Abstract
A study was made of the dependence of glass temperature of polymers determined by inverse gas chromatography on the dimensions of n-paraffin molecules used as samples. It was found for three polymers (polymethyl methacrylate, polycarbonate and polysulphone) that starting from a certain length of n-paraffin molecules the addition of each methylene group results in a linear increase of glass temperature, determined by inverse gas chromatography. The specific increase of glass temperature depends on the type of polymer. Results are treated within the framework of the theory of free volume.
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