Grafting of acrylamide onto guar gum using KMNO4/oxalic acid redox system

The grafting of acrylamide onto guar gum in aqueous medium initiated by KMnO4/oxalic acid redox system has been studied gravimetrically at the temperature 35 ± 0.2°C. The effect of redox components, acrylamide concentration and quantity of guar gum has been studied in terms of percentage and efficie...

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Bibliographic Details
Published in:Journal of applied polymer science 1988-04, Vol.35 (5), p.1169-1182
Main Authors: Bajpai, U. D. N., Rai, Sandeep
Format: Article
Language:English
Subjects:
Applied sciences
Chemical modifications
Chemical reactions and properties
Exact sciences and technology
Organic polymers
Physicochemistry of polymers
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Summary:The grafting of acrylamide onto guar gum in aqueous medium initiated by KMnO4/oxalic acid redox system has been studied gravimetrically at the temperature 35 ± 0.2°C. The effect of redox components, acrylamide concentration and quantity of guar gum has been studied in terms of percentage and efficiency of grafting. A plausible mechanism of grafting and a suitable rate expression has been suggested. The rate of grafting was found to increase with increase in temperature and concentrations of redox components and acrylamide, but, at high concentration of guar gum, the rate was found to decrease.
ISSN:0021-8995
1097-4628
DOI:10.1002/app.1988.070350504