Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/70143
標題: Fabrication of polyphenylsulfone/polyetherimide blend membranes for ultrafiltration applications: The effects of blending ratio on membrane properties and humic acid removal performance
作者: Hwang, L.L.
Tseng, H.H.
Chen, J.C.
關鍵字: Humic acid
Surface charge modification
Hydrophilicity
Membrane
morphology
Antifouling
cellulose-acetate membranes
surface-morphology
phase-separation
flux
recovery
water
substances
additives
inversion
diagram
期刊/報告no:: Journal of Membrane Science, Volume 384, Issue 1-2, Page(s) 72-81.
摘要: In this study, a blending technique was employed to prepare an antifouling ultrafiltration membrane for humic acid (HA) separation. Using a nonsolvent induced phase separation method, negatively charged/hydrophobic polyphenylsulfone (PPSU) was blended with positively charged/hydrophilic polyetherimide (PEI) to form PPSU/PEI blend membranes. Depending on the blending ratio, the membrane surface properties, such as morphology, hydrophilicity, roughness, and surface charge, were tailored to improve the resistance of the membrane to fouling. For example, the blend membranes possessed a weak negative charge and exhibited good resistance to the negatively charged HA due to the effect of electrostatic repulsion. As the PEI content increased, the hydrophilic PEI segregated to the membrane/water interfaces, creating a hydrophilic surface and changing the surface charge from negative to neutral. (C) 2011 Elsevier B.V. All rights reserved.
URI: http://hdl.handle.net/11455/70143
ISSN: 0376-7388
文章連結: http://dx.doi.org/10.1016/j.memsci.2011.09.005
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