Soybean protein/alginate /cellulose fibre and preparation method thereof

Abstract

The invention discloses a soybean protein / alginate / cellulose fiber and a preparation method thereof. In order to obtain a spinning stock solution by using a soybean protein solution, an alginate solution and a high-viscosity cellulose solution, a multi-stage coagulation bath is used for each The two components are molded separately to obtain fibers in which soybean protein accounts for 15-60% of the total weight of the three components, alginate accounts for 3-8% of the total weight of the three components, and cellulose accounts for 32-82% of the total weight of the three components. All levels of coagulation baths in the present invention adopt zinc-free forming technology, which avoids protein denaturation caused by heavy metal salts and environmental pollution caused by zinc salts, reduces environmental hazards in the fiber production process, and the main distribution of protein and alginic acid in the prepared fibers is In the outer layer of the fiber, the fiber made can give full play to the health-care properties of protein and alginic acid. It not only has high protein content, good health-care properties, but also has good water-absorbing and salt-absorbing properties, and good processing performance.

Description

technical field [0001] The invention relates to a composite fiber made of protein, alginate and cellulose and a preparation method thereof, belonging to the technical field of new chemical fiber materials. technical background [0002] The raw material of cellulose fiber comes from natural and renewable cellulose. Under the background of increasingly tense petroleum resources, cellulose fiber shows vigorous development vitality. Soybean protein fiber contains a variety of amino acids, which have a certain health care effect on the human body. And its fabric has a silk fabric style, which is widely welcomed in the market at present, and alginate (mainly composed of calcium alginate, and also contains a small amount of alginic acid and sodium salt) is a natural polymer mixture, which can Wet spun into fibers, and the calcium ions in the fibers can ion-exchange with the sodium ions in human wound secretions to form a wet gel at the affected mouth, forming a wet wound healing en...

AI Technical Summary

Problems solved by technology

Due to the completely different particularities of the three materials, at present, people mostly use one of the above three materials to produce fibers or use two kinds of materials to produce functional mixed fibers, but the existing production contains protein in soybean protein fibers. The content is generally low, so that the health care effect of the composite fiber is limited to a certain extent, and if the protein content in the composite fiber is increased, the physical performance index of the composite fiber will drop significantly, which will greatly affect the subsequent fiber processing procedures. Moreover, the coagulation baths currently used in the spinning and forming of the spinning dope all contain zinc sulfate, and the zinc ions in it not only cause serious pollution to the environment, but also have a denaturing effect on the protein, affecting the performance of soybean protein and reducing The performance of soybean protein and cellulose composite fiber

At the same time, due to the different components of the coagulation bath required by the different components in the spinning dope, it is difficult to adapt to the molding requirements of multiple components by using the conventional one-bath method. However, if too many components are added to the coagulation bath, it will cause coagulation. Difficulties in processes such as bath evaporation and crystallization affect the normal cycle production operation

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