Diluent crystal alignment in the formation of membranes via liquid–solid thermally induced phase separation
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Liquid–solid thermally induced phase separation (L–S TIPS), in which a diluent crystallizes within a liquid polymer matrix, has been used to produce microporous materials previously. However, little work has been done applying this concept to membrane formation due to the fact that these materials are tortuous and show no advantage over other microporous materials. This paper suggests a method of crystal alignment in L–S TIPS, which could lead to microporous membranes of high porosity, high selectivity, and low tortuosity.
KeywordsLiquid–solid TIPS Microporous membrane Crystal alignment
This research was supported by the National Water Research Institute, NSF Grant #CTS–0625233, and the Cockrell School of Engineering at The University of Texas at Austin.
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