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通过均相溶液中辐射诱导共聚由聚（甲基丙烯酸乙二醇酯）接枝的聚醚砜制备的防污膜。

Antifouling Membranes Prepared from Polyethersulfone Grafted with Poly(ethylene glycol) Methacrylate by Radiation-Induced Copolymerization in Homogeneous Solution.

作者信息

Lou Dan, Hou Zhengchi, Yang Haijun, Liu Yinfeng, Wang Ting

机构信息

Department of Polymer Materials, College of Materials Science and Engineering, Shanghai University (SHU), Shanghai 200444, China.

Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China.

出版信息

ACS Omega. 2020 Oct 12;5(42):27094-27102. doi: 10.1021/acsomega.0c02439. eCollection 2020 Oct 27.

DOI:10.1021/acsomega.0c02439
PMID:33134669
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7594002/
Abstract

To synthesize evenly grafted copolymers, gamma radiation of homogeneous solutions was employed to graft poly(ethylene glycol) methacrylate (PEGMA) onto polyethersulfone (PES). The grafting was verified by Fourier transform infrared spectroscopy, and the degrees of grafting (DGs) were determined by elementary analysis. The PES--polyPEGMA copolymers with different DGs were obtained by changing the monomer concentration. Membranes were cast from pristine PES, PES/PEG blends, and PES--polyPEGMA with different DGs, respectively, via nonsolvent-induced phase separation. Results from water contact angle measurements and scanning electron microscopy analysis indicated that increasing DGs led to PES--polyPEGMA membranes with increasing hydrophilicity and porousness. Filtration experimental results showed that increasing DGs without adding pore-forming agents caused PES--polyPEGMA membranes with higher permeability. Compared with PES/PEG membranes with analogous permeation characteristics, in which PEG is added as a pore-forming agent, PES--polyPEGMA membranes exhibited superior antifouling properties.

摘要

为了合成均匀接枝的共聚物，采用均相溶液的γ辐射将甲基丙烯酸聚乙二醇酯（PEGMA）接枝到聚醚砜（PES）上。通过傅里叶变换红外光谱对接枝进行了验证，并通过元素分析确定了接枝度（DG）。通过改变单体浓度获得了具有不同DG的PES-聚PEGMA共聚物。分别通过非溶剂诱导相分离，由原始PES、PES/PEG共混物以及具有不同DG的PES-聚PEGMA浇铸制备膜。水接触角测量和扫描电子显微镜分析结果表明，DG的增加导致PES-聚PEGMA膜的亲水性和多孔性增加。过滤实验结果表明，在不添加成孔剂的情况下，DG的增加会使PES-聚PEGMA膜具有更高的渗透性。与添加PEG作为成孔剂的具有类似渗透特性的PES/PEG膜相比，PES-聚PEGMA膜表现出优异的抗污染性能。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b72d/7594002/e262b713c1a9/ao0c02439_0009.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b72d/7594002/e262b713c1a9/ao0c02439_0009.jpg

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