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首页> 外文期刊>journal of applied polymer science >Preparation and structure of cross‐linked asymmetric membranes based on polystyrene and divinylbenzene
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Preparation and structure of cross‐linked asymmetric membranes based on polystyrene and divinylbenzene

机译：Preparation and structure of cross‐linked asymmetric membranes based on polystyrene and divinylbenzene

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AbstractAsymmetric polystryene‐based membranes were prepared by photocross‐linking with divinylbenzene (DVB) combined with phase‐inversion steps. The primary variables examined were original polystrene concentration in the membrance casting solution and degree of cross‐linking. The effects of these upon membrane morphology and reverse osmosis performance were determined. At higher DVB concentration, skin was formed at the top due to phase separation and at the bottom due to preferential polymer absorption at the support interface. An attempt was made to increase membrane ductility by incorporating low levels of liquid polybutadiene or styrene‐butadiene block copolymer, but no significant change was measured. © 1994 John Wiley

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