Glass transition in polymers: dependence of the Kohlrausch stretching exponent on the kinetic free volume fraction

Authors
Privalko, VP
Citation
Vp. Privalko, Glass transition in polymers: dependence of the Kohlrausch stretching exponent on the kinetic free volume fraction, J NON-CRYST, 255(2-3), 1999, pp. 259-263
Citations number
20
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF NON-CRYSTALLINE SOLIDS
ISSN journal
00223093 → ACNP
Volume
255
Issue
2-3
Year of publication
1999
Pages
259 - 263
Database
ISI
SICI code
0022-3093(199910)255:2-3<259:GTIPDO>2.0.ZU;2-Q
Abstract
Detailed analysis of current theoretical approaches and empirical correlati ons between the KWW stretching exponent beta and the molecular structure of single-component polymer systems suggests that the values of beta for stru ctural relaxation in the glass transition range change continuously with th e kinetic free volume fraction f(g)(K), rather than are fixed at the 'unive rsal' value beta = 3/7. (C) 1999 Elsevier Science B.V. All rights reserved.