Fabrication of block copolymer membranes via SNIPS process

Sanghoon Woo, Jinhee Kim, Jung-hyun Lee, Joona Bang

Research output: Contribution to journalArticle

Abstract

In this work, we fabricated PS-b-P4VP block copolymer membranes from self-assembly and non-solvent induced phase separation (SNIPS), which combines the block copolymer self-assembly and conventional NIPS process. While previous studies mostly focused on the fabrication of well-defined structures, we systematically examined various processing parameters such as polymer concentration, solvent evaporation duration, solvent composition, and humidity, to optimized the membrane structures. As a result, the morphology of PS-b-P4VP membranes was optimized at a certain polymer concentration in solution and composition of volatile solvent at low humidity conditions, resulting in SNIPS separation membranes with well-defined nanopores on the surface, 75% of membrane porosity, and 18% of surface porosity.

Original languageEnglish
Pages (from-to)214-219
Number of pages6
JournalKorean Chemical Engineering Research
Volume55
Issue number2
DOIs
Publication statusPublished - 2017 Apr 1

Keywords

  • Block copolymer membrane
  • PS-b-P4VP
  • Relative humidity
  • SNIPS

ASJC Scopus subject areas

  • Chemical Engineering(all)

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