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Mechanism of polymerization of methyl methacrylate by triphenylphosphine and Fe(III) complex in dimethyl sulphoxide

✍ Scribed by A. Dutta; P.K. Mahato; N.N. Dass

Publisher
Elsevier Science
Year
1991
Tongue
English
Weight
336 KB
Volume
27
Category
Article
ISSN
0014-3057

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✦ Synopsis

The triphenylphosphine (TPP) initiated polymerization of methyl methacrylate (MMA) in dimethyl sulphoxide (DMSO) has been studied. The polymerization was found to be solvent-sensitive and could be accelerated by Lewis acids like Fe 3÷ . Kinetic studies showed that the propagation was free radical in nature. The charge transfer complex formed between MMA and TPP in DMSO was thought to be responsible for the initiation of polymerization. From spectrophotometric studies and also from studies of the molecular weights of polymers, it has been concluded that a transition metal ion-activated dipole interaction between carbonyl oxygen and the phosphorus atom is responsible for the accelerated rate of polymerization.

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