Chin. J. Org. Chem. ›› 2018, Vol. 38 ›› Issue (11): 3127-3136.DOI: 10.6023/cjoc201806027 Previous Articles     Next Articles



刘立芬a,b, 张潇a, 谢欣a, 李蕊含a, 高从堦a,b   

  1. a 膜分离与水科学技术中心 浙江工业大学海洋学院 杭州 310014;
    b 浙江省膜分离与水处理协同创新中心 杭州 310014
  • 收稿日期:2018-06-19 修回日期:2018-06-26 发布日期:2018-06-29
  • 通讯作者: 刘立芬
  • 基金资助:


Modification of Polyimide-Urethane Reverse Osimosis Composite Membrane Based on NaA Zeolite

Liu Lifena,b, Zhang Xiaoa, Xie Xina, Li Ruihana, Gao Congjiea,b   

  1. a Center for Membrane and Water Science and Technology, Ocean College, Zhejiang University of Technology, Hangzhou 310014;
    b Collaborative Innovation Center of Membrane Separation and Water Treatment of Zhejiang Province, Hangzhou 310014
  • Received:2018-06-19 Revised:2018-06-26 Published:2018-06-29
  • Supported by:

    Project supported by the National Natural Science Foundation of China (No. 21776253 & 21774077), the National Key Research and Development Program of China (No. 2016YFC0401508), the National Basic Research Program of China (No. 2015CB655303) and the Open Research Fund Program of Collaborative Innovation Center of Membrane Separation and Water Treatment of Zhejiang Province (No. 2015).

A polyimide-urethane reverse osmosis (RO) composite membrane (MMPD-CFIC@CFIC-DMMPD) was prepared through the reaction of N,N'-dimethyl-m-phenylenediamine (DMMPD) and 4-methyl-phenylenediamine (MMPD) with 5-choroformyloxyisophaloyl chloride (CFIC) via two-step interfacial polymerization method, and this membrane exhibits good oxidation resistance. Then, this MMPD-CFIC@CFIC-DMMPD membrane was further modified with NaA zeolite by doping in the CFIC organic phase. The chemical structure of membrane active layer was examined by the attenuated total reflectance infrared (ATR-IR) and X-ray photoelectronic spectroscopy (XPS). The membrane surface and cross-section morphologies were observed with scanning electronic microscopy (SEM), atomic force microscope (AFM) and transmission electron microscopy (TEM), and the hydrophicity of membrane surface was evaluated by contact angle. Moreover, the separation performance, chlorine resistance and organic foulant resistance properties of the two membranes were systematically investigated. The results showed that the modified polyimide-urethane RO membrane (MMPD-CFIC/NaA@CFIC-DMMPD) presented higher water flux, better organic foulant resistance performance as well as favourite chlorine resistance property than the origin MMPD-CFIC@CFIC-DMMPD membrane due to the incorporating of NaA nanoparticles into the membrane.

Key words: polyimide-urethane, reverse osmosis composite membrane, NaA zeolite, high water flux, foulant resistance, chlorine resistance