Polymerization of vinyl monomers. II. Ceric-formaldehyde redox system

Santappa, M. ; Ananthanarayanan, V. S. (1965) Polymerization of vinyl monomers. II. Ceric-formaldehyde redox system Proceedings of the Indian Academy of Sciences, Section A, 62 (3). pp. 150-158. ISSN 0370-0089

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Official URL: http://www.ias.ac.in/j_archive/proca/62/1/56-66/vi...

Related URL: http://dx.doi.org/10.1007/BF03047469


The kinetics of the polymerization of methyl acrylate initiated by the ceric perchlorate-formaldehyde redox system has been investigated. The rate of monomer disappearance has been found to be proportional to (a) the square of the monomer concentration, (b) the formaldehyde concentration and (c) the reciprocal of ceric ion concentration. The rate of ceric disappearance is found to be proportional to the ceric, monomer and formaldehyde concentrations. The chain-lengths have been found to increase with the monomer concentration and decrease with the ceric ion concentration. A kinetic scheme has been proposed whereby both ceric ions and the radicals produced from oxidation of formaldehyde by ceric ions have been shown to initiate the polmerization, while the termination occurs exclusively by the interaction of the chain radicals with ceric ions. The results obtained in the presence as well as absence of the reducing agent have been compared on the basis of the above kinetic scheme.

Item Type:Article
Source:Copyright of this article belongs to Indian Academy of Sciences.
ID Code:43393
Deposited On:11 Jun 2011 10:23
Last Modified:18 May 2016 00:24

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