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

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 volu...

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Detalles Bibliográficos
Autores principales: Khan, Muntazim Munir, Filiz, Volkan, Emmler, Thomas, Abetz, Volker, Koschine, Toenjes, Rätzke, Klaus, Faupel, Franz, Egger, Werner, Ravelli, Luca
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2015
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4496641/
https://www.ncbi.nlm.nih.gov/pubmed/26030881
http://dx.doi.org/10.3390/membranes5020214
Descripción
Sumario: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.

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