Graft polymerization of methyl methacrylate onto guar gum in presence of ammonium vanadate and hydrogen peroxide

Abstract

The grafting of poly (methyl methacrylate) onto guar gum (GG) by ammonium mono vanadate (AMV) was studied as a function of H2O2/AMV mole ratio, GG/monomer weight ratio, sulfuric acid concentration, reaction time and temperature. The presence of hydrogen peroxide at 2N H-2SO 4 improves the grafting efficiency of vanadium(V). The optimum time and temperature of the grafting reaction was found to be 3.5 h and 50°C. Infrared spectroscopy was used for the confirmation of grafting. The thermal stability and physical property of the grafted polymer were evaluated. A reaction scheme has been suggested to elucidate the role of AMV and hydrogen peroxide. © MD Publications Pvt. Ltd.

Publication Title

Journal of Polymer Materials

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