摘要
随着智能材料和纳米技术的发展,具有刺激响应的新型功能膜材料是膜分离技术发展的主要方向之一。磁响应分离膜是一种由磁性颗粒和聚合物高分子混合制备的,可以对磁场刺激产生响应的分离膜。磁响应分离膜兼具膜分离技术的低能耗、高效率等优点和磁性颗粒的磁性响应和催化性能等。磁性颗粒对磁场的响应不仅会影响膜的结构和分离选择性,还会改变膜材料的润湿性以及提高膜抗污染性能。本文从共混法、涂层法、接枝法和原位生长法对磁响应分离膜的制备方法展开论述,介绍了不同制备方法的优缺点及未来发展方向。从调控膜表面润湿性、调控膜抗污染性、调控膜孔径三部分对磁响应分离膜的磁场响应机理进行了详细阐述。并从过滤、吸附、降解、交换分离四方面对磁响应分离膜的应用领域展开论述。最后对磁响应分离膜的发展进行了总结,并对其发展前景进行了展望。
With the development of intelligent materials and nanotechnology,new functional membrane materials with special stimulus-response have been one of the main directions of membrane separation technology.Magnetically responsive membrane is a kind of separation membrane prepared by mixing magnetic particles and polymers,which can respond to magnetic field stimulation.Magnetically responsive membrane has the advantages of low energy consumption and high efficiency of membrane separation technology and the magnetic and catalytic properties of magnetic particles.The response of magnetic particles to magnetic field not only affects the structure and separation performance of the membrane,but also benefits the wettability and anti-fouling of the membrane.In this paper,the preparation methods of magnetically responsive membrane including blending method,coating method,grafting method and in-situ growth method are discussed in detail.Then the advantages and disadvantages of different preparation methods and their future development are compared.And from four aspects of filtration,adsorption,degradation,exchange separation,the application field of magnetic response separation membrane is discussed.Finally,the development of magnetically responsive membrane is summarized and its development is prospected.
作者
王雅洁
李蕾
张倩
李倩
李望良
WANG Yajie;LI Lei;ZHANG Qian;LI Qian;LI Wangliang(Key Laboratory of Green Process and Engineering,Institute of Process Engineering,Chinese Academy of Sciences,Beijing 100190,China;University of Chinese Academy of Sciences,Beijing 100049,China;Logistics University of PAPF,Tianjin 300309,China)
出处
《化工学报》
EI
CAS
CSCD
北大核心
2020年第7期2933-2944,共12页
CIESC Journal
基金
国家重点研发计划项目(2017YFB0308002)
贵州省科技支撑计划项目([2019]2839)
重质油国家重点实验室开放基金资助项目(SKLOP201903001)。
关键词
磁响应膜
磁性颗粒
分离
刺激响应
机理
magnetically responsive membrane
magnetic particle
separation
stimulus-response
mechanism
