✦ LIBER ✦

Synthesis and properties of polybenzimidazobenzophenanthrolines

✍ Scribed by Wenle Zhou; Fengcai Lu

Publisher: John Wiley and Sons
Year: 1995
Tongue: English
Weight: 324 KB
Volume: 58
Category: Article
ISSN: 0021-8995
DOI: 10.1002/app.1995.070580919

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✦ Synopsis

Polycondensation of 1,4,5,8-naphthalenetetracarboxylic dianhydride (NTDA) with 3,3'diaminobenzidine (DAB) and 3,3'4,4'-tetraaminodiphenyl ether (TADPE), respectively, in N,N-dimethylacetamide (DMAc) at room temperature was found to produce high-viscosity polybenzimidazobenzophenanthroline (PBIPA) precursors. The PBIPA films, exhibiting excellent thermal and mechanical properties, were conveniently prepared by the heat cure of precursors. UV-vis spectra and IR spectra of PBIPA were measured. The permeability to H2, 02, and N2 of these two polymer membranes was determined at 30°C and 1 atm.

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