Abstract
Heat capacities at constant pressure and constant volume for the solid state are calculated from approximate vibrational spectra and compared with experimental data taken from a critical literature review. A total of 12 macromolecules are discussed: poly(isobutyl acrylate), poly(isobutyl methacrylate), poly(vinyl alcohol), poly(vinyl acetate), polyoxypropylene, poly[oxy-2,2-bis(chloromethyl)trimethylene], poly(vinyl benzoate), poly(vinyl p-ethylbenzoate), poly(vinyl p-isopropylbenzoate), poly(vinyl p-isopropylbenzoate), poly(vinyl p-t-butylbenzoate), polycyclopentene and cis-1,4-polyisoprene. The results are compared with prior approximations on about 70 other polymers. For poly(vinyl acetate) new ‘recommended data’ are presented. The influence of methyl groups on heat capacity is discussed.
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