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Time-Resolved Saxs and Waxs Studies on Ordering Process in Oriented Crystallization of Polymers

Published online by Cambridge University Press:  26 February 2011

Kenji Saijo  and
Takeji Hashimoto
Kenji Saijo
Affiliation:
Department of Polymer Chemistry, Faculty of Engineering, Kyoto University, Kyoto 606, Japan
Takeji Hashimoto
Affiliation:
Department of Polymer Chemistry, Faculty of Engineering, Kyoto University, Kyoto 606, Japan
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Abstract

Mechanism and dynamics of the ordering process in oriented crystallization of polymers were investigated by time-resolved small-angle X-ray scattering (SAXS) and wide-angle X-ray diffraction (WAXS). As a model system for the oriented crystallization, a cross-linked polybutadiene rubber with a high cis-1,4-linkage was chosen, and the structure evolution during the isothermal crystallization was investigated under constant elongations by real time and in situ analyses of the microscopic observables such as long spacing, crystallite size, SAXS integrated intensity, WAXS crystallinity and WAXS line width as well as a macroscopic observable such as stress. The isothermal ordering processes were explored in three different crystallization regimes: crystallization from (i) unoriented melts, (ii) weakly-to-moderately oriented melts and (iii) highly oriented melts.

Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 79: Symposium F – Scattering, Deformation and Fracture in Polymers , 1986 , 267
Copyright
Copyright © Materials Research Society 1987

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