Plant functional natural silk and preparation method thereof

Abstract

The invention provides a plant functional natural silk and a preparation method thereof. The plant functional natural silk comprises 0.1-1.5% of a plant extract, the plant extract comprises, but not limited to, a combination of one or more of mint, wormwood, sarcandra glabra, lavender, valerian, chitin and seaweed. The method comprises the steps of micro-treatment of the natural silk, preparationof a functional modifier containing the plant extract, preparation of the plant functional natural silk. In the micro-treatment of the natural silk, the natural silk is subjected to micro-treatment for 1-10 min at the temperature of 30-35 DEG C; and in the preparation of the plant functional natural silk, pH is regulated to be 5.5-6.5 by using 0.2% of glacial acetic acid, silk is added, the heating rate is 0.2-0.5 DEG C / min, and the temperature is raised to be 50 DEG C and is maintained constantly for 10-15 min. The strength of the plant functional natural silk is 4.51-4.67 g / D, the elongationat break is 31.55-36.24%, and the mite repelling rate is high even if the plant functional natural silk has been washed for multiple times.

Description

technical field [0001] The invention belongs to the field of fiber modification, and relates to a plant functional natural silk and a preparation method thereof. Background technique [0002] Natural silk is a natural macromolecular polymer. Natural silk is mainly composed of silk fibroin and sericin. It is an important cold-proof material for people in the cold winter and an important raw material for the textile industry. [0003] Silk is a natural protein fiber and the only natural filament available for weaving in nature. my country is the first country in the world to plant mulberry, raise silkworms, reel silk and weave silk. Silk is a relatively precious and high-grade raw material in textile fibers, and its total amount accounts for about 0.2% of the world's total fiber output. Its good comfort and health care properties make it a textile that people have always loved-"permanent fashion". Silkworm silk is usually divided into two categories: domestic silkworm silk a...

AI Technical Summary

Problems solved by technology

Carbodiimide is used as a condensation reagent to activate the carboxyl group and react with the amino group of silk to form an amide bond. The modified silk has high bulkiness, good durability, strong abrasion resistance, high fastness, and is not easy to use. However, the formation reaction of amide bonds is difficult to control, and the reaction is incomplete, resulting in waste of raw materials, and the process is complex, with many reagents and cumbersome steps

[0005] The Chinese patent with the application number CN201710542556.7 discloses a modified silk fabric and its preparation method, which uses quercetin and a reactive ultraviolet absorber to mix uniformly in water, and adjusts the pH to 9-10.5. After the reaction, the obtained Modified quercetin; the pH value of modified quercetin is adjusted to 3-5, silk fabric is added thereto, after processing at 75-90°C, modified silk fabric is obtained, but only The existence of modified quercetin can be detected, and the product prepared according to this method actually has a low content of modified quercetin in silk

[0006] The existing technology of natural silk modification also has the following defects: (1) the mechanical properties of natural silk after modification are reduced, the strength is reduced, and the water absorption is reduced; (2) natural silk after plant modification has antibacterial and antibacterial effects Poor, the effect is not obvious; (3) Modified natural silk, the effect of removing mites is not obvious

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