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首页> 外文期刊>Journal of Applied Polymer Science >Enhanced water flux through ultrafiltration polysulfone membrane via addition-removal of silica nano-particles: Synthesis and characterization
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Enhanced water flux through ultrafiltration polysulfone membrane via addition-removal of silica nano-particles: Synthesis and characterization

机译：通过去除二氧化硅纳米颗粒，通过超滤聚砜膜提高水通量：合成和表征

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摘要

In the present paper, hierarchically structured ultrafiltration polysulfone (PSf) membrane was prepared to explore the effect of addition and subsequent removal of SiO2 nano-particles on the membrane morphology, hydrophilicity, and separation properties. The PSf based membranes namely PSf, PSf/SiO2 and PSf/WSiO2 (i.e. SiO2 nano-particles was acid-washed and removed from PSf/SiO2), were synthesized and characterized by different characterization methods. Pure water flux through the membranes was determined using a filtration unit operating at a continuous dead-end flow mode. The modification enhanced the morphology, hydrophobicity, porosity and transport properties of the modified membranes, although the molecular weight cut-off (MWCO) of the membranes was not changed considerably. In comparison, PSf/WSiO2 membrane exhibited excellent pure water flux (about 4.5 times the flux of PSf, and 17 times the flux of PSf/SiO2), although antifouling property of PSf/SiO2 in separation of bovine serum albumin (BSA) was better than that of PSf and PSf/WSiO2 membranes. The results suggested that the addition/removal of sacrificial solid fillers within/from a membrane matrix may provide a promising strategy to enhance PSf membrane transport property. (c) 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43556.
机译：本文制备了分级结构的超滤聚砜（PSf）膜，以研究添加和随后去除SiO2纳米颗粒对膜形态，亲水性和分离性能的影响。合成了基于PSf的膜PSf，PSf / SiO2和PSf / WSiO2（即将SiO2纳米颗粒酸洗并从PSf / SiO2中去除），并通过不同的表征方法对其进行了表征。使用在连续死角流模式下运行的过滤单元确定通过膜的纯水通量。改性提高了改性膜的形态，疏水性，孔隙率和传输性能，尽管膜的分子量截留值（MWCO）并未显着变化。相比之下，尽管PSf / SiO2在分离牛血清白蛋白（BSA）方面具有更好的防污性能，但PSf / WSiO2膜仍具有优异的纯水通量（约为PSf的通量的4.5倍和PSf / SiO2的通量的17倍）比PSf和PSf / WSiO2膜要好。结果表明，在膜基质内/从膜基质中添加/去除牺牲性固体填料可提供增强PSf膜转运性能的有前途的策略。 （c）2016 Wiley Periodicals，Inc. J. Appl。 Polym。科学2016，133，43556。

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