Kinetically constrained block copolymer self-assembly a simple method to control domain size

George, Peter A. and Cooper-White, Justin J. (2009) Kinetically constrained block copolymer self-assembly a simple method to control domain size. European Polymer Journal, 45 4: 1065-1071. doi:10.1016/j.eurpolymj.2008.11.039


Author George, Peter A.
Cooper-White, Justin J.
Title Kinetically constrained block copolymer self-assembly a simple method to control domain size
Journal name European Polymer Journal   Check publisher's open access policy
ISSN 0014-3057
1873-1945
Publication date 2009-04
Sub-type Article (original research)
DOI 10.1016/j.eurpolymj.2008.11.039
Volume 45
Issue 4
Start page 1065
End page 1071
Total pages 7
Place of publication Oxford, United Kingdom
Publisher Pergamon
Language eng
Abstract In this work asymmetric polystyrene-block-polyethylene oxide (PS-PEO) diblock copolymers were blended with high and low molecular polystyrene (PS) homopolymer and spin cast, resulting in the rapid self-assembly of vertically oriented PEO cylinders in a matrix of PS. Due to the kinetically constrained phase separation of the system, increasing addition of homopolymer is shown to reduce the diameter of the PEO domains, even when the homopolymer was of significantly higher molecular weight than the PS block in the PS-PEO diblock copolymer and would be predicted to macro-phase separate from the copolymer. The outcomes of this study provide a novel method that requires the adjustment of a single variable to tune the size of vertically oriented PEO domains between 10 and 100 nm, with potential applications in a number of areas including membrane technologies.
Keyword Block copolymer
Self-assembly
Domain size
Polystyrene-block-poly(ethylene oxide)
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: Australian Institute for Bioengineering and Nanotechnology Publications
 
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Created: Thu, 03 Sep 2009, 08:22:01 EST by Mr Andrew Martlew on behalf of Aust Institute for Bioengineering & Nanotechnology