Pinna, Marco and Zvelindovsky, Andrei (2008) Kinetic pathways of gyroid-to-cylinder transitions in diblock copolymers under external fields: cell dynamics simulation. Soft Matter, 4 (2). pp. 316-327. ISSN 1744-683X
Full content URL: http://pubs.rsc.org/en/Content/ArticleLanding/2008...
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Item Type: | Article |
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Item Status: | Live Archive |
Abstract
Using cell dynamics simulation we investigate the cubic gyroid morphology of block copolymer melts under simple shear flow and electric field. The electric field should be stronger than a certain critical value to induce transition to a cylindrical phase. In the case of simple steady shear the gyroid-to-cylinder transition was observed even for a very weak shear. Quantitative analysis of pathways of gyroid-to-cylinder transition is performed by means of Minkowski functionals. We found that the kinetics of the gyroid-to-cylinder transition are different under electric field and shear flow. Moreover, the gyroid structure under different strengths of electric field shows different pathways. Different types of intermediates such as five-, four-fold connections and "winding" cylinders are found for different pathways. This journal is © The Royal Society of Chemistry.
Additional Information: | First published as an Advance Article online: 21 November 2007 |
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Keywords: | Computer simulation, Electric field effects, Phase transitions, Shear flow, Shear stress, Strength of materials, Four-fold connections, Gyroid-to-cylinder transition, Minkowski functionals, Block copolymers |
Subjects: | F Physical Sciences > F162 Polymer Chemistry |
Divisions: | College of Science > School of Mathematics and Physics |
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ID Code: | 14966 |
Deposited On: | 17 Sep 2014 11:35 |
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