Diffusion behaviour of Na-22 in the poly(ethylene oxide) poly(vinyl acetate) system / Animitsa IE,Volosentseva LI,Zhukovsky VM // SOLID STATE IONICS. - 1999. - V. 119, l. 1-4. - P. 245-249.

ISSN/EISSN:

0167-2738 / нет данных

Type:

Article; Proceedings Paper

Abstract:

In this work the diffusion of sodium-22 was studied in the PEO-PVAc films by means of an autoradiography technique. It is found that the addition of the amorphous PVAc (up to 20 mol.\%) increases the effective diffusion coefficients of Na-22 more than one order of magnitude at ambient temperatures. The enhancement is accompanied by a decrease in activation energy. The addition of PVAc increases the disordered amorphous surface layer of the spherulites where the diffusion process occurs at an enhanced rate. With further increasing of PVAc content the distance between large PEO spherulites increases, consequently the share of disordered amorphous regions decreases and the diffusion length of migration changes. It leads to decrease in the diffusion coefficients. (C) 1999 Published by Elsevier Science BSI. All rights reserved.

Author keywords:

poly(ethylene oxide); diffusion; morphology POLYMERIC ELECTROLYTES; BLENDS; CONDUCTIVITY

DOI:

10.1016/S0167-2738(98)00510-4

Web of Science ID:

ISI:000079859900038

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	APR
Note	5th International Symposium on Systems with Fast Ionic Transport, WARSAW, POLAND, APR 21-25, 1998
Organization	State Comm Sci Res; Batory Fdn; Polish Phys Soc; ECO Chemie BV; Solartron; TA Instruments GmbH
Publisher	ELSEVIER SCIENCE BV
Address	PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Language	English
Keywords-Plus	POLYMERIC ELECTROLYTES; BLENDS; CONDUCTIVITY
Research-Areas	Chemistry; Physics
Web-of-Science-Categories	Chemistry, Physical; Physics, Condensed Matter
Number-of-Cited-References	17
Journal-ISO	Solid State Ion.
Doc-Delivery-Number	188QP