高等学校化学学报

高等学校化学学报 ›› 2010, Vol. 31 ›› Issue (12): 2506.

• 研究论文 • 上一篇    下一篇

紫外接枝聚合聚乙二醇甲基丙烯酸甲酯制备抗污染聚砜超滤膜

于海军1,2,曹义鸣1,康国栋1,周美青1,刘健辉1,袁权1   

  1. 1. 中国科学院大连化学物理研究所, 大连 116023;
    2. 中国科学院研究生院, 北京 100049
  • 收稿日期:2010-02-03 修回日期:2010-04-22 出版日期:2010-12-10 发布日期:2010-12-06
  • 通讯作者: 曹义鸣 E-mail:yuhj@dicp.ac.cn
  • 作者简介:曹义鸣, 男, 博士, 研究员, 博士生导师, 主要从事膜分离应用及集成技术的研究.
  • 基金资助:

    国家自然科学基金(批准号: 20906086)资助.

Enhancing Antifouling Property of Polysulfone Ultrafiltration Membrane by Grafting Poly(ethylene glycol) Methyl Ether Methacrylate(PEGMA) via UV\|initiated Polymerization

YU Hai-Jun1,2, CAO Yi-Ming1*, KANG Guo-Dong1, ZHOU Mei-Qing1, LIU Jian-Hui1, YUAN Quan1   

  1. 1. Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China;
    2. Graduate University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2010-02-03 Revised:2010-04-22 Online:2010-12-10 Published:2010-12-06
  • Contact: CAO Yi-Ming E-mail:yuhj@dicp.ac.cn
  • About author:曹义鸣, 男, 博士, 研究员, 博士生导师, 主要从事膜分离应用及集成技术的研究.
  • Supported by:

    国家自然科学基金(批准号: 20906086)资助.

PDF (PC)

被引次数

28

摘要： 摘要:以二苯甲酮(BP)为紫外引发剂，将聚乙二醇甲基丙烯酸甲酯(PEGMA)接枝在聚砜超滤膜表面以提高膜的抗污染性能。在二苯甲酮存在的条件下，波长较长的紫外光辐射可以有效防止聚砜分子主链的剪切，保持改性膜的分离性能。用表面全反射红外(ATR/FTIR)和水接触角测定仪(CA)来表征改性前后膜表面化学组成和亲水性的变化。考察了PEGMA浓度、紫外辐射时间和BP浓度对接枝度、改性超滤膜亲水性和抗污染性能的影响。与未改性的聚砜超滤膜相比，改性膜的截留率和纯水通量未显著改变，但抗污染性能显著提高。

关键词: 超滤膜, 二苯甲酮, 紫外辐射, 抗污染

Abstract: Abstract: Poly (ethylene glycol) methyl ether methacrylate (PEGMA) was grafted onto polysulfone (PSF) ultrafiltration membrane using benzophenone (BP) as the initiator to improve the antifouling property. Polymer chain scission was suppressed by H-abstraction from methyl groups under long-wavelength UV irradiation (λ﹥300nm), which partly avoided the photodegradation of PSF ultrafiltration membrane. The effects of PEGMA concentration, UV irradiation time and BP concentration on grafting degree and the improvement of membrane antifouling properties were investigated. Attenuated total reflectance fourier transform infrared spectroscopy (ATR/FTIR) was used to characterize the change of chemical composition. Static contact angle (CA) measurements showed that the hydrophilicity of PEGMA-modified PSF membranes was enhanced with the increase of grafting degree. The flux of pure water decreased slightly after modification, while the rejection to bovine serum albumin (BSA) increased. The improvement of antifouling property for PEGMA-modified membrane was accordant with the increase of grafting degree. The excellent antifouling property indicated PEGMA-modified membranes a potential application in ultrafiltration process.

Key words: ultrafiltration membrane, benzophenone, UV-irradiation, antifouling

TrendMD: