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Preparation and performance of novel thermally stable composite reverse osmosis membranes
Authors: HU Lijie1, ZHANG Shouhai1,4*, GUAN Shanshan1, JIAN Xigao1,2,3,4*
Units: 1. School of Chemical Engineering, Dalian University of Technology; 2. Institute of Polym.Sci. & Materials Dalian University of Technology; 3.Liaoning High Performance Polymer Engineering Research Center; 4. Liaoning Key Laboratory of Polymer Science and Engineering, Dalian 116024
KeyWords: poly (phthalazione ether nitrile ketone); interfacial polymerization; composite reverse osmosis membrane; thermal stability
ClassificationCode:TQ028. 8
year,volume(issue):pagination: 2013,33(3):23-27

Abstract:
 Novel thermally stable aromatic polyamide (APA) composite reverse osmosis (RO) membranes were prepared from metaphenylene diamine and trimesoyl chloride on poly (phthalazione ether nitrile ketone) (PPENK) ultrafiltration membranes by interfacial polymerization. The effects of monomers concentration and reaction time on the performance of composite membranes were studied. Furthermore, the surface morphology and chemical structure of membranes were examined by scanning electronic microscopy and fourier transform infrared spectroscopy (FT-IR), respectively. Moreover, the thermal stability of RO membranes was also discussed. When the operation temperature increased from 20 ℃ to 95 ℃, the salt rejection of membranes was kept about 97.9%, while the flux of membranes increased from 7.4 L/m2h to 31.4 L/m2h; the flux increased first then reached a plateau and the salt rejection kept constant when RO membranes in boiling water were boiled to 3 h. In a word, APA-PPENK composite RO membranes show good thermal stability.

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AuthorIntro:
胡利杰(1985-)女,河南省新乡市人,博士生,大连理工大学化工学院,从事耐高温液体分离膜的研究,hlj19851014@yahoo.com.cn. 通讯联系人,E-mail: jian4616@dl.cn,zhangshh@dlut.edu.cn.

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