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4716043 
Journal Article 
Determination of the free volume and mobility of polymer chains in highly-permeable glassy polymers by the conformational probe method 
Remizov, AB; Kamalova, DI; Stolov, AA 
2005 
1 
Russian Journal of Physical Chemistry A, Focus on Chemistry
ISSN: 0036-0244
EISSN: 1531-863X 
79 
S76-S80 
WOS:000232604500014 
The behavior of probes with different sizes (1,2-bromofluoroethane, 1,2-dichloroethane, methyl dichlorophosphate, 1,1,2,2-tetrabromoethane, 1,2-di-p-bromophenylethane) was investigated in poly(methyl methacrylate) and poly(vinyl acetate). It was revealed that there is a linear correlation between the freezing temperatures of conformational transitions in probe molecules and the sizes of rotating probe fragments. The results obtained were used in analyzing the processes responsible for the freezing of conformational equilibria of probes in polymers as temperature decreases. The free-volume distribution in glassy polymers, such as poly(vinyltrimethylsilane) and poly(trimethylsilylpropyne), was studied using the conformational probe method.