Plasticization- and Aging-Resistant Phenolphthalein-Based Thermally Cross-Linked PIM Polyimide Membranes for Efficient CO<sub>2</sub> Separation
A series of phenolphthalein-based polyimide membranes with kinked spirobisindane and sterically bulky durene diamine (DDA) moieties were synthesized and then cross-linked via controlled thermal heating. The gas permeability and diffusivity of the copolymer membranes increased with an increasing DDA content, and the thermally treated cross-linked membranes showed further enhancements in these parameters. The cross-linked membrane with a DDA loading of 75 mol % exhibited a CO2 permeability of 1366.3 Barrer and CO2/N2 and CO2/CH4 selectivities of 20 and 14.5, respectively, approaching the 2008 Robeson upper bound and surpassing the separation performance of most phenolphthalein-based polyimide polymers. Furthermore, this membrane demonstrated strong resistance to physical aging up to 41 days and displayed stability against plasticization up to 20 atm.
Authors
- Senthil Kannan (ORCID: https://orcid.org/0000-0002-4169-9351)
- Ho Bum Park (ORCID: https://orcid.org/0000-0002-8003-9698)
- Iqubal Hossain (ORCID: https://orcid.org/0000-0002-1363-8527)
- Taehyun Kwon (ORCID: https://orcid.org/0000-0002-7402-027X)
- Ook Choi
- Kavya Adot Veetil (ORCID: https://orcid.org/0009-0003-6514-6297)
- Tae‐Hyun Kim (ORCID: https://orcid.org/0000-0002-1654-3785)
- Kwan Il Kim
- Md. Homayun Kabir (ORCID: https://orcid.org/0000-0003-3093-128X)
Institutions
- Incheon National University (KR)
- Pabna University of Science and Technology (BD)
- Hanyang University (KR)
Publication Details
- Journal
- ACS Applied Polymer Materials
- Published
- 2024-12-23
- DOI
- https://doi.org/10.1021/acsapm.4c03149
- Citations
- 4
- Primary Topic
- Membrane Separation and Gas Transport
- Type
- article
- Field-Weighted Citation Impact
- 0.85
Funders
- Incheon National University