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Thermodynamic Studies of Solid Polyethers. II. Heat Capacity of Poly(oxacyclobutane), –[–(CH2)3O–]–n, between 1.4 and 330°K

Polymer Journal volume 5, pages 11–24 (1973)Cite this article

Abstract

Heat capacities of poly(oxacyclobutane), subject to three kinds of thermal history, were measured in the temperature region from liquid helium temperature (1.4°K) to 330°K by using two kinds of adiabatic calorimeters and the effect of thermal treatment upon heat capacity was studied. As a result, it was found that the effect of thermal treatment was evident in the low temperature region (below 15°K) as well as around the glass transition region.Furthermore, the heat capacity of the completely crystalline state was estimated and analysed, based on Tarasov’s model, between 13 and 250°K. Characteristic temperatures θ1 and θ3 in Tarasov’s model were evaluated to be 605 and 97°K, respectively. Below 13°K, the temperature dependence of the heat capacity was examined for crystalline, semicrystalline, and glassy states.

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Authors and Affiliations

  1. Department of Chemistry, Faculty of Science, Osaka University,

    Shohei Yoshida, Hiroshi Suga & Syûzô Seki

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  1. Shohei Yoshida
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  2. Hiroshi Suga
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  3. Syûzô Seki
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Yoshida, S., Suga, H. & Seki, S. Thermodynamic Studies of Solid Polyethers. II. Heat Capacity of Poly(oxacyclobutane), –[–(CH2)3O–]–n, between 1.4 and 330°K. Polym J 5, 11–24 (1973). https://doi.org/10.1295/polymj.5.11

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