Antifouling poly(vinylidene fluoride) ultrafiltration membranes containing amphiphilic comb polymer additive

Jong Kwan Koh, Yong Woo Kim, Sung Hoon Ahn, Byoung Ryul Min, Jong Hak Kim

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

An amphiphilic comb polymer consisting of poly (vinylidene fluoride-co-chlorotrifluoroethylene) [P(VDF-co-CTFE)] main chains and poly(oxyethylene methacrylate) (POEM) side chains was synthesized using direct initiation of the chlorine atoms in CTFE units through atom transfer radical polymerization, as confirmed by 1H NMR and FTIR spectroscopy. The P(VDF-co-CTFE)-g-POEM comb polymer was introduced as an additive to prepare poly(vinylidene fluoride) antifouling ultrafiltration membranes. As the contents of comb polymer increased, the mechanical properties of membranes slightly decreased due to the decreased crystallinity of the membranes, as revealed by universal testing machine and X-ray diffraction. However, water contact angle measurement and X-ray photoelectron spectroscopy showed that the hydrophilic POEM segments spontaneously segregated on the membrane surfaces. As a result, the antifouling property of the membranes containing P(VDF-co-CTFE)-g-POEM comb polymer was considerably improved with a slight change of water flux.

Original languageEnglish
Pages (from-to)183-189
Number of pages7
JournalJournal of Polymer Science, Part B: Polymer Physics
Volume48
Issue number2
DOIs
Publication statusPublished - 2010 Jan 15

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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