Effects of the polymer composite composition and amine-based additives on the performance of a polymer composite CO2 separation membrane

• Published in: Polymer bulletin (Berlin, Germany) Germany), 2021-01, Vol.78 (1), p.513-528
• Main Authors: Ito, Fuminori, Nishiyama, Yuriko, Duan, Shuhong, Yamada, Hidetaka
• Format: Article
• Language: English
• Subjects: Additives; Blending effects; Carbon dioxide; Characterization and Evaluation of Materials; Chemistry; Chemistry and Materials Science; Complex Fluids and Microfluidics; Composition; Global warming; Greenhouse gases; Humidification; Humidity; Membrane separation; Membranes; Microscopy; Organic Chemistry; Original Paper; Physical Chemistry; Polymer matrix composites; Polymer Sciences; Polymerization; Polymers; Polyvinyl alcohol; Reagents; Separation; Soft and Granular Matter
• ISSN: 0170-0839; 1436-2449
• DOI: 10.1007/s00289-020-03122-6

In this study, a CO 2 separation membrane was prepared by blending polyvinyl alcohol (PVA) and a water-absorbing agent. The effects of the blend composition and the addition of amine-based additives on the separation performance were examined. Membrane preparation by blending PVA and two types of water-absorbing agents promoted the permeation of CO 2 and He, while selectivity of CO 2 relative to He was slightly decreased. The addition of amine-based additives to the membrane improved the pressure resistance when pressurized from 0.1 to 0.7 MPa at 60 °C, and therefore also improved the separation performance. Changing the combination of PVA and the two types of water-absorbing agents during the preparation of the membrane materials led to a further enhancement of the separation performance. Thus, in this study, a CO 2 separation membrane with a high separation performance and a pressure resistance of up to 0.7 MPa at 60 °C under humidification was prepared.