A theoretical study of the temperature dependence of the thermal conductivity of polymers

The problem of heat conduction through polymers has been studied, considering phonons as the chief carriers of heat. The presence of intermediate-range order, the orientational mismatch among the macro molecules, and vacancy defects are identified as factors responsible for the scattering of phonons...

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Bibliographic Details
Published in:Physica scripta 1992-04, Vol.45 (4), p.399-401
Main Authors: Dashora, P, Saxena, N S, Saksena, M P, Bala, Kanan, Sachdev, K, Pradhan, P R, Ladiwala, G D
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
Organic polymers
Physicochemistry of polymers
Properties and characterization
Thermal and thermodynamic properties
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Summary:The problem of heat conduction through polymers has been studied, considering phonons as the chief carriers of heat. The presence of intermediate-range order, the orientational mismatch among the macro molecules, and vacancy defects are identified as factors responsible for the scattering of phonons. The relationships for the temperature dependence of the thermal conductivity have been developed for the temperature regions below and above the conductivity maximum. The predicted values of the thermal conductivities for Bakelite phenol formaldehyde and Ebonite rubber are in excellent agreement with the experimental results over a wide range of temperatures.
ISSN:1402-4896
0031-8949
1402-4896
DOI:10.1088/0031-8949/45/4/020