Phase and structural transformations of liquid-crystalline polymer systems in the mechanical field / Vshivkov S. A.,Rusinova E. V. // POLYMER SCIENCE SERIES A. - 2008. - V. 50, l. 2. - P. 135-141.

ISSN/EISSN:

0965-545X / нет данных

Type:

Article; Proceedings Paper

Abstract:

Phase LC transitions and the structure of blends based on cyanoethyl cellulose with DMA and DMF, poly-(gamma-benzyl-L-glutamate) with DMF, and hydroxypropyl cellulose with ethanol, acetic acid, DMA, DMF, and water have been studied under static conditions and in a mechanical field. With decreasing molecular mass of the polymer, the boundary curves separating isotropic from anisotropic solutions are shifted to higher concentrations and lower temperatures, in agreement with the Flory theory. When solutions are deformed, the cholesteric type of liquid crystals is transformed into the nematic type; this process is accompanied by the formation of domains in solutions, and the corresponding temperature-concentration boundaries of the LC phases are changed. As the molecular mass of the polymer increases, the ability of macromolecules to orient under the shear field decreases.

Author keywords:

HYDROXYPROPYL CELLULOSE SOLUTIONS; AQUEOUS-SOLUTIONS; WATER; BEHAVIOR; TEMPERATURES; SEPARATION; TRANSPORT; DIAGRAM

DOI:

10.1134/S0965545X08020065

Web of Science ID:

ISI:000253996400006

Соавторы в МНС:

Другие поля

Поле	Значение
Month	FEB
Note	4th All-Russia Kargin Conference on Polymer Science in the 21st Century, Moscow State Univ, Moscow, RUSSIA, JAN 29-FEB 02, 2007
Organization	Russian Acad Sci; Moscow State Univ; Russian Fdn Basic Res
Publisher	MAIK NAUKA/INTERPERIODICA/SPRINGER
Address	233 SPRING ST, NEW YORK, NY 10013-1578 USA
Language	English
Keywords-Plus	HYDROXYPROPYL CELLULOSE SOLUTIONS; AQUEOUS-SOLUTIONS; WATER; BEHAVIOR; TEMPERATURES; SEPARATION; TRANSPORT; DIAGRAM
Research-Areas	Polymer Science
Web-of-Science-Categories	Polymer Science
Author-Email	sergey.vshivkov@usu.ru
Number-of-Cited-References	35
Usage-Count-Since-2013	5
Journal-ISO	Polym. Sci. Ser. A
Doc-Delivery-Number	274JA