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论文类型：期刊论文

发表时间：2011-03-15

发表刊物：JOURNAL OF MEMBRANE SCIENCE

收录刊物：Scopus、SCIE、EI

卷号：370

期号：1-2

页面范围：91-96

ISSN号：0376-7388

关键字：Copoly(phthalazinone biphenyl ether sulfone); Nanofiltration membrane; Interfacial polymerization; Thermal stability

摘要：Copoly(phthalazinone biphenyl ether sulfone) (PPBES) with excellent performance is utilized to fabricate the substrate membrane of the composite nanofiltration (NF) membrane and the functional layer of the NF membrane is prepared by the interfacial polymerization from piperazine (PIP) and trimesoyl chloride (TMC). The performances of the substrate ultrafiltration (UF) membrane such as molecular weight cut-off (MWCO) and hydrophilicity are also studied to improve the composite membrane performance. When the composite membrane is prepared under optimized conditions and tested at 1.0 MPa and 20 degrees C, the flux of the composite NF membrane is about 77 L/m(2) h and the Na(2)SO(4) rejection of it is about 97.5%. The surface morphologies of the composite membrane and substrate membrane are observed by scanning electron microscopy (SEM). The flux is increased from 61 to 290 L/m(2) h with the rejection of the membrane decreases 3.8% when the operation temperature increases from 18 degrees C to 85 degrees C at 1.0 MPa. (C) 2011 Elsevier B.V. All rights reserved.