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Graft copolymerization of acrylonitrile onto cotton cellulose by potassium permanganate–thioacetamide redox system
Author(s) -
Eromosele Ighodalo Clement
Publication year - 1994
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.1994.070511016
Subject(s) - acrylonitrile , potassium permanganate , thioacetamide , copolymer , yield (engineering) , chemistry , polymer chemistry , cellulose , nuclear chemistry , permanganate , redox , aqueous solution , inorganic chemistry , materials science , organic chemistry , polymer , biochemistry , composite material
The graft copolymerization of acrylonitrile onto cotton, initiated by the KMnO 4 –thioacet‐amide redox system in an aqueous medium, has been investigated. The percentage graft yield was determined by varying the concentrations of KMnO 4 , acrylonitrile, thioacetamide, and temperature. The percentage graft yield increased initially and then decreased with increasing concentrations of KMnO 4 and thioacetamide, with an optimum yield not greater than 21%. The percentage graft yield, however, was greatly enhanced with a value of up to 66% as the concentration of acrylonitrile was increased. The percentage graft yield increased with temperature in the range of 35–70°C with a calculated activation energy of 8.33 Kcal/mol. The effects of solvents and amines on the percentage graft yield were also investigated. © 1994 John Wiley & Sons, Inc.