Soybean cotton (soybean protein fiber) is not cotton.

Soybean cotton belongs to regenerated plant protein fiber, and its raw material is edible soybean protein powder. After using bioengineering technology, the globulin in the protein powder is extracted, and then functional additives are added, which are grafted, * * * polymerized and * * * mixed with polymers such as nitrile group and hydroxyl group to change the spatial structure of purified globulin.

Protein spinning solution with a certain concentration is made, and then it is made into single-fiber tow (1.27-3.3dtex) by wet spinning when it is ripe. Finally, it is curled, heat-set and cut to produce high-grade fibers for textiles with various lengths.