Heat capacity values for melts of polystyrene, poly(methyl methacrylate), polypropylene, and polyethylene are calculated on the assumption that the total constant‐volume heat capacity C v is made up of two parts: one associated with molecular vibrations, and one, with holes. Numerical values of both components are given for a wide range of temperatures and compared with experimental data. For poly‐1‐butene insufficient data for complete evaluation are available, so that only the vibrational contribution could be discussed.
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Bares et al. (1973) studied this question.
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