Thermodynamics of liquid-crystalline solutions of hydroxypropyl cellulose in water and ethanol / Vshivkov S. A.,Adamova L. V.,Rusinova E. V.,Safronov A. P.,Dreval' V. E.,Galyas A. G. // POLYMER SCIENCE SERIES A. - 2007. - V. 49, l. 5. - P. 578-583.

ISSN/EISSN:

0965-545X / нет данных

Type:

Article

Abstract:

Phase diagrams were constructed and comprehensive thermodynamic analysis was performed for hydroxypropyl cellulose-water and hydroxypropyl cellulose-ethanol systems with the use of the static sorption, calorimetry, cloud-point, polarization microscopy, and X-ray diffraction analysis techniques and the measurement of transmitted polarized light intensity. The concentration dependences of the enthalpy, entropy, and Gibbs energy of the formation of liquid-crystalline phases in the systems were determined. It was found that the formation of liquid-crystalline solutions of hydroxypropyl cellulose in water is associated with the energy term of interaction between the components and that in ethanol solutions is due to changes in combinatorial entropy.

Author keywords:

AQUEOUS-SOLUTIONS; (HYDROXYPROPYL)CELLULOSE; POLYMERS

DOI:

10.1134/S0965545X07050124

Web of Science ID:

ISI:000247269600012

Соавторы в МНС:

Другие поля

Поле	Значение
Month	MAY
Publisher	MAIK NAUKA/INTERPERIODICA/SPRINGER
Address	233 SPRING ST, NEW YORK, NY 10013-1578 USA
Language	English
Keywords-Plus	AQUEOUS-SOLUTIONS; (HYDROXYPROPYL)CELLULOSE; POLYMERS
Research-Areas	Polymer Science
Web-of-Science-Categories	Polymer Science
Author-Email	sergey.vshivkov@usu.ru
Number-of-Cited-References	23
Usage-Count-Since-2013	16
Journal-ISO	Polym. Sci. Ser. A
Doc-Delivery-Number	179DN