화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Chemical Engineering, Vol.39, No.3, 475-483, March, 2022
DOI10.1007/s11814-021-0991-1  Export Citation
Tailoring physical and chemical microenvironments by polyether-aminein blended membranes for efficient CO2 separation
Xia Lv1, Xueqin Li1, †, Lu Huang1, Siyuan Ding1, Jinli Zhang1, 2, †, and Yin Lv1
  • 1School of Chemistry and Chemical Engineering, Shihezi University, Shihezi, Xinjiang, 832003, China
  • 2Key Laboratory for Green Chemical Technology of Ministry of Education, Tianjin University, Tianjin 300072, China
E-mail:,
Pebax® MH 1657 (Pebax)-based blend membranes with different polyether-amine (PEA) loadings were designed and fabricated for efficient CO2 separation. The CO2 separation performance of Pebax/PEA blend membranes was greatly improved in comparison with that of pure membranes. This was mainly because the introduced PEA tailored the physical and chemical microenvironments in blend membranes. Specifically, PEA was a liquid-like additive,which was beneficial to reduce the mass transfer resistance of gases and increase CO2 permeability. Meanwhile, PEA contained amino groups that acted as mobile carriers to tailor the chemical microenvironment in blend membranes. The mobile carriers preferentially reacted reversibly with CO2 molecules, facilitating CO2 transport in membranes. Compared with CO2/CH4 separation performance of pure Pebax membrane, CO2 permeability and CO2/CH4 separation factor of Pebax/PEA-3 increased by 144.8% and 29.4%, respectively. This study suggests that PEA is a promising membrane material for tailoring the physical and chemical microenvironments in blend membranes for efficient CO2 separation.
Keywords:Pebax;Polyether-amine;Blend Membrane;Microenvironments;CO2 Separation
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