ISSN:
0098-1273
Keywords:
Physics
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Physics
Notes:
A quantitative model for the pressure dependence of the thermal conductivity K in glassy polymers is presented. By extending the hole theory of liquids to temperatures below the glass transition temperature, an equation of state is obtained and an expression for the pressure dependence of the thermal conductivity is then formulated from a consideration of the anharmonicity associated with the segmental vibrations. The resulting equation ΔK/K = γGf0[1-exp(-p/B*)], where γG is the Grüneisen parameter, f0 is the fractional free volume, and B* = kTg/V0, is compared with experimental results for the poly(alkyl methacrylates).
Additional Material:
1 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/pol.1978.180160410
