Thermodynamics of alternating copolymer of ethylene and carbon monoxide in the 0–600 K region |
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Authors: | B. V. Lebedev K. B. Zhogova Ya. V. Denisova G. P. Belov O. N. Golodkov |
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Affiliation: | (1) Institute of Chemistry, Nizhnii Novgorod State University, 23 prosp. Gagarina, 603600 Nizhnii Novgorod, Russian Federation;(2) Institute of Chemical Physics in Chernogolovka, Russian Academy of Sciences, 142432 Chernogolovka, Moscow Region, Russian Federation |
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Abstract: | The temperature dependence of the heat capacity of the alternating copolymer (ACP) of carbon monoxide with ethylene was studied, and temperatures and enthalpies of its phase transformations were measured by adiabatic vacuum, dynamic, and isothermal calorimetry in the temperature range from 8 to 600 K. The energy of burning of ACP was measured at 298.15 K in a calorimeter with the static bomb and isothermal shell. The thermodynamic parameters of transformation of the α-form of ACP crystals into the β-form and fusion of the β-form were determined. The thermodynamic functions for the 0–507 K range and thermodynamic characteristics atT=298.15 K andp=101.325 kPa were calculated. The thermodynamic parameters of the alternating copolymerization of ethylene and CO at 0–507 K and standard pressure were calculated for the bulk reaction. Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 2, pp. 284–288, February, 1998. |
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Keywords: | copolymer of ethylene and carbon monoxide heat capacity thermodynamic functions copolymerization enthalpy entropy Gibbs function |
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