Engineering a Robust, Versatile Amphiphilic Membrane Surface Through Forced Surface Segregation for Ultralow Flux-Decline
Engineering a Robust, Versatile Amphiphilic Membrane Surface Through Forced Surface Segregation for Ultralow Flux-Decline
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DOI：
10.1002/adfm.201001384
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发表时间：
2011-01-07
影响因子：
19
通讯作者：
Jiang, Zhongyi
中科院分区：
文献类型：
--
作者：
Chen, Wenjuan;Su, Yanlei;Jiang, Zhongyi
与生物污垢/污染物不同，油类污垢/污染物易于聚结、扩散和迁移，从而在表面形成连续的污垢层。因此，这种污染不能简单地减轻目前广泛使用的亲水性改性材料，如聚（乙二醇）（PEG）为基础的或两性离子聚合物等。在本研究中，一个两亲性的多孔膜表面，包括亲水性抗污染域和疏水性污垢释放微域，探索通过“强制表面分离”的方法。所得膜具有优异的上级耐油污染和耐生物污染性能：膜污染得到极好的抑制，渗透通量下降降至超低水平。可以设想，本研究可能会打开一个新的途径，设计和建造的强大的，多功能的表面。
Unlike biofoulants/pollutants, oil foulants/pollutants are prone to coalesce, spread and migrate to form continuous fouling layer covering on the surfaces. Therefore, such kind of fouling can not be simply alleviated by hydrophilic modification with currently extensively used antifouling materials such as poly(ethylene glycol) (PEG)-based or zwitterionic polymers etc. In the present study, an amphiphilic porous membrane surface, comprising hydrophilic fouling resistant domains and hydrophobic fouling release microdomains, is explored via a "forced surface segregation" approach. The resultant membranes exhibit both superior oil-fouling and bio-fouling resistant property: membrane fouling is exquisitely suppressed and the permeation flux-decline is decreased to an ultralow level. It can be envisaged that the present study may open a novel avenue to the design and construction of robust, versatile antifouling surfaces.