Chin.J.Chem.Eng. ›› 2010, Vol. 18 ›› Issue (4): 569-576.

• SEPARATION SCIENCE AND ENGINEERING • Previous Articles     Next Articles

Preparation and Characterization of a Novel Polyamide Charged Mosaic Membrane

ZHANG Jingya1,2, ZHANG Yanwu1, ZHANG Haoqin1, DANG Jingchuan1, LIU Jindun1   

  1. 1. School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, China;
    2. School of Pharmacy, Henan University of Traditional Chinese Medicine, Zhengzhou 450008, China
  • Received:2009-03-26 Revised:2010-06-22 Online:2010-08-28 Published:2010-08-28
  • Supported by:
    Supported by the National High Technology Research and Development Program of China (2008AA06Z330),the National Natural Science Foundation of China (20676125),and the Technician Service Enterprise Action Program (2009GJD00048).

Preparation and Characterization of a Novel Polyamide Charged Mosaic Membrane

张景亚1,2, 张延武1, 张浩勤1, 党敬川1, 刘金盾1   

  1. 1. School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, China;
    2. School of Pharmacy, Henan University of Traditional Chinese Medicine, Zhengzhou 450008, China
  • 通讯作者: LIU Jindun, E-mail:liujindun@zzu.edu.cn
  • 基金资助:
    Supported by the National High Technology Research and Development Program of China (2008AA06Z330),the National Natural Science Foundation of China (20676125),and the Technician Service Enterprise Action Program (2009GJD00048).

Abstract: A novel composite charged mosaic membrane (CCMM) was prepared via interfacial polymerization (IP) of polyamine[poly (epichlorohydrin amine) ]and trimesoyl chloride (TMC) on the polyethersulfone (PES) support. Fourier transform infrared spectroscopy (FT-IR),environmental scanning electron microscopy (ESEM),atomic force microscopy (AFM) and water contact angle analysis were applied to characterize the resulted CCMM.The FT-IR spectrum indicates that TMC reacts sufficiently with polyamine.ESEM and AFM pictures show that the IP process produces a dense selective layer on the support membrane.The water contact angle of the CCMM is smaller than that of the substrate membrane because of the cross-linked hydrophilic polyamine network.Several factors affecting the IP reaction and the performance of the CCMM,such as monomer concentration,reaction time,pH value of aqueous phase solution and posttreatment,were studied.The pure water flux of the optimized CCMM is 14.73 L·m-2 ·h-1 ·MPa-1 at the operating pressure of 0.4 MPa.The values of separation factorαfor NaCl/PEG1000/water and MgCl2/PEG1000/water are 11.89 and 9.96,respectively.These results demonstrate that CCMM is promising for the separation of low-molecular-weight organics from their salt aqueous solutions.

Key words: charged mosaic membranes, interfacial polymerization, polyamine, flux, retention

摘要: A novel composite charged mosaic membrane (CCMM) was prepared via interfacial polymerization (IP) of polyamine[poly (epichlorohydrin amine) ]and trimesoyl chloride (TMC) on the polyethersulfone (PES) support. Fourier transform infrared spectroscopy (FT-IR),environmental scanning electron microscopy (ESEM),atomic force microscopy (AFM) and water contact angle analysis were applied to characterize the resulted CCMM.The FT-IR spectrum indicates that TMC reacts sufficiently with polyamine.ESEM and AFM pictures show that the IP process produces a dense selective layer on the support membrane.The water contact angle of the CCMM is smaller than that of the substrate membrane because of the cross-linked hydrophilic polyamine network.Several factors affecting the IP reaction and the performance of the CCMM,such as monomer concentration,reaction time,pH value of aqueous phase solution and posttreatment,were studied.The pure water flux of the optimized CCMM is 14.73 L·m-2 ·h-1 ·MPa-1 at the operating pressure of 0.4 MPa.The values of separation factorαfor NaCl/PEG1000/water and MgCl2/PEG1000/water are 11.89 and 9.96,respectively.These results demonstrate that CCMM is promising for the separation of low-molecular-weight organics from their salt aqueous solutions.

关键词: charged mosaic membranes, interfacial polymerization, polyamine, flux, retention