Abstract
AbstractA kinetic study on the polymerization of methyl methacrylate (MMA) was made in the presence of cellulose triacetate (CTA) and water. In this case, water was found to be not necessary for the initiation of polymerization. The reaction proceeds by a radical mechanism, and the rate of polymerization can be expressed by the following equation: The overall activation energy for the polymerization was estimated as 7.9 kcal/mole. The grafting efficiency of polymethyl methacrylate (PMMA) to CTA decreased with increase in polymerization temperature. The molecular weight of the extracted PMMA decreased also slightly with increase in polymerization temperature and was independent on the concentration of CTA. These results suggest that the molecular weight of PMMA is mainly affected by the transfer of growing radical to monomer molecule.
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