Pure- and mixed-gas permeation properties of highly selective and plasticization resistant hydroxyl-diamine-based 6FDA polyimides for CO2/CH4 separation

• Published in: Journal of membrane science Vol. 505; pp. 100 - 107
• Main Authors: Alaslai, Nasser, Ghanem, Bader, Alghunaimi, Fahd, Litwiller, Eric, Pinnau, Ingo
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.05.2016
• Subjects: 6FDA; adsorption; artificial membranes; carbon dioxide; hydrogen; Hydroxyl functionalization; methane; Mixed-gas permeation; moieties; Natural gas; nitrogen; oxygen; permeability; Plasticization; Polyimides; polymers; resorcinol; 6FDA; Mixed-gas permeation; Hydroxyl functionalization; Plasticization; Natural gas; Polyimides

The effect of hydroxyl functionalization on the m-phenylene diamine moiety of 6FDA dianhydride-based polyimides was investigated for gas separation applications. Pure-gas permeability coefficients of He, H2, N2, O2, CH4, and CO2 were measured at 35°C and 2atm. The introduction of hydroxyl groups in...