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Kinetics of electroinitiated polymerization of acrylonitrile mediated by titanium (III)–dimethylglyoxime redox system

✍ Scribed by B. S. Sherigara; M. P. Yashoda; Padmalatha

Publisher
John Wiley and Sons
Year
1999
Tongue
English
Weight
76 KB
Volume
12
Category
Article
ISSN
0894-3230

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✦ Synopsis

Acrylonitrile was polymerized in an aqueous sulphuric acid-methanol medium by an electrolytically generated mediator species, titanium(III). Titanium(III)-dimethylglyoxime was used as the initiator redox system. The reaction was confined to the cathode compartment and was found to proceed via a free radical mechanism. The kinetics of polymerization were investigated for different initial monomer concentrations, acid concentrations, electric currents, dielectric constants of the solvent and electrode materials. A suitable mechanism for titanium(III)dimethylglyoxime-mediated indirect electropolymerization of acrylonitrile is proposed.

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Redox polymerization: Kinetics of polymerization of acrylonitrile initiated by the system 2,2′-thiodiethanol/trichloroaquobipyridylmanganese(III) in dilute sulfuric acid
✍ Athipettah Jayakrishnan; Mahadevan Haragopal; Venkatanarayana Mahadevan 📂 Article 📅 1982 🏛 John Wiley and Sons 🌐 English ⚖ 460 KB 👁 1 views

The kinetics of polymerization of acrylonitrile and methyl methacrylate initiated by the redox system 2,2'-thiodiethanol/trichloroaquobipyridylmanganese(III) have been investigated in the temperature range 20-35OC in dilute sulfuric acid. The oxidation of the substrate in the absence of monomer has