Saponification of Wheat Straw-g- Polyacrylonitrile
نویسنده
چکیده
Wheat straw-g-polyacrylonitrile (PAN), containing 40% PAN, was saponified with sodium hydroxide and isolated under three sets ofsaponification and work-up conditions. Each reaction mixture was separated into a water-soluble and a water-insoluble fraction, which were individually analyzed for percentages (by weight) of synthetic polymer (saponified PAN), cellulose, hemicellulose, and lignin. Water solubles amounted to 14-24% of the total product and contained 70-74% synthetic polymer, the remainder being hemicellulose and lignin. Although water-insoluble fractions contained 52-54% saponified PAN, their water absorbencies were low (14-17 g H20/g polymer). Treatment ofthese fractions with the enzyme cellulase converted 55-62% of the total cellulose to glucose.
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