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Issue 23, 2013
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Self-assembly in casting solutions of block copolymer membranes

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Abstract

Membranes with exceptional pore regularity and high porosity were obtained from block copolymer solutions. We demonstrate by small-angle X-ray scattering that the order which gives rise to the pore morphology is already incipient in the casting solution. Hexagonal order was confirmed in PS-b-P4VP 175k-b-65k solutions in DMF/THF/dioxane with concentrations as high as 24 wt%, while lamellar structures were obtained in more concentrated solutions in DMF or DMF/dioxane. The change in order has been understood with the support of dissipative particle dynamic modeling.

Graphical abstract: Self-assembly in casting solutions of block copolymer membranes

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Submitted
26 Oct 2012
Accepted
15 Apr 2013
First published
13 May 2013

Soft Matter, 2013,9, 5557-5564
Article type
Paper

Self-assembly in casting solutions of block copolymer membranes

D. S. Marques, U. Vainio, N. M. Chaparro, V. M. Calo, A. R. Bezahd, J. W. Pitera, K. Peinemann and S. P. Nunes, Soft Matter, 2013, 9, 5557
DOI: 10.1039/C3SM27475F

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