Abstract

In this study, a new modified polymer by grafting poly(N-vinylpyrrolidone) onto polyethersulfone was prepared. The polymerization was carried out in a homogenous phase by using N-methyl pyrrolidone as solvent. Crucial parameters affecting the graft copolymerization, such as monomer concentration and absorbed dose were studied. The existence of grafted chains was confirmed by FTIR spectroscopy. Pristine polyethersulfone and graft copolymer with different grafting degrees were then cast into membranes through phase inversion methodology. The contact angle of the membranes was measured to study transformation of the hydrophilic property on the surface. The cross-section morphology, thicknesses, water permeability, bovine serum albumin permeability and rejection of the membranes were studied. Finally, the membranes made of grafted copolymer (PES-g-PVP) showed an improvement of the antifouling property after BSA solution flux attenuation test.

中文翻译：

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聚（N-乙烯基吡咯烷酮）接枝聚醚砜制备滤膜及其对膜耐污染性的影响

摘要

在这项研究中，通过将聚（N-乙烯基吡咯烷酮）接枝到聚醚砜上制备了一种新的改性聚合物。通过使用N在均相中进行聚合-甲基吡咯烷酮作为溶剂。研究了影响接枝共聚的关键参数，例如单体浓度和吸收剂量。FTIR光谱证实了接枝链的存在。然后通过相转化法将不同接枝度的原始聚醚砜和接枝共聚物铸成膜。测量膜的接触角以研究表面上的亲水性的转化。研究了横截面的形态，厚度，透水性，牛血清白蛋白的渗透性和膜的截留率。最后，在BSA溶液通量衰减测试后，由接枝共聚物（PES- g -PVP）制成的膜表现出改进的防污性能。