Vinyl polymerisation of acrylonitrile by the vanadium(V)-glycerol redox system

Rout, Anuradha ; Singh, Baishnab C. ; Santappa, M. (1976) Vinyl polymerisation of acrylonitrile by the vanadium(V)-glycerol redox system Die Makromolekulare Chemie, 177 (9). pp. 2709-2719. ISSN 0025-116X

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Official URL: http://onlinelibrary.wiley.com/doi/10.1002/macp.19...

Related URL: http://dx.doi.org/10.1002/macp.1976.021770913

Abstract

A kinetic study of the thermal polymerisation of acrylonitrile initiated by the redox system V5+ -glycerol in sulfuric acid and perchloric acid was made in the temperature range 35-45°C. The rates of polymerisation and V5+ disappearance wee measured with respect to their dependence on time, monomer, metal ion, glycerol, acid, and ionic strength. Experimental evidences provide support to a mechanism involving initiation by a free radical produced by the decomposition of the acyclic complex between V5+ and glycerol. The kinetics are consistent with a linear termination of polymerisation (1st order in respect of growing radicals) at higher concentration of V5+. The various rate and activation parameters were evaluated and an appropriate reaction scheme is proposed. The induction period and the polymerisation rate of the V5+-glycerol system were compared with those involving polyhydroxy alcohol systems such as sorbitol and mannitol.

Item Type:Article
Source:Copyright of this article belongs to Huthig & Wepf Verlag, Basel.
ID Code:43336
Deposited On:11 Jun 2011 08:00
Last Modified:11 Jun 2011 08:00

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