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A qualitative criterion proving the participation of comonomer complexes in the chain propagation of radical copolymerization
Author(s) -
Georgiev Georgi S.,
Christov Latchezar K.,
Koseva Nely S.,
Kamenska Elena B.,
Vasileva Elena D.
Publication year - 1998
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/(sici)1097-0126(199804)45:4<366::aid-pi945>3.0.co;2-7
Subject(s) - comonomer , copolymer , styrene , polymer chemistry , monomer , methyl methacrylate , chain (unit) , chain propagation , maleic anhydride , methacrylic acid , materials science , chemistry , organic chemistry , physics , polymer , astronomy
The juxtaposition of the equations for copolymer composition for chain propagation following the terminal (T), penultimate (P) and complex (C) mechanisms shows that the copolymer composition depends on the total co‐monomer concentration only when a comonomer complex participates in the pro‐pagation. This makes it possible to define an easily applicable criterion proving comonomer complex participation yet not excluding propagation according to the T and P mechanisms. The criterion has been tested for the copolymerization of 1‐vinyl‐2‐pyrrolidone with acrylic and methacrylic acids, and of styrene with maleic anhydride. It has been shown that such a dependence cannot be claimed for styrene–methyl methacrylate copolymerization. © 1998 SCI.