High performance CO2-facilitated transport membrane fabricated by compounding amine-terminated dendrimer in composite of polyvinyl alcohol and water-absorbing agent. Issue 12 (2nd December 2021)

• Record Type: Journal Article
• Authors: Ito, Fuminori; Nishiyama, Yuriko; Sugimoto, Rie; Mori, Misato; Yamada, Hidetaka
• Is Part Of: Journal of macromolecular science. Volume 58:Issue 12(2021)
• Page Start: 849
• Page End: 859
• Publication Date: 2021-12-02
• Subjects: Separation membranes -- blending -- composite polymers -- amine-based additives -- separation performance; Polymers -- Periodicals; Polymerization -- Periodicals; 547.7
• DOI: 10.1080/10601325.2021.1961589
• Languages: English
• ISSNs: 1060-1325

Abstract

Abstract: In this study, a high-performance CO2 separation membrane was fabricated by compounding amine-based additives with composite polymers composed of polyvinyl alcohol (PVA) and water-absorbing agents. First, the separation performances of several different membranes were compared; through this process, it was found that the performance was improved when sodium polyacrylate (PAANa) was added to the membrane-forming solution. The physical properties of the membranes and their constituent materials, such as water absorbency and heat tolerance, were also evaluated. The membrane prepared by compounding amine-based additives with a composite polymer produced from PVA and PAANa demonstrated the best performance. When the membrane prepared by compounding amine-based additives with the composite polymer was used to separate a CO2 –He mixture (80:20 (v/v)), the CO2 /He selectivity of the membrane exceeded 600 at a total pressure of 0.1 MPa and was approximately 200 at a total pressure of 0.7 MPa at 85 °C. Graphical Abstract: UF0001