期刊
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
卷 49, 期 2, 页码 790-796出版社
AMER CHEMICAL SOC
DOI: 10.1021/ie900560e
关键词
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资金
- State Key Laboratory of Precision Measuring Technology and Instruments
- Programme of introducing Talents of Discipline to Universities [B06006]
- Drug Separation and Purification Project in Programme for Development of Novel Drug [2009ZX09301-008]
To improve the surface coverage of polyvinylpyrrolidone (PVP) on membrane surfaces and further enhance the antifouling property, silica-PVP nanocomposite was synthesized and used as a novel hydrophilic additive to modify polyethersulfone (PES) membranes. Transmission electron microscopy (TEM) observation showed that PES membranes, using additives of PVP and silica-PVP nanocomposites, have similar asymmetric Structures. X-ray photoelectron spectroscopy (XPS) measurement indicated that the near-surface coverage of PVP for PES membrane with a silica-PVP nanocomposite additive is greater than that with a PVP additive. Protein Ultrafiltration experiment also showed that the antifouling ability of PES membrane with a silica-PVP nanocomposite additive is stronger than that with a PVP additive. The hydrophilic modification with a silica-PVP nanocomposite is all appropriate method for improved antifouling property of PES Ultrafiltration membranes.
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