Processing method of silk

Abstract

The invention belongs to the technical field of silk processing, and particularly relates to a processing method of silk. The method comprises the following steps of (1) silk drying; (2) degumming: adding 1.0 to 2.0 mol / L of urea solution into a degumming groove; performing heating to 50 to 60 DEG C; starting ultrasonic waves; soaking the silk dried in the step (1) into water in the degumming groove; adding alkaline protease into the urea solution according to the proportion of 0.6 / 100 mL to 1.2g / 100 mL to be subjected to hydrolysis for 1h to 2h; then, adding lipase according to the proportionof 0.3 / 100 mL to 0.6g / 100 mL to be subjected to hydrolysis for 1h to 2h; preparing coarse degumming silk; (3) water washing; (4) washing: adding a functional detergent for washing for 50 to 60min; then, preparing the degumming silk after cleaning by clean water. The method has the advantages that the silk degumming efficiency is high; the degumming time is short; the color quality of raw silk isbetter; no pollution exists; green and environment-friendly effects are achieved.

Description

【Technical field】 [0001] The invention relates to the technical field of silk processing, in particular to a silk processing method. 【Background technique】 [0002] Silk is mainly composed of silk fibroin and sericin protein wrapped outside, which accounts for about 97% of silk, and sericin accounts for more than a quarter of silk. In the degumming process of silk, sericin is mainly removed. The silk fibroin part after degumming is the subject of silk processing. The process of silk degumming is divided into two parts, the first is the swelling and denaturation of sericin protein, and then the process of the molecules of sericin protein being dispersed or dissolved in water. Due to the complex amino acid composition of sericin, sericin is divided into easily soluble and insoluble parts according to its dissolution sequence. , the geometric position of the amino acid, etc.), and is related to the degumming agent used. Commonly used silk degumming processes include boiling ...

AI Technical Summary

Problems solved by technology

Commonly used silk degumming processes include boiling water degumming method, soaping method, organic acid method, enzymatic hydrolysis method and alkali method. Among them, the boiling water method has high temperature and takes a long time, and high temperature is likely to cause denaturation of silk fibroin; High requirements, low degumming efficiency, long time-consuming, low temperature of ethanol-tartaric acid method, high degumming efficiency, but tartaric acid is easily absorbed by silk fibroin, and it is difficult to clean and remove, which has strong acidity and low toxicity; enzymatic hydrolysis method uses a Or synergistic degumming of several enzymes, the enzyme consumption is fast, the emulsifier requirements are high, and the degumming effect is slow; while the alkali method has high degumming efficiency and short time, but the reaction process is not easy to control, which will cause damage to silk fibroin.

In addition, after degumming, silk fibroin is a fibrous protein, which is prone to oxidative discoloration and microbial growth due to long-term contact with the external environment, resulting in reduced processing performance and quality of silk