期刊
POLYMERS FOR ADVANCED TECHNOLOGIES
卷 24, 期 10, 页码 934-944出版社
WILEY
DOI: 10.1002/pat.3167
关键词
poly (vinylidene fluoride); microgel; pH-sensitivity; poly (acrylic acid); antifouling property
资金
- National Natural Science Foundation of China [51003076]
- Science and Technology Commission Foundation of Tianjin [10JCZDJC22000, 10JCZDJC17100]
pH-sensitive poly (vinylidene fluoride) (PVDF)/poly (acrylic acid) (PAA) microgels membranes are prepared by phase inversion of the N, N-dimethylformamide solution containing PAA microgels and PVDF in aqueous solution. The composition and structure of the blend membrane are investigated by Fourier transform infrared spectra, X-ray photoelectron spectroscopy measurements, thermo gravimetric analysis, field-emission scanning electron microscope and atomic force microscope. The results indicate the surface and cross section of the blend membranes have a porous structure with PAA microgels immobilized inside the pore and on the membrane surface. The blend PVDF membranes exhibit pH-sensitive water flux, with the most drastic change in permeability observed between pH3.7 and 6.3. The blend membranes are fouled by bovine serum albumin, and their antifouling property is enhanced by increasing PAA microgels, mainly derived from the improved hydrophilic property. Copyright (c) 2013 John Wiley & Sons, Ltd.
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