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Home  >  Journal list  >  Polymer Journal  >  Vol.15  No.9 (1983)  >  pp.673-681

Polymer Journal
<<Previous article Vol.15  No.9 (1983)   pp.673 - 681 Next article>>

Free-Radical Copolymerization II. Volume Contraction Factors for Some Copolymerization Systems. An Approach Based on Partial Specific Volume

Yung-Dae Ma1), Takeshi Fukuda1) and Hiroshi Inagaki1)
1) Institute for Chemical Research, Kyoto University

ABSTRACT:  In order to test the validity of previously developed formulas for the partial molar volume Vp0 of a 1—2 binary copolymer in a mixture of two solvents, density measurements were carried out on styrene–methyl methacrylate and p-chlorostyrene-methyl acrylate copolymers dissolved in the relevant monomer(s). The values of the six parameters necessary to compute Vp0 were determined for each system, and some comments have been made on the individual parameter values. The predicted values of Vp0 were in good agreement with those directly measured. Based on the results, numerical expressions for the volume contraction factors for the low-conversion copolymerizations of the two monomer pairs were derived.


Keyword:
Copolymers in Monomer Mixtures/ Partial Specific Volume/ Excess Volume of Mixing/ Excess Volume of Alternating-Bond Formation/ Contraction Factor/ Styrene–Methyl Methacrylate/ p-Chlorostyrene–Methyl Acrylate

Published online: March 03, 2006
© Copyright, 2006 by The Society of Polymer Science, Japan

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