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Chinese Journal of Polymer Science

, Volume 36, Issue 7, pp 880–887 | Cite as

Vertically Oriented Microporous Membranes Prepared by Bidirectional Freezing

  • Sen-He Chen
  • Bai-Heng Wu
  • Jin-Cheng Fu
  • Guo-Jun Wang
  • Ling-Shu Wan
  • Zhi-Kang Xu
Article
  • 31 Downloads

Abstract

Polystyrene membranes with precisely controlled and vertically oriented pores are fabricated by a bidirectional freezing process. In this process, the influence of polymer in growth of diphenyl sulfone (DPS) crystals has been demonstrated by XRD and simulated by DFT based on the interaction between DPS crystal faces and polystyrene (PS). The influence of temperature gradient on membrane structures is also elucidated. Compared to the original membrane and modified traditional membranes, modified PS membranes with vertically oriented pores show large and stable fluxes in the processes of multiple oil and water separation.

Keywords

Separation membrane Vertical pores Bidirectional freezing Oil separation 

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Notes

Acknowledgments

This work was financially supported by the National Natural Science Foundation of China (Nos. 51522305 and 21374100) and the Fundamental Research Funds for the Central Universities (No. 2015XZZX004-26).

Supplementary material

10118_2018_2113_MOESM1_ESM.pdf (2.2 mb)
Vertically Oriented Microporous Membranes Prepared by Bidirectional Freezing

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Copyright information

© Chinese Chemical Society, Institute of Chemistry, Chinese Academy of Sciences and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Sen-He Chen
    • 1
    • 2
  • Bai-Heng Wu
    • 1
    • 2
  • Jin-Cheng Fu
    • 1
    • 2
  • Guo-Jun Wang
    • 1
    • 2
  • Ling-Shu Wan
    • 1
    • 2
  • Zhi-Kang Xu
    • 1
    • 2
  1. 1.Ministry of Education Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and EngineeringZhejiang UniversityHangzhouChina
  2. 2.Key Laboratory of Adsorption and Separation Materials &Technologies of Zhejiang ProvinceZhejiang UniversityHangzhouChina

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