Rheological study of the mechanism of gel-effect in radical polymerization of butyl methacrylate in bulk

Dependences were derived of maximum Newtonian viscosity η 0 and the initial modulus of high-elasticity G 0 of reaction systems on the degree of transformation q during radical polymerization in bulk of butyl methacrylate. A correlation was found between boundaries of linear sections of dependences o...

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Bibliographic Details
Published in:Polymer science USSR 1983, Vol.25 (11), p.2826-2831
Main Authors: Korolev, B.A., Lachinov, M.B., Dreval', V.Ye, Zubov, V.P., Vinogradov, G.V., Kabanov, V.A.
Format: Article
Language:English
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Summary:Dependences were derived of maximum Newtonian viscosity η 0 and the initial modulus of high-elasticity G 0 of reaction systems on the degree of transformation q during radical polymerization in bulk of butyl methacrylate. A correlation was found between boundaries of linear sections of dependences of log η 0-log q and boundaries of the transitional range on kinetic curves of polymerization. Comparison of typical degrees of conversion determined by rheological and kinetic methods with boundaries of transition from dilute to concentrated polymer solutions in the monomer and results of measuring G 0 enabled us to establish that the start of the gel-effect is due to the formation of the so-called “linkage network” in the solution.
ISSN:0032-3950
1878-268X
DOI:10.1016/0032-3950(83)90363-5