Copper-containing non-woven materials from silk waste

Abstract

Abstract A rational approach to the problem of recycling natural silk processing waste is proposed. Cocooning wastes are processed into needle-punched non-woven material onto which copper nanoparticles are deposited by chemical reduction methods with ascorbic acid from alkaline solutions of copper sulfate. It was shown that, depending on the time of impregnation of the nonwoven material with an alkaline copper solution, sericin, wax and fatty substances are removed from the material, and when impregnated for more than 15 minutes, the amorphous part of fibroin. The amount of copper on the fibrous material can be varied by the conditions of impregnation and washing. The size distribution of copper nanoparticles on the finished material was studied.