Grafting of polyacrylamide on to guar gum using K2S2O8 ascorbic acid redox system

Grafting of polyacrylamide on to guar gum using K2S2O8 ascorbic acid redox system

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 temperat...

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Veröffentlicht in:Journal of applied polymer science 1990-06, Vol.39 (11-12), p.2187-2204
Hauptverfasser: Bajpai, U. D. N., Jain, Alka, Rai, Sandeep
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Sprache:eng
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Applied sciences
Exact sciences and technology
Organic polymers
Physicochemistry of polymers
Preparation, kinetics, thermodynamics, mechanism and catalysts
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container_issue 11-12
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container_title Journal of applied polymer science
container_volume 39
creator Bajpai, U. D. N.
Jain, Alka
Rai, Sandeep
description 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.
doi_str_mv 10.1002/app.1990.070391101
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N. ; Jain, Alka ; Rai, Sandeep</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-i2741-b2aa80d4b2d192e8ad2a619ef1821a3b9382d863cd7496cf71e021bf2ad237f13</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1990</creationdate><topic>Applied sciences</topic><topic>Exact sciences and technology</topic><topic>Organic polymers</topic><topic>Physicochemistry of polymers</topic><topic>Preparation, kinetics, thermodynamics, mechanism and catalysts</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Bajpai, U. D. N.</creatorcontrib><creatorcontrib>Jain, Alka</creatorcontrib><creatorcontrib>Rai, Sandeep</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><jtitle>Journal of applied polymer science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Bajpai, U. D. 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subjects Applied sciences
Exact sciences and technology
Organic polymers
Physicochemistry of polymers
Preparation, kinetics, thermodynamics, mechanism and catalysts
title Grafting of polyacrylamide on to guar gum using K2S2O8 ascorbic acid redox system
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