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Membranes 2017, 7(3), 37; doi:10.3390/membranes7030037

Toward the Fabrication of Advanced Nanofiltration Membranes by Controlling Morphologies and Mesochannel Orientations of Hexagonal Lyotropic Liquid Crystals

1
Institute for Frontier Materials, Deakin University, Locked Bag 20000, Geelong 3220, Australia
2
Australian Nuclear Science and Technology Organization, Locked Bag 2001, Kirrawee DC 2232, Australia
3
School of Mechanical Engineering, Hefei University of Technology, No. 193 Tunxi Road, Hefei 230009, China
*
Author to whom correspondence should be addressed.
Received: 14 June 2017 / Revised: 10 July 2017 / Accepted: 12 July 2017 / Published: 21 July 2017
(This article belongs to the Special Issue Advanced Nanofiltration Membranes)
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Abstract

Water scarcity has been recognized as one of the major threats to human activity, and, therefore, water purification technologies are increasingly drawing attention worldwide. Nanofiltration (NF) membrane technology has been proven to be an efficient and cost-effective way in terms of the size and continuity of the nanostructure. Using a template based on hexagonal lyotropic liquid crystals (LLCs) and partitioning monomer units within this structure for subsequent photo-polymerisation presents a unique path for the fabrication of NF membranes, potentially producing pores of uniform size, ranging from 1 to 5 nm, and large surface areas. The subsequent orientation of this pore network in a direction normal to a flat polymer film that provides ideal transport properties associated with continuous pores running through the membrane has been achieved by the orientation of hexagonal LLCs through various strategies. This review presents the current progresses on the strategies for structure retention from a hexagonal LLCs template and the up-to-date techniques used for the reorientation of mesochanels for continuity through the whole membrane. View Full-Text
Keywords: nanofiltration (NF); hexagonal lyotropic liquid crystals (hexagonal LLCs); structure retention; reorientation; membranes nanofiltration (NF); hexagonal lyotropic liquid crystals (hexagonal LLCs); structure retention; reorientation; membranes
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Wang, G.; Garvey, C.J.; Zhao, H.; Huang, K.; Kong, L. Toward the Fabrication of Advanced Nanofiltration Membranes by Controlling Morphologies and Mesochannel Orientations of Hexagonal Lyotropic Liquid Crystals. Membranes 2017, 7, 37.

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