OBSERVATION OF INTERNAL RELAXATION MODES DURING EARLY STATE OF SPINODAL DECOMPOSITION IN THE ISOTOPIC POLYMER MIXTURE D-PS PS WITH SANS/

Authors
SCHWAHN D ECKERLEBE H HADICKE E SPRINGER T
Citation
D. Schwahn et al., OBSERVATION OF INTERNAL RELAXATION MODES DURING EARLY STATE OF SPINODAL DECOMPOSITION IN THE ISOTOPIC POLYMER MIXTURE D-PS PS WITH SANS/, Journal de physique. IV, 3(C8), 1993, pp. 13-16
Citations number
14
Categorie Soggetti
Physics
Journal title
Journal de physique. IV → ACNP
ISSN journal
11554339
Volume
3
Issue
C8
Year of publication
1993
Pages
13 - 16
Database
ISI
SICI code
1155-4339(1993)3:C8<13:OOIRMD>2.0.ZU;2-P
Abstract
Early state of spinodal decomposition in a symmetric isotrope mixture d-PS/PS has been studied with SANS at two temperatures well below T(c) . Nonexponential time behaviour was found according to internal relaxa tion modes of the polymer. The data could satisfactorily be described by an ansatz from Akcasu which includes internal relaxation modes appr oximately and is an extension of the Cahn-Hilliard-Cook theory for pol ymer blends. The interaction range for the Onsager coefficient was fou nd increasing with time and larger than the radius of gyration.