The effect of the glassy state of a polymer on the thermodynamic functions of its mixing with a solvent / Safronov AP,Adamova LV // POLYMER SCIENCE SERIES A. - 2002. - V. 44, l. 4. - P. 408-416.

ISSN/EISSN:

0965-545X / нет данных

Type:

Article

Abstract:

The effect of the glassy state of a polymer on the thermodynamic functions of its mixing with a solvent is studied. The concentration dependences of the enthalpy, Gibbs energy, and entropy of mixing are determined for polystyrene solutions in cyclohexane, ethylbenzene, and chloroform over the entire composition range. It is shown that the enthalpy and entropy of mixing are negative and the Gibbs energy of mixing is close to combinatorial irrespective of the solvent quality. A semi-empirical statistical model based on the concept of a loose metastable structure of polymeric glass is proposed, and the theoretical expressions for the contribution of the glassy state to all the thermodynamic functions of mixing are derived. The specific features are theoretically described for the behavior of the enthalpy, entropy, and Gibbs energy of mixing; sorption isotherms; the change in the partial entropy of the solvent; and the concentration dependence of the Flory-Huggins interaction parameter in solutions of polymeric glasses.

Author keywords:

нет данных

DOI:

нет данных

Web of Science ID:

ISI:000175464800012

Соавторы в МНС:

Другие поля

Поле	Значение
Month	APR
Publisher	INTERPERIODICA
Address	PO BOX 1831, BIRMINGHAM, AL 35201-1831 USA
Language	English
Research-Areas	Polymer Science
Web-of-Science-Categories	Polymer Science
Number-of-Cited-References	30
Usage-Count-Since-2013	2
Journal-ISO	Polym. Sci. Ser. A
Doc-Delivery-Number	549UH