Polarized Light Microscopy Digital Image Gallery

Cuprammonium Rayon Fibers

Despite the luxurious qualities of cuprammonium rayon, the most commercially important variety of rayon is viscose rayon. This fiber, which was developed by a group of British scientists only a year after the cuprammonium type was first created, involves treating the cellulose with sodium hydroxide followed by carbon disulfide to create cellulose xanthate. This substance is then re-exposed to sodium hydroxide, in which it dissolves into a viscous fluid that can be forced through a spinneret. The strands that emerge are solidified by exposure to a coagulating bath. Viscose rayon is commonly found in a wide variety of clothing, often in blends, as well as in carpeting and other textiles for the home.