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Journal of Polymer Research

, 26:28 | Cite as

Effects of modified nano-silica on the microstructure of PVDF and its microporous membranes

  • Meng Zhao
  • Zhou-Zhi Ren
  • Ming-Bo YangEmail author
  • Wei Yang
ORIGINAL PAPER
  • 65 Downloads

Abstract

In this study, effects of modified silica on the microstructure of polyvinylidene fluoride and its microporous membranes were investigated. The silica was modified by 3-Methacryloxypropyltrimethoxysilane to improve its compatibility with the polyvinylidene fluoride matrix. The relaxation time of polyvinylidene fluoride was markedly improved by modified nano-silica, especially at the loading of 0.1 wt‰. Effects of the modified silica on the nanocomposite microstructure, such as crystallization and orientation behavior, were studied in the manuscript. Furthermore, adding 3-Methacryloxypropyltrimethoxysilane modified silica could effectively handicap the relaxation of orientation structure in polyvinylidene fluoride and facilitate the formation of uniform lamellar structures which could be described by two-dimensional small-angle X-ray scattering testing. Finally, casting films with more uniform lamellar structure was also in favor of fabricating polyvinylidene fluoride microporous membranes by melt-stretching method.

Keywords

Polyvinylidene fluoride Modified silica Crystalline microstructure Orientation Microporous membrane 

Notes

Acknowledgements

The authors sincerely acknowledge the financial support of National Natural Science Foundation of China (Grant number 51721091,21674069 and 21174092).

Supplementary material

10965_2018_1681_MOESM1_ESM.docx (1000 kb)
ESM 1 (DOCX 999 kb)

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Copyright information

© The Polymer Society, Taipei 2019

Authors and Affiliations

  1. 1.College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengduPeople’s Republic of China

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