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    • 86. 发明公开
    • Charged hollow fiber membrane having hexagonal voids
    • GELADENE HOHLFASERMEMBRAN MIT HEXAGONALENHOHLRÄUMEN
    • EP2913097A1
    • 2015-09-02
    • EP15152938.5
    • 2015-01-28
    • Pall Corporation
    • Singh, AmarnauthDavid, YolandoHarton, Shane Edward
    • B01D67/00B01D69/06B01D69/08
    • B01D69/08B01D63/021B01D67/003B01D69/02B01D69/082B01D2323/18B01D2323/24B01D2325/021B01D2325/08B01D2325/14B01D2325/16B01D2325/18
    • Disclosed is a charged hollow fiber membrane having hexagonal voids for use in high throughput applications. The membrane includes: (i) an inner surface; (ii) an outer surface; (iii) a porous bulk disposed therebetween, wherein the porous bulk comprises at least a first region including: a) a first set of pores having a controlled pore size and having outer rims; b) a second set of pores connecting the outer rims of the first set of pores, wherein the pore size of the first set of pores is greater than the pore size of the second set of pores; and c) a polymer matrix supporting the first set of pores; and (iv) at least one charged zone disposed on the inner surface, on the outer surface, and/or in the porous bulk hollow fiber membrane. Also disclosed is a method for preparing such hollow fiber membranes, which involves coating a filament with a coating composition that includes a membrane-forming polymer, a charged polymer, and dissolvable nanoparticles, followed by phase invention, dissolving of the nanoparticles, and removal of the filament.
    • 公开了一种带有六边形空隙的带电中空纤维膜,用于高通量应用。 膜包括:(i)内表面; (ii)外表面; (iii)在其间设置的多孔体,其中所述多孔体包括至少第一区域,所述第一区域包括:a)具有受控孔径且具有外边缘的第一组孔; b)连接第一组孔的外缘的第二组孔,其中第一组孔的孔径大于第二组孔的孔径; 和c)支撑第一组孔的聚合物基质; 和(iv)设置在内表面,外表面和/或多孔整体中空纤维膜中的至少一个带电区域。 还公开了一种制备这种中空纤维膜的方法,其包括用包括成膜聚合物,带电聚合物和可溶解纳米颗粒的涂料组合物涂覆长丝,然后进行相变,纳米颗粒的溶解和除去 灯丝。