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首页> 外文期刊>Journal of Applied Polymer Science >Effects of the support-layer hydrophilicity on the active-layer formation of composite membranes
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Effects of the support-layer hydrophilicity on the active-layer formation of composite membranes

机译：支撑层亲水性对复合膜活性层形成的影响

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摘要

To understand the effects of the hydrophilicity of the support layer on the formation of the active layer and the performance of composite membranes, a support layer was prepared from a polysulfone (PSf) blend with a hydrophilic copolymer, and then its top surface was overcoated with an active layer fabricated by an interfacial reaction of m-phenylenediamine (MPDA) with trimesoyl chloride. The time required for impregnating the support layer with an aqueous solution containing MPDA was gradually decreased by increases in the hydrophilicity of the support layer. The required soaking time was greater than 9 min for the formation of the defect-free active layer when the support layer prepared from PSI was used, whereas it could be reduced about 1 min by the use of the hydrophilic support layer. Furthermore, composite membranes prepared with the PSf/hydrophilic copolymer blend as the support layer always exhibited higher salt rejection and water permeability than those prepared with PSf as the support layer. (C) 2007 Wiley Periodicals, Inc.
机译：为了了解支撑层的亲水性对活性层形成和复合膜性能的影响，由聚砜（PSf）与亲水性共聚物共混物制备了支撑层，然后在其表面覆盖了一层通过间苯二胺（MPDA）与均苯三甲酰氯的界面反应制备的活性层。通过增加支撑层的亲水性，逐渐减少了用含有MPDA的水溶液浸渍支撑层所需的时间。当使用由PSI制备的支撑层时，形成无缺陷的活性层所需的浸泡时间大于9分钟，而通过使用亲水性支撑层可以减少约1分钟。此外，以PSf /亲水共聚物共混物作为支撑层制备的复合膜，与以PSf作为支撑层制备的复合膜相比，总是表现出更高的脱盐率和透水性。 （C）2007 Wiley期刊公司

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