Cubic phases of block copolymers under shear and electric fields by cell dynamics simulation. I. Spherical phase

Pinna, Marco and Zvelindovsky, Andrei and Todd, S. and Goldbeck-Wood, G. (2006) Cubic phases of block copolymers under shear and electric fields by cell dynamics simulation. I. Spherical phase. Journal of Chemical Physics, 125 (15). ISSN 0021-9606

Full content URL: http://scitation.aip.org/content/aip/journal/jcp/1...

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Item Type:Article
Item Status:Live Archive

Abstract

Cell dynamics simulation is used to investigate pathways of sphere-to-cylinder transition in block copolymer melt under applied simple shear flow and electric field. Both fields can induce the transition when their strength is above some critical value. At weak fields the spherical phase is preserved, with spheres being deformed into ellipsoids. Weak shear flow is found to improve order in the spherical phase. Observed sliding of layers of spheres under shear is very similar to the experimental finding by Hamley J. Chem. Phys. 108, 6929 (1998). The kinetic pathways are sensitive to the degree of microphase separation in the system and hence affected by temperature. The details of the pathways are described by means of Minkowski functionals. © 2006 American Institute of Physics.

Keywords:Cell culture, Computer simulation, Electric field effects, Phase separation, Shear flow, Thermal effects, Cell dynamics, Ellipsoids, Microphase separation, Minkowski functionals, Block copolymers
Subjects:F Physical Sciences > F320 Chemical Physics
F Physical Sciences > F162 Polymer Chemistry
Divisions:College of Science > School of Mathematics and Physics
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ID Code:14974
Deposited On:23 Sep 2014 10:26

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