Nanocomposite proton conducting membranes based on amphiphilic PVDF graft copolymer

Dong Kyu Roh, Jin Kyu Choi, Jong Kwan Koh, Yong Gun Shul, Jong Hak Kim

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)


A novel comb-like amphiphilic graft copolymer of poly(vinylidene fluoride-co-chlorotrifluoroethylene)-graft-poly(4-styrene sulfonic acid-co-trimethoxysilyl propyl methacrylate), i.e. P(VDF-co-CTFE)-g-P(SSA-co- TMSPMA) was synthesized using an atom transfer radical polymerization (ATRP) technique. Successful synthesis and a microphase-separated structure of the copolymer were confirmed by proton nuclear magnetic resonance (1H NMR), FTIR spectroscopy and transmission electron microscopy (TEM). This graft copolymer was combined with tetraethoxysilane (TEOS) under acidic conditions to produce organic-inorganic nanocomposite membranes through an in-situ sol-gel reaction between TEOS and PTMSPMA, as characterized by X-ray diffraction (XRD) and TEM. Upon the introduction of silica, the proton conductivity and water uptake of the membranes decreased slightly but the thermal and mechanical properties of the membranes were enhanced significantly. Various morphologies of the nanocomposite membranes were obtained after controlling the TEOS concentration, which were correlated with the thermal, mechanical and transport properties.

Original languageEnglish
Pages (from-to)271-278
Number of pages8
JournalMacromolecular Research
Issue number3
Publication statusPublished - 2010 Mar

All Science Journal Classification (ASJC) codes

  • General Chemical Engineering
  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry


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