Preparation method of polypeptide soybean protein complex fiber

Abstract

The invention discloses a preparation method of a polypeptide soybean protein complex fiber, which comprises the following steps that (1), soybean protein is soaked in a diluted alkali solution, and stirred at a high speed, then a soybean protein solution is obtained, and subjected to ultrafiltration dialysis by an ultrafiltration membrane, and a polypeptide soybean protein mother solution with protein molecular weight of 300-2000 is prepared; (2), the polypeptide soybean protein mother solution is added to a polyvinyl alcohol solution, a cross-linking agent accounting for 1.0-2.0wt% of polyvinyl alcohol is then added, and mixed uniformly by high-speed stirring, and a polypeptide soybean protein and polyvinyl alcohol blended solution is prepared; and (3), the polypeptide soybean protein and polyvinyl alcohol blended solution is filtered, defoamed, and then subjected to spinning forming, strand drafting and aftertreatment to form the polypeptide soybean protein complex fiber. According to the preparation method, production steps are simplified; the manufacturing cost is low; no aldehyde pollution exists; industrial production is facilitated; the protein molecular weight is low; the loss amount of the protein is low; and maintaining of excellent performance of the protein fiber is facilitated.

Description

technical field [0001] The invention relates to the technical field of functional cellulose fibers, in particular to the preparation of a polypeptide soybean protein composite fiber. Background technique [0002] Protein fibers are divided into natural protein fibers (such as wool, silk, etc.) and regenerated protein fibers. According to the source of raw materials, regenerated protein fiber can be divided into regenerated animal protein fiber and regenerated plant protein fiber. Regenerated animal protein fiber mainly refers to fiber spun from protein extracted from milk, wool, pig hair, etc. Regenerated plant protein mainly refers to fiber spun from protein extracted from corn, soybean, peanut, rapeseed, etc. [0003] At present, domestic and foreign studies have disclosed a lot of production processes about protein fibers, but most of them remain in theoretical discussions, and no products have been seen, and industrial production has not been realized. Such as the Chin...

AI Technical Summary

Problems solved by technology

[0004] Based on the currently disclosed protein fiber production technologies at home and abroad, the protein is basically dissolved, and then added to the traditional fiber production process for wet spinning. On the one hand, the dissolution of the protein will inevitably affect the inherent space of the protein. The structure of the cavity will affect the functionality of the finished fiber. On the other hand, the solidification process of the protein will introduce toxic and harmful substances such as formaldehyde or chromium salts, which will inevitably cause environmental pollution.

Furthermore, in the prior art, proteins with higher molecular weight are used. High molecular weight proteins have low biological activity and do not possess the unique activity, penetrating power, specificity and various physiological functions of regulating the human body. function of