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Characterization of PVdF/Laponite Reinforced Composite Membranes for PEMFC Surpport  

Oh, Seul-Gi (School of Materials Science and Engineering, Engineering Research Institute, i-Cube Center, Gyeongsang National University)
Hwang, Hae-Young (School of Materials Science and Engineering, Engineering Research Institute, i-Cube Center, Gyeongsang National University)
Kim, Hyoung-Juhn (Fuel Cell Research Center, Korea Institute of Science and Technology)
Nam, Sang-Yong (School of Materials Science and Engineering, Engineering Research Institute, i-Cube Center, Gyeongsang National University)
Publication Information
Membrane Journal / v.20, no.2, 2010 , pp. 159-168 More about this Journal
Abstract
In this study, high porous PVdF flat sheet membranes were prepared to obtain reinforced membrane support for polymer electrolyte membrane fuel cell. Nano-size laponite was randomly dispersed in the membranes to improve mechanical property which lowered by the high porosity. The morphology and porosity of prepared PVdF/Laponite composite membranes were examined using the SEM analysis and the weight method and all membranes showed over 60% porosity. The membrane thermal stability depending on the laponite contents in the composite membranes was evaluated by membrane heat shrinkage at $105^{\circ}C$ and $135^{\circ}C$. MD and TD heat shrinkage of the PVdF composite membrane containing 5 wt% laponite was 2~3% and 2~3.5% at $135^{\circ}C$, respectively. The mechanical strength was enhanced after incorporating laponite particles and 30% increase in the modulus compared to pure PVdF membrane was obtained.
Keywords
reinforced membrane; fuel cell; laponite; phase separation; heat shrinkage;
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Times Cited By KSCI : 2  (Citation Analysis)
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