Free Volume and Gas Permeation in Anthracene Maleimide-Based Polymers of Intrinsic Microporosity

Membranes

Muntazim Munir Khan¹  Volkan Filiz¹  Thomas Emmler¹  Volker Abetz¹  Toenjes Koschine²  Klaus Rätzke²  Franz Faupel²  Werner Egger³  Luca Ravelli³ 

[1] Institute of Polymer Research, Helmholtz-Zentrum Geesthacht, Max-Planck-Str. 1, 21502 Geesthacht, Germany; E-Mails:;Institute of Materials Science, University of Kiel, Technical Faculty, Chair for Multicomponent Materials, Kaiserstr. 2, 24143 Kiel, Germany; E-Mails:;Institut für Angewandte Physik und Messtechnik, Universität der Bundeswehr München, 85577 Neubiberg, Germany; E-Mails:

关键词: polymer of intrinsic microporosity;    free volume;    antharcene maleimide;    membranes;    PALS;   

DOI  :  10.3390/membranes5020214

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.