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Grafting of polyacrylamide on to guar gum using K 2 S 2 O 8 ascorbic acid redox system
Author(s) -
Bajpai U. D. N.,
Jain Alka,
Rai Sandeep
Publication year - 1990
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.1990.070391101
Subject(s) - grafting , ascorbic acid , guar gum , polyacrylamide , persulfate , acrylamide , redox , guar , potassium persulfate , chemistry , aqueous solution , polymer chemistry , nuclear chemistry , polymerization , inorganic chemistry , monomer , biochemistry , organic chemistry , polymer , food science , catalysis
The grafting of polyacrylamide on to guar gum in aqueous medium initiated by the potassium persulfate/ascorbic acid redox system has been studied gravimetrically at the temperature 35 ± 0.2°C in the presence of atmospheric oxygen and Ag + ions. The rate of grafting was found to increase with temperature, concentration of redox components, acrylamide, and guar gum. But at higher concentration of guar gum, the rate of grafting was found to decrease. A mechanism for grafting and suitable rate expression have been suggested.