Citation: Jian-hua Wang, Yong-hua Zhang, You-yi Xu, Bao-ku Zhu, Hong Xu. Fabrication of Hydrophilic and Sponge-like PVDF/Brush-like Copolymer Blend Membranes Using Triethylphosphate as Solvent[J]. Chinese Journal of Polymer Science, ;2014, 32(2): 143-150. doi: 10.1007/s10118-014-1371-7 shu

Fabrication of Hydrophilic and Sponge-like PVDF/Brush-like Copolymer Blend Membranes Using Triethylphosphate as Solvent

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MOE Key Laboratory of Macromolecular Synthesis and Functionalization MOE Engineering Research Center of Membrane and Water Treatment Technology Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China

Corresponding author: Bao-ku Zhu, ms630@zju.edu.cn
Received Date: 27 February 2013
Revised Date: 9 May 2013

Fund Project: Program (No. 2009CB623402), Key Innovation Team for Science and Technology of Zhejiang Province, China (No. 2009R50047) and Postdoctoral Science Foundation funded project of Zhejiang Province, China (No. Bsh1202045).

Porous PVDF blend membranes with good hydrophilicity and a symmetric structure were prepared by the phase inversion method using amphiphilic brush-like copolymers, P(MMA-r-PEGMA), as hydrophilic additive and triethylphosphate (TEP) as solvent. P(MMA-r-PEGMA) was synthesized by radical polymerization in TEP. Then the obtained amphiphilic copolymer solution was mixed with PVDF and TEP to prepare the dope solution. The effects of P(MMA-r-PEGMA) content and coagulation composition on membrane morphologies were investigated using scanning electron microscopy (SEM). The results demonstrated that, even blended with amphiphilic copolymers, a symmetric structure can be formed. Hollow fiber membranes with a mainly symmetric structure were also fabricated. The dry hollow fiber membranes showed good hydrophilicity, high flux and good rejection performance because of their hydrophilic surface and pores wall.
- Poly(vinylidene ?uoride),
- Membrane,
- Triethylphosphate,
- Hydrophilicity,
- Amphiphilic copolymer
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