Vinyl polymerization by Ziegler catalysts |
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Authors: | H. Kothandaraman K. Venkatarao L. Ravi Kumar K. Palanivelu |
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Affiliation: | (1) Department of Polymer Science, University of Madras, Guindy Campus, 600 025 Madras, India |
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Abstract: | Summary Methylmethacrylate and styrene were polymerized with Co(acac)3-AlEt2 Br catalyst system in benzene at 40°C. Rate of polymerization is linear to monomer concentrations. Maximum percent conversion of polymer was obtained when Al/Co2 with styrene and Al/Co3 with methylmethacrylate. With increase in aging time catalytic activity decreases. Activation energy was found to be 60 KJ mol–1. with styrene and 40 KJ mol–1. with methylmethacrylate.The authors arc thankful to the UGC, INDIA for the financial support. |
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