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Fabrication of hydrophilic and sponge-like PVDF/brush-like copolymer blend membranes using triethylphosphate as solvent

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Abstract

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.

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Authors and Affiliations

  1. 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

    Jian-hua Wang, Yong-hua Zhang, You-yi Xu, Bao-ku Zhu  (朱宝库) & Hong Xu

Authors
  1. Jian-hua Wang
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  2. Yong-hua Zhang
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  3. You-yi Xu
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  4. Bao-ku Zhu  (朱宝库)
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  5. Hong Xu
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Corresponding author

Correspondence to Bao-ku Zhu  (朱宝库).

Additional information

This work was financially supported by the National Natural Science Foundation of China (No. 20974094), National 973 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).

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Wang, Jh., Zhang, Yh., Xu, Yy. et al. Fabrication of hydrophilic and sponge-like PVDF/brush-like copolymer blend membranes using triethylphosphate as solvent. Chin J Polym Sci 32, 143–150 (2014). https://doi.org/10.1007/s10118-014-1371-7

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  • DOI: https://doi.org/10.1007/s10118-014-1371-7

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