Miscible blends of carboxylated polymers of intrinsic microporosity (cPIM-1) and Matrimid

Wai Fen Yong, Tai Shung Chung*

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    58 Scopus citations

    Abstract

    Miscible blends of Matrimid and carboxylated polymers of intrinsic microporosity (cPIM-1) at the molecular level have been discovered. Their miscibility has been confirmed by polarized light microscopy (PLM), atomic force microscopy (AFM), differential scanning calorimetry (DSC), Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD). The existence of hydrogen bonding promotes compatibility between these two polymers. A good agreement between experimental and predicted data on gas permeability and selectivity is observed. The addition of cPIM-1 in Matrimid significantly enhances the plasticization pressure for all blended membranes. A small loading of 5-10 wt% of cPIM-1 in Matrimid improves the plasticization pressure from less than 10 atm-15 atm while a higher loading of cPIM-1 shifts the plasticization pressure to 20 atm.

    Original languageEnglish (US)
    Pages (from-to)290-297
    Number of pages8
    JournalPolymer
    Volume59
    DOIs
    StatePublished - Feb 24 2015

    Keywords

    • Hydrogen bonding
    • Miscibility
    • Polyimides

    ASJC Scopus subject areas

    • Materials Chemistry
    • Polymers and Plastics
    • Organic Chemistry

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