Plasticization- and Aging-Resistant Phenolphthalein-Based Thermally Cross-Linked PIM Polyimide Membranes for Efficient CO2 Separation
Source abstract
Abstract
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 CO 2 permeability of 1366.3 Barrer and CO 2 /N 2 and CO 2 /CH 4 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.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Membrane Separation and Gas Transport · Synthesis and properties of polymers · Graphene research and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Chemistry, Incheon National University, 119 Academy-ro, Yeonsu-gu, Incheon 22012, Republic of Korea
Research Institute of Basic Sciences, Core Research Institute, Incheon National University, 119 Academy-ro, Yeonsu-gu, Incheon 22012, Republic of Korea
Department of Chemistry, Pabna University of Science and Technology, Pabna 6600, Bangladesh
Department of Energy Engineering, Hanyang University, Seoul 04763, Republic of Korea
Funding
Incheon National University
References (50)
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