Thermodynamic properties of an alternating copolymer of bicyclo[2.2.1]hepta-2,5-diene and carbon monoxide in a region from <Emphasis Type="Italic">T</Emphasis> → 0 to 550 K |
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Authors: | T A Bykova N N Smirnova T G Kulagina L V Nikishchenkova G P Belov E V Novikova |
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Institution: | (1) Research Institute of Chemistry, N. I. Lobachevsky Nizhny Novgorod State University, building 5, 23 prosp. Gagarina, 603950 Nizhny Novgorod, Russian Federation;(2) Institute of Problems of Chemical Physics, Russian Academy of Sciences, 142432 Chernogolovka, Moscow Region, Russian Federation |
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Abstract: | The temperature dependence of the heat capacity of an alternating copolymer of bicyclo2.2.1]hepta-2,5-diene and carbon monoxide
in the temperature range 6–550 K (with an error of 0.2–0.5% at 6–350 K and 0.5–1.5% at 330–550 K) was studied by the adiabatic
vacuum and dynamic calorimetry. Physical transformations of the copolymer in the studied temperature region were identified,
and their thermodynamic characteristics were determined. The combustion energy of the copolymer at 298.15 K was measured in
a calorimeter with a static bomb and isothermal jacket. The thermodynamic functions for a region of 0–550 K, enthalpy of combustion,
and thermodynamic parameters of copolymer formation from simple substances at T = 298.15 K and p = 101.325 kPa were calculated from the obtained experimental data. The new results and earlier published data were used for
the calculation of the thermodynamic characteristics of the alternate copolymerization of bicyclo2.2.1]hepta-2,5-diene and
CO under standard pressure for a region of 0–350 K for the bulk reaction.
Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 6, pp. 1483–1487, June, 2005. |
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Keywords: | copolymer of bicyclo[2 2 1]hepta-2 5-diene and carbon monoxide heat capacity enthalpy entropy Gibbs function calorimetry thermodynamics |
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