Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.memsci.2006.12.035
Title: Nano-structured proton exchange membranes molded by polymerizing bi-continuous microemulsion
Authors: Lim, T.H.
Tham, M.P.
Liu, Z.
Hong, L. 
Guo, B.
Keywords: Conductivity
DMFC
Microemulsion
Proton exchange membranes
Issue Date: 1-Apr-2007
Citation: Lim, T.H., Tham, M.P., Liu, Z., Hong, L., Guo, B. (2007-04-01). Nano-structured proton exchange membranes molded by polymerizing bi-continuous microemulsion. Journal of Membrane Science 290 (1-2) : 146-152. ScholarBank@NUS Repository. https://doi.org/10.1016/j.memsci.2006.12.035
Abstract: A unique type of nano-structured proton exchange membrane (PEM) has been fabricated through photo-polymerizing a bicontinuous microemulsion. This microemulsion is constituted by a polymerizable zwitterionic surfimer 3-((11-acryloyloxyundecyl)imidazoyl)propyl sulfonate (AIPS), 3-sulfopropylmethacrylate, potassium salt (SPM), acrylonitrile and water. As the resulting colloidal system maintains quasi-homogeneous state throughout the polymerization course, the inherent bicontinuous microemulsion structure was successfully transferred to the matrix of the polymer membrane. Such membranes are therefore composed of dual phase channels with ca. 1.5-2 nm of the hydrophilic channel breadth. This particular structural trait imparts to the membranes excellent proton conductivities of up to 10-1 S cm-1 as well as low methanol permeability. The DMFC single cell loaded with the demo PEM manifests ca. 20 mW cm-2 of power output. The attributes of this PEM are elucidated from the bicontinuous structure of microemulsion. © 2007 Elsevier B.V. All rights reserved.
Source Title: Journal of Membrane Science
URI: http://scholarbank.nus.edu.sg/handle/10635/89565
ISSN: 03767388
DOI: 10.1016/j.memsci.2006.12.035
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