Fabrication of block copolymer membranes via SNIPS process

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

    Research output: Contribution to journalArticlepeer-review

    3 Citations (Scopus)

    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

    • General Chemical Engineering

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