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Issue 35, 2016, Issue in Progress
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Nanostructured double hydrophobic poly(styrene-b-methyl methacrylate) block copolymer membrane manufactured via a phase inversion technique

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Abstract

In this paper, we demonstrate the formation of nanostructured double hydrophobic poly(styrene-b-methyl methacrylate) (PS-b-PMMA) block copolymer membranes via a state-of-the-art phase inversion technique. The nanostructured membrane morphologies are tuned by different solvent and block copolymer compositions. The membrane morphology has been investigated using FESEM, AFM and TEM. Morphological investigation shows the formation of both cylindrical and lamellar structures on the top surface of the block copolymer membranes. The PS-b-PMMA, with an equal block length (PS160 K-b-PMMA160 K), exhibits both cylindrical and lamellar structures on the top layer of the asymmetric membrane. All membranes fabricated from PS160 K-b-PMMA160 K show incomplete pore formation in both cylindrical and lamellar morphologies during the phase inversion process. However, the PS-b-PMMA (PS135 K-b-PMMA19.5 K) block copolymer, with a short PMMA block, allowed us to produce open pore structures with ordered hexagonal cylindrical pores during the phase inversion process. The resulting PS-b-PMMA nanostructured block copolymer membranes have pure water flux from 105–820 L m−2 h bar and 95% retention of PEG50 K.

Graphical abstract: Nanostructured double hydrophobic poly(styrene-b-methyl methacrylate) block copolymer membrane manufactured via a phase inversion technique

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Publication details

The article was received on 26 Jan 2016, accepted on 09 Mar 2016 and first published on 11 Mar 2016


Article type: Paper
DOI: 10.1039/C6RA02313D
Citation: RSC Adv., 2016,6, 29064-29071

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    Nanostructured double hydrophobic poly(styrene-b-methyl methacrylate) block copolymer membrane manufactured via a phase inversion technique

    M. Karunakaran, R. Shevate and K. Peinemann, RSC Adv., 2016, 6, 29064
    DOI: 10.1039/C6RA02313D

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