Thermally rearranged semi-interpenetrating polymer network (TR-SIPN) membranes for gas and olefin/paraffin separation
- Authors
- Lee, Won Hee; Seong, Jong Geun; Bae, Joon Yong; Wang, Ho Hyun; Moon, Sun Ju; Jung, Jun Tae; Do, Yu Seong; Kang, Hoseong; Park, Chi Hoon; Lee, Young Moo
- Issue Date
- May-2021
- Publisher
- Elsevier B.V.
- Keywords
- Interpenetrating network; Nanostructure; Natural gas sweetening; Olefin/paraffin separation; Thermal rearrangement
- Citation
- Journal of Membrane Science, v.625, pp.1 - 13
- Indexed
- SCIE
SCOPUS
- Journal Title
- Journal of Membrane Science
- Volume
- 625
- Start Page
- 1
- End Page
- 13
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/136076
- DOI
- 10.1016/j.memsci.2021.119157
- ISSN
- 0376-7388
- Abstract
- Membrane-integrated gas separation is of great interest due to its energy-saving and economic merits. Although easy-to-process polymer membranes have shown potential, insufficient gas permeation and low stability in harsh environments limit their use in practical applications. Here, we demonstrate nanoporous and rigid semi-interpenetrating polymer networks (SIPNs) by incorporating crosslinked network into polymer matrices, accompanying interpenetration and thermal rearrangement (TR) to construct an optimized microporous structure where nanometric and sub-nanometric pores coexist parallel to the gas transport direction. The resulting TR-SIPN improves gas transport without sacrificing separation efficiency since the nanometric and sub-nanometric pores serve as molecular highways and selective bottlenecks, respectively. Furthermore, the plasticization resistance against condensable gases was enhanced due to improved polymer rigidity of the TR-SIPNs. Our study suggests wide applicability of polymer membranes for aggressive gas separations such as natural gas sweetening and olefin/paraffin separation. ? 2021
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