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Temperature dependence of the thermal expansivity in polymer
Author(s) -
Cho Bongkee
Publication year - 1985
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760251804
Subject(s) - materials science , polymer , atmospheric temperature range , glass transition , thermal , amorphous solid , thermodynamics , thermal expansion , composite material , organic chemistry , chemistry , physics
The effects of temperature on the specific volumes and thermal expansivities for a range of amorphous polymers, above and below the glass transition temperature, are treated on the basis of the physical properties of polymers. The results are found to be in good agreement with observed data. The analysis of the results shows that the temperature derivative of the zeropressure thermal expansivity of the liquid polymer increases with increasing temperature. The change in the thermal expansivity, Δα = α OL − α OG , decreases with increasing temperature.