Keywords
gas separation characteristics
hollow fiber
membrane
poly(o-aminophenylene)naphthoylenimide
polynaphthoylenebenzimidazole
rheology
Abstract
For the first time, hollow fiber polynaphthoylenebenzimidazole (PNBI) membranes were obtained by a two-stage acid-free method through a precursor fiber made of poly(o-aminophenylene)naphthoylenimide (PANI-O) by its subsequent heat treatment, leading to the formation of PNBI. The gas separation characteristics of such fiber at room temperature for H2, He, O2 and CO2 were studied by an integral method. It was shown that PNBI is one of the most promising polymers for the manufacture of thermally stable gas separation membranes with high productivity.
Funders
Russian Science Foundation
23-19-00222
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