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Saponification of wheat straw‐ g ‐polyacrylonitrile
Author(s) -
Fanta G. F.,
Burr R. C.,
Doane W. M.
Publication year - 1987
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1987.070330319
Subject(s) - saponification , hemicellulose , polyacrylonitrile , cellulose , lignin , sodium hydroxide , chemistry , straw , hydrolysis , organic chemistry , polymer , polymer chemistry , nuclear chemistry , inorganic chemistry
Wheat straw‐ g ‐polyacrylonitrile (PAN), containing 40% PAN, was saponified with sodium hydroxide and isolated under three sets of saponification 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 H 2 O/g polymer). Treatment of these fractions with the enzyme cellulase converted 55–62% of the total cellulose of glucose.