Preparation and characterization of POSS-PEG high performance membranes for gas separation
- Authors
- Kim, Ji Hyeon; Vijayakumar, Vijayalekshmi; Kim, Deuk Ju; Nam, Sang Yong
- Issue Date
- 1-Jul-2020
- Publisher
- Elsevier BV
- Keywords
- Gas separation; Membrane; Polyethylene glycol; Polyhedral oligomeric; Selectivity; Silsesquioxanes
- Citation
- Journal of Membrane Science, v.606
- Indexed
- SCIE
SCOPUS
- Journal Title
- Journal of Membrane Science
- Volume
- 606
- URI
- https://scholarworks.gnu.ac.kr/handle/sw.gnu/6416
- DOI
- 10.1016/j.memsci.2020.118115
- ISSN
- 0376-7388
1873-3123
- Abstract
- The efficient CO2 separation process depends on the trade-off among permeability and selectivity requirements. In this work, copolymers of polyhedral oligomeric silsesquioxanes (POSS) with cage-like rigid structure and polyethylene glycol (PEG) with good CO2 affinity were synthesized by introducing allyl-POSS and allyl-EO into the side chain of polymethylhydrosiloxane (PMHS) in different proportions. The POSS80PEG20 copolymer fashioned into membrane showed good CO2 separation performance (permeability of 679 barrer and CO2/N2 selectivity of 38.1). The effect of POSS content on morphology, thermal stability and mechanical properties was also investigated. Multilayered composite membranes using POSS80PEG20 copolymer of different concentration as a selective layer, polyacrylonitrile (PAN) support layer and polydimethylsiloxane (PDMS) middle layer were also fabricated to achieve improved mechanical stability. The composite membrane with selective layer concentration of 0.25 wt% (POSS-PEG-0.25) offered optimum CO2/N2 and CO2/O2 selectivity performances. Moreover, the effect of feed pressure on mixed gas permeance was also reported. © 2020 Elsevier B.V.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - 공학계열 > Dept.of Materials Engineering and Convergence Technology > Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.gnu.ac.kr/handle/sw.gnu/6416)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.