Thermodynamics of dissolution of glassy polymers / Safronov AP,Adamova LV // POLYMER. - 2002. - V. 43, l. 9. - P. 2653-2662.

ISSN/EISSN:

0032-3861 / нет данных

Type:

Article

Abstract:

A parametric semi-empirical thermodynamic theory for the dissolution of glassy polymers in liquids is formulated based on the experimental results on Gibbs energy, enthalpy and entropy of mixing in isothermal conditions for a large number of systems. The values of these thermodynamic functions include the contribution from the glassy structure of the polymer, which depends on the volume fraction of metastable voids, the cohesion energy of polymer, and the entropy depression parameter. The glassy-state contribution to the enthalpy and entropy of mixing is large and negative, which provides sufficient difference from the same functions for the elastic polymers. However, this also leads to the enthalpy/entropy compensation, and the values of Gibbs energy of mixing only weakly depend on the glassy nature of the polymer. The theory is shown to provide adequate explanation for all specific features of the concentration dependences of different thermodynamic functions found in experiment at constant temperature. The parameters of the model are tabulated for a large variety of solutions of polymer glasses. (C) 2002 Published by Elsevier Science Ltd.

Author keywords:

dissolution of glassy polymers; enthalpy; entropy STRUCTURAL RELAXATION; ENTHALPY RELAXATION

DOI:

10.1016/S0032-3861(02)00050-2

Web of Science ID:

ISI:000174631600009

Соавторы в МНС:

Другие поля

Поле	Значение
Month	APR
Publisher	ELSEVIER SCI LTD
Address	THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
Language	English
Article-Number	PII S0032-3861(02)00050-2
Keywords-Plus	STRUCTURAL RELAXATION; ENTHALPY RELAXATION
Research-Areas	Polymer Science
Web-of-Science-Categories	Polymer Science
Number-of-Cited-References	29
Usage-Count-Since-2013	2
Journal-ISO	Polymer
Doc-Delivery-Number	535EE