Abstract
This article discusses a new method to prepare polypropylene membrane that has hydrophilic surfaces and asymmetric porous structure. This membrane is based on a newly developed hydroxylated polypropylene (PP-OH), which has a “brushlike” microstructure, high molecular weight, high melting point, and relatively high concentration of hydroxy groups. Under the leaching process conditions, various asymmetric hydrophilic PP/PP-OH membranes are prepared with controllable pore structures. The PP-OH polymer becomes the surface modifier of asymmetric PP membrane with flexible functional groups located on the membrane surfaces, including pore surfaces. This new hydrophilic PP/PP-OH membrane is useful in ultrafiltration, not only offering good selectivity and flux but also showing excellence in antifouling property. © 1997 John Wiley & Sons, Inc. J Appl Polym Sci 64: 567–575, 1997
Published Version
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