Graft copolymerization of 2-hydroxyethyl methacrylate and methyl methacrylate onto hide powder |
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Authors: | S. Amudeswari C. Rami Reddy K. Thomas Joseph |
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Affiliation: | Polymer Division, Central Leather Research Institute, Adyar, Madras 600020, India |
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Abstract: | Graft copolymerization of 2-hydroxyethyl methacrylate(HEMA) and mixtures of HEMA with methyl methacrylate (MMA) onto hide powder was attempted using ceric ammonium nitrate as initiator, with a view to optimize the conditions for graft copolymerization. Percent grafting and grafting efficiency were calculated for various variables such as monomer concentration, initator concentration and mole ratio of HEMA to MMA. Rp, Rg and Rh (rates of polymerization, grafting and homopolymerization respectively) were also evaluated. It was observed that Rp increased linearly with increasing concentration of MMA except at very low concentrations of the monomer. An explanation is given for the effect of variables on extent of grafting and grafting efficiency. |
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