Gas permeation and physical aging properties of iptycene diamine-based microporous polyimides

• Published in: Journal of membrane science Vol. 490; pp. 321 - 327
• Main Authors: Alghunaimi, Fahd, Ghanem, Bader, Alaslai, Nasser, Swaidan, Raja, Litwiller, Eric, Pinnau, Ingo
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 15.09.2015
• Subjects: adsorption; artificial membranes; benzene; carbon dioxide; Gas separation; geometry; methane; moieties; Natural gas; nitrogen; permeability; Physical aging; Polyimides of intrinsic microporosity; polymers; porous media; surface area; Triptycene; Triptycene; Gas separation; Polyimides of intrinsic microporosity; Physical aging; Natural gas

The synthesis and gas permeation properties of two 6FDA-dianhydride-based polyimides prepared from 2,6-diaminotriptycene (6FDA–DAT1) and its extended iptycene analog (6FDA–DAT2) are reported. The additional benzene ring on the extended triptycene moiety in 6FDA–DAT2 increases the free volume over 6F...