Influence of the molecular polyimide brush on the gas separation properties of polyphenylene oxide

0505461 - ÚMCH 2020 RIV RU eng J - Journal Article
Tyan, N. S. - Polotskaya, G. A. - Meleshko, T. K. - Yakimansky, A. V. - Pientka, Zbyněk
Influence of the molecular polyimide brush on the gas separation properties of polyphenylene oxide.
Russian Journal of Applied Chemistry. Roč. 92, č. 3 (2019), s. 360-366. ISSN 1070-4272. E-ISSN 1608-3296
Institutional support: RVO:61389013
Keywords : gas separation * membranes * graft copolyimides
OECD category: Polymer science
Impact factor: 0.690, year: 2019
Method of publishing: Limited access
https://link.springer.com/article/10.1134%2FS1070427219030066

A new hybrid gas separation membrane was prepared from poly(2,6-dimethyl-1,4-phenylene oxide) modified with graft copolyimide with side poly(methyl methacrylate) chains. The changes in the membrane structure on introducing up to 15 wt % modifier were evaluated by atomic force microscopy and density measurements. The microphase separation in modified polyphenylene oxide films was demonstrated. Introduction of graft copolyimide leads to an increase in the density of the hybrid films. The gas transport properties of the membranes were evaluated for H2, CO2, O2, O4, and N2. Introduction of up to 10 wt % modifier does not noticeably alter the permeability of the hybrid membranes to all the gases but increases the selectivity in gas separation.
Permanent Link: http://hdl.handle.net/11104/0296957