Grafting of polyacrylamide on to guar gum with the redox system potassium bromate/thiomalic acid

The kinetics of graft copolymerization of polyacrylamide on to a natural polysaccharide guar gum have been studied in aqueous medium at 35 ± 0.2°C. Chemical initiation, using a water‐soluble redox system, potassium bromate/thiomalic acid, was used. This redox pair works in the presence of oxygen and...

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Bibliographic Details
Published in:Polymer international 1993, Vol.31 (1), p.1-7
Main Authors: Bajpai, U. D. N., Jain, Alka
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
graft copolymerization
guar gum
Natural polymers
Physicochemistry of polymers
polyacrylamide
redox system
Starch and polysaccharides
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Summary:The kinetics of graft copolymerization of polyacrylamide on to a natural polysaccharide guar gum have been studied in aqueous medium at 35 ± 0.2°C. Chemical initiation, using a water‐soluble redox system, potassium bromate/thiomalic acid, was used. This redox pair works in the presence of oxygen and thus makes the whole system cost‐effective. A plausible mechanism of graft copolymerization has been suggested on the basis of the experimental results obtained by varying the parameters.
ISSN:0959-8103
1097-0126
DOI:10.1002/pi.4990310102