibers, easy to dissolve and lose from the fiber surfaces, and easy to release and even migrate to the skin surfaces; when processing durable antibacterial silk floss varieties, a chemical cross-linking agent is required to be added in the dipping or baking process, so that the problem of oxidation and yellowing of silk floss is easily caused, and the residual chemical cross-linking agent can influence the ecological safety of the silk floss.

Disclosure of Invention

In order to solve the technical problems, the invention provides a silk floss finishing method, which can realize functional modification processing of silk floss under mild conditions and endow silk floss products with durable antibacterial effect. The technical scheme is as follows:

a silk floss finishing method comprises the following steps:

A. preparing amino-containing antibacterial agent finishing liquid, wherein the amino-containing antibacterial agent comprises polylysine, chitosan with deacetylation of more than 85% and chitosan quaternary ammonium salt with deacetylation of more than 85% and substitution degree of 60-90%, and soaking silk floss in the finishing liquid;

B. adding laccase into the finishing liquid in the step A, and continuously dipping the silk floss subjected to dipping treatment in the step A;

C. b, cleaning the silk floss treated in the step B in water;

D. and D, drying the silk floss processed in the step C to remove water.

Further, the mass concentration of the amino-containing natural antibacterial agent in the amino-containing antibacterial agent finishing liquid in the step A is 5-10 g/L, the pH value of the finishing liquid is 4.5-5.5, the dipping bath ratio is 1: 20-40, the dipping treatment temperature is 45-50 ℃, and the dipping treatment time is 10-20 min.

Further, the dosage of the laccase in the step B is 0.5-2U/mL.

Further, in the step B, the pH value of the enzyme finishing liquid is 4.5-5.5, the dipping bath ratio is 1: 20-40, the dipping treatment temperature is 45-50 ℃, and the dipping treatment time is 1-1.5 h.

Further, the temperature of the washing water in step C was 40 ℃.

Has the advantages that: the invention endows the silk floss product with antibacterial effect by catalyzing the surface of the silk floss fiber to graft the amino-containing antibacterial agent with laccase. Compared with the traditional chemical crosslinking antibacterial finishing method, the invention has the following advantages:

the enzyme catalysis efficiency is high, the laccase can catalyze and oxidize the tyrosine in the mulberry silk to react with the amino-containing antibacterial agent, and the grafting amount and the combination fastness of the amino-containing antibacterial agent on silk floss are improved; compared with a single impregnation method adopting an amino-containing antibacterial agent, the washing resistance and durability of the antibacterial effect of the silk floss product are obviously improved;

the enzyme treatment condition is mild, and the antibacterial functional processing of silk floss products is carried out under the conditions of low temperature and near neutrality, so that the method has the advantage of safe finishing process, and avoids the defects of strong damage of mulberry silk fibers, residual chemical cross-linking agent, overproof formaldehyde content in the silk fibers and the like;

energy conservation and emission reduction are realized: the enzyme catalysis amino-containing antibacterial agent is adopted to graft on the surface of the silk floss product, has the characteristics of safe treatment process and low production energy consumption, and realizes the ecological functional processing of the silk floss product.

Detailed Description