화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Macromolecular Research, Vol.28, No.5, 445-449, May, 2020
DOI10.1007/s13233-020-8057-5  Export Citation
Structural Effect of Ionic Liquid on Long-Term Stability in Poly(ethylene oxide)/Ag Ions/Ag Nanoparticles Composite for Olefin Separation
Hyunsik Jeon1, Younghyun Cho2, †, and Sang Wook Kang1, 3, †
  • 1Department of Chemistry, Sangmyung University, Seoul 03016, Korea
  • 2Department of Energy Systems Engineering, Soonchunhyang University, Asan, 31538, Korea
  • 3Department of Chemistry and Energy Engineering, Sangmyung University, Seoul 03016, Korea
E-mail:,
In this study, the effect of ionic liquid cation on the long-term stability of membranes was investigated using 1-methyl-3-octylimidazolium tetrafluoroborate (MOIM+BF4-). The initial permeance of the poly(ethylene oxide) (PEO)/AgBF4/MOIM+BF4-membrane was 17 gas permeation unit (GPU), but after 100 hours of gas permeation experiment, it showed a low permeance of 5.3 GPU. Uv-vis spectra also showed that MOIM+BF4- could not prevent aggregation of silver nanoparticles. This indicated that the MOIM+BF4- in the membrane could not stabilize the silver nanoparticles and thus the silver nanoparticles were aggregated and acted as a gas permeation barrier. MOIM+BF4- could not stabilize the surface of silver nanoparticles because of the long chain length of the cation. This indicated that the cation of the ionic liquid, especially carbon length, was main factor affecting the stability of separation performance with time for polymer/silver salt/ionic liquid complex membranes.
Keywords:facilitated transport;carrier;membrane;ionic liquid;Ag
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