Kinetics of deformation and intermolecular interaction in glassy polymers

The kinetic parameters for flow have been determined for a number of glassy polymers as a function of the temperature of deformation, the mechanical and thermal history and the magnitude of the intermolecular interaction. It has been shown that the activation energy Q 0 and the activation volume for...

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Bibliographic Details
Published in:Polymer science USSR 1980, Vol.22 (10), p.2462-2471
Main Authors: Bershtein, V.A, Peschanskaya, N.N, Stepanov, V.A
Format: Article
Language:English
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Summary:The kinetic parameters for flow have been determined for a number of glassy polymers as a function of the temperature of deformation, the mechanical and thermal history and the magnitude of the intermolecular interaction. It has been shown that the activation energy Q 0 and the activation volume for deformation, α, decrease with a decrease in temperature and also as a result of preliminary deformation and quenching. The “elementary” energy barrier q i = Q 0 V/ α related to a single monomeric link of volume V changes only slightly and agrees with independently assessed characteristics for the energy of intermolecular interaction. It has been found that in a certain temperature range (Close to and below the region of the β-transition), the value of α agrees with the volume of the equilibrium Kuhn segment.
ISSN:0032-3950
1878-268X
DOI:10.1016/0032-3950(80)90150-1