Man-made fiber is a kind of chemical fiber, which is made of natural polymer materials through chemical treatment and mechanical processing. According to the shape and use of man-made fiber, it can be divided into rayon, rayon and rayon. The main varieties are viscose fiber, acetate fiber and cuprammonia fiber.
1884, the famous French chemist Sialden put nitrocellulose into alcohol and ether to make slender and beautiful rayon. 189 1 year began mass production. 1890, Germans Brenne and Flamel dissolved cellulose in cuprammonia solution to make cuprammonia rayon, and obtained the invention patent. So Hyatt didn't invent man-made fibers.
Classification of man-made fibers
Man-made fiber can be divided into three types according to chemical composition: regenerated cellulose fiber, cellulose ester fiber and regenerated protein fiber. Regenerated cellulose fibers are made from agricultural and forestry products containing cellulose, such as wood and cotton linters. The chemical composition of the fiber is the same as the raw material, but the physical structure has changed.
Cellulose ester fiber is also made of cellulose, and the chemical composition of the fiber is different from that of the raw material. The raw materials of regenerated protein fiber are protein such as corn, soybean, peanut and cow cheese. The following are some major man-made fibers.