Journal
CARBOHYDRATE POLYMERS
Volume 83, Issue 4, Pages 1929-1936Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2010.10.068
Keywords
Graft copolymers; Guar gum; N-Vinyl-2-Pyrrolidone; Thermal analysis; Sorption; Percent grafting
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Funding
- University Grants Commission, New Delhi [8-1(185)/2010]
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To develop low cost and environment friendly technologies for removal of metal ions from water systems, graft copolymers based on guar gum and poly(N-Vinyl-2-Pyrrolidone) were synthesized. The optimum reaction conditions were evaluated for grafting by varying nature and amount of solvent, change in concentration of monomer and initiator, reaction time and temperature. Graft copolymers were characterized by FTIR, SEM, XRD, thermal analysis and swelling studies. Sorption of Fe2+ and Cr6+ ions on graft copolymers was investigated as a function of percent grafting, change in metal ion concentration and temperature to define their end-uses in separation technologies. (C) 2010 Elsevier Ltd. All rights reserved.
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