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.
189 1 year, the cellulose was decomposed by strong alkali and carbon disulfide in Britain, and then viscose rayon was spun in the spinning box under the action of centrifugal force. It was safe and cheap, and soon became popular. This is the most widely used method to produce man-made fibers.
Chemical fiber classification:
Chemical fiber is usually made of natural or synthetic polymers or inorganic substances into spinning melt or solution, then filtered, metered, extruded from spinneret (plate) into liquid trickle, and then solidified to form fiber.
Chemical fibers can be divided into regenerated fibers and synthetic fibers according to the classification of raw materials. The recycled fiber is a fiber made of natural polymer compounds through chemical treatment and mechanical processing, and its chemical composition is basically the same as that of the original polymer. There are mainly regenerated cellulose fibers and regenerated protein fibers.
Synthetic fiber is a fiber made from natural low molecular compounds such as petroleum, coal, natural gas and some agricultural and sideline products through a series of chemical reactions to synthesize high molecular compounds, and then processed.
Baidu encyclopedia-artificial fiber