1. Free Volume and Gas Permeation in Anthracene Maleimide-Based Polymers of Intrinsic Microporosity
- Author
-
Muntazim Munir Khan, Volkan Filiz, Thomas Emmler, Volker Abetz, Toenjes Koschine, Klaus Rätzke, Franz Faupel, Werner Egger, and Luca Ravelli
- Subjects
polymer of intrinsic microporosity ,free volume ,antharcene maleimide ,membranes ,PALS ,Chemical technology ,TP1-1185 ,Chemical engineering ,TP155-156 - Abstract
High free-volume copolymers were prepared via polycondensation with 2,3,5,6,-tetrafluoroterephthalonitrile (TFTPN) in which a portion of the 3,3,3',3'-tetramethyl-1,1'-spirobisindane (TTSBI) of PIM-1 was replaced with dibutyl anthracene maleimide (4bIII). An investigation of free volume using positron annihilation lifetime spectroscopy (PALS), and gas permeation measurements was carried out for the thin film composite copolymer membranes and compared to PIM-1. The average free volume hole size and the gas permeance of the copolymer membranes increased with decreasing TTSBI content in the copolymer.
- Published
- 2015
- Full Text
- View/download PDF