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首页> 外文期刊>Journal of Applied Polymer Science >Enhancing the antifouling properties of polysulfone ultrafiltration membranes by the grafting of poly(ethylene glycol) derivatives via surface amidation reactions
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Enhancing the antifouling properties of polysulfone ultrafiltration membranes by the grafting of poly(ethylene glycol) derivatives via surface amidation reactions

机译：通过表面酰胺化反应接枝聚乙二醇衍生物，增强聚砜超滤膜的防污性能

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A carboxylic acid group was introduced on the polysulfone (PSF) membrane surface through a Friedel-Crafts reaction. Then, three kinds of poly(ethylene glycol) (PEG) derivatives were chosen to be immobilized on the PSF membrane surface via amide bonds. The membrane surface morphology, chemical composition, and hydrophilicity were investigated with scanning electron microscopy, attenuated total reflectance Fourier transform infrared spectroscopy, and water contact angle. The results indicate that PEG derivative immobilization effectively improved the antifouling properties of the PSF membranes. We found that prolonging the Friedel-Crafts reaction time or choosing the proper PEG derivative [methoxy poly(ethylene glycol) 550] could increase the surface hydrophilicity effectively and thus render the modified membranes better antifouling properties. The long-term ultrafiltration experiment demonstrated the improvement of recycling properties and the reliability of the surface modification process. (c) 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 41870.
机译：通过Friedel-Crafts反应将羧酸基团引入聚砜（PSF）膜表面。然后，选择三种聚（乙二醇）（PEG）衍生物通过酰胺键固定在PSF膜表面。用扫描电子显微镜，衰减全反射傅里叶变换红外光谱和水接触角研究了膜的表面形态，化学组成和亲水性。结果表明，PEG衍生物的固定有效地改善了PSF膜的防污性能。我们发现延长弗里德-克来福特反应时间或选择合适的PEG衍生物[甲氧基聚（乙二醇）550]可以有效地提高表面亲水性，从而使改性膜具有更好的防污性能。长期的超滤实验证明了回收性能的提高和表面改性工艺的可靠性。 （c）2015 Wiley Periodicals，Inc. J. Appl。 Polym。科学2015，132，41870。

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