Grafting of poly(acrylonitrile) onto guar gum using potassium persulfate/ascorbic acid redox initiating system

The grafting of poly(acrylonitrile) onto guar gum in aqueous medium initiated by the potassium presulfate/ascorbic acid redox system has been studied gravimetrically at the temperature of 35 + 0.2°C in the presence of atmospheric oxygen. A plausible mechanism of graft copolymerization has been sugge...

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Bibliographic Details
Published in:Journal of applied polymer science 1993-01, Vol.47 (4), p.717-722
Main Authors: Bajpai, U. D. N., Mishra, Veena, Rai, Sandeep
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
Natural polymers
Physicochemistry of polymers
Starch and polysaccharides
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Summary:The grafting of poly(acrylonitrile) onto guar gum in aqueous medium initiated by the potassium presulfate/ascorbic acid redox system has been studied gravimetrically at the temperature of 35 + 0.2°C in the presence of atmospheric oxygen. A plausible mechanism of graft copolymerization has been suggested on the basis of experimental results. The effect of grafting on the water and saline retention capacities has been studied and compared with the values obtained for ungrafted guar gum. © 1993 John Wiley & Sons, Inc.
ISSN:0021-8995
1097-4628
DOI:10.1002/app.1993.070470415