Issue 23, 2013
From the journal:

Soft Matter

Self-assembly in casting solutions of block copolymer membranes†

Debora Salomon Marques,a   Ulla Vainio,b   Nicolas Moreno Chaparro,a   Victor Manuel Calo,c   Ali Reza Bezahd,d   Jed W. Pitera,e   Klaus-Viktor Peinemannf  and  Suzana P. Nunes*a  

* Corresponding authors

a Water Desalination and Reuse Center, King Abdullah University of Science and Technology, 23955-6900 Thuwal, Kingdom of Saudi Arabia
E-mail: suzana.nunes@kaust.edu.sa

b HASYLAB at Deutsches Elektronen-Synchrotron (DESY), Notkestr. 85, 22607 Hamburg, Germany

c Earth Sciences and Engineering, Numerical Porous Media Center, King Abdullah University of Science and Technology, 23955-6900 Thuwal, Kingdom of Saudi Arabia

d Imaging and Characterization Lab, King Abdullah University of Science and Technology, 23955-6900 Thuwal, Kingdom of Saudi Arabia

e IBM Almaden Research Center, San Jose, USA

f Advanced Membranes and Porous Materials Center, 23955-6900 Thuwal, Kingdom of Saudi Arabia

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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Article information

DOI
https://doi.org/10.1039/C3SM27475F
Article type
Paper
Submitted
26 Oct 2012
Accepted
15 Apr 2013
First published
13 May 2013

Soft Matter, 2013,9, 5557-5564

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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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