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Fabrication and Properties of the PVDF/PVDF-g-PMMA Blend Hydrophilic Membrane

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Abstract:

An amphiphilic graft copolymer was obtained via atom transfer radical polymerization (ATRP) of methacrylate (MMA) initiated directly by polyvinylidene fluoride (PVDF). Hydrophilic PVDF membranes were prepared by immersion precipitation of PVDF-g-PMMA and PVDF blend solutions. The chemical structure and the molecular weight were characterized by 1H-NMR and GPC. The hydrophilicity of membrane surfaces were characterized by static water contact angle. Top surface and cross-section of membranes were observed by Field Emission Scanning Electron Microscope (FESEM). The results demonstrated the water contact angle of the membrane surface decreased from 89°to 67°, indicating enhanced hydrophilicity; the pure water flux water firstly decreased and then increased up to 1.7 times of the PVDF membrane. The retention of PEG (Mn=6000) could be maintained at 93%-95%.

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Materials Processing Technology, ICAMMP2011 View Preview

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Periodical:

Advanced Materials Research (Volumes 418-420)

Pages:

639-642

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.418-420.639

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Online since:

December 2011

Authors:

Tao Yuan, Jian Qiang Meng, Guo Rong Cai, Yu Feng Zhang

Keywords:

Amphiphilic Graft Copolymer, ATRP, Blend, Polyvinylidene Fluoride Membrane

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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