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

55 Scopus citations


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
StatePublished - Feb 24 2015

Bibliographical note

Publisher Copyright:
© 2015 Elsevier Ltd . All rights reserved.


  • Hydrogen bonding
  • Miscibility
  • Polyimides

ASJC Scopus subject areas

  • Materials Chemistry
  • Polymers and Plastics
  • Organic Chemistry


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