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A Novel Crystallization Scheme in Polystyrene-block-(ferrocenyl dimethylsilane)] Diblock Copolymers

Xu, J. and Bellas, V. and Jungnickel, B.-J. and Stühn, B. and Rehahn, M. (2011):
A Novel Crystallization Scheme in Polystyrene-block-(ferrocenyl dimethylsilane)] Diblock Copolymers.
211, In: MACROMOLECULAR CHEMISTRY AND PHYSICS, (21), pp. 2276-2285, ISSN 1022-1352, [Article]

Abstract

Isothermal crystallization of the poly(ferrocenyl dimethylsilane) (PFDMS) segments in a polystyrene-block-(ferrocenyl dimethylsilane)] (PS-b-PFDMS) diblock copolymer of lamellar micro-morphology has been investigated. The PFDMS is shown to crystallize in a confined and grain-by-grain fashion. Here a `grain' is defined as an ensemble of stacked lamellae wherein the PFDMS crystallization spreads quickly but stops at its surroundings. Such crystallization propagates not only along the PFDMS lamellae but across the amorphous PS layers as well. We suggest that conformational changes in the PS as induced by the PFDMS crystallization ('squeezing transfer') are responsible for the latter pathway of the crystallization's spread.

Item Type: Article
Erschienen: 2011
Creators: Xu, J. and Bellas, V. and Jungnickel, B.-J. and Stühn, B. and Rehahn, M.
Title: A Novel Crystallization Scheme in Polystyrene-block-(ferrocenyl dimethylsilane)] Diblock Copolymers
Language: English
Abstract:

Isothermal crystallization of the poly(ferrocenyl dimethylsilane) (PFDMS) segments in a polystyrene-block-(ferrocenyl dimethylsilane)] (PS-b-PFDMS) diblock copolymer of lamellar micro-morphology has been investigated. The PFDMS is shown to crystallize in a confined and grain-by-grain fashion. Here a `grain' is defined as an ensemble of stacked lamellae wherein the PFDMS crystallization spreads quickly but stops at its surroundings. Such crystallization propagates not only along the PFDMS lamellae but across the amorphous PS layers as well. We suggest that conformational changes in the PS as induced by the PFDMS crystallization ('squeezing transfer') are responsible for the latter pathway of the crystallization's spread.

Journal or Publication Title: MACROMOLECULAR CHEMISTRY AND PHYSICS
Volume: 211
Number: 21
Divisions: 05 Department of Physics > Institute for condensed matter physics > Experimental Condensed Matter Physics
05 Department of Physics > Institute for condensed matter physics
05 Department of Physics
Date Deposited: 17 May 2011 04:55
Identification Number: doi:10.1002/macp.201000220
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