STUDY OF POLYIMIDES PREPARED FROM 3,3',4,4'-BENZOPHENONETETRACARBOXYLIC DIANHYDRIDE AND 4,4'(ALKANE-1,N-DIYLDIOXY)DIANILINES

Authors
MAREK M SCHNEIDER B HLAVATA D LABSKY J BLEHA M
Citation
M. Marek et al., STUDY OF POLYIMIDES PREPARED FROM 3,3',4,4'-BENZOPHENONETETRACARBOXYLIC DIANHYDRIDE AND 4,4'(ALKANE-1,N-DIYLDIOXY)DIANILINES, Journal of macromolecular science. Pure and applied chemistry, A33(4), 1996, pp. 477-489
Citations number
38
Categorie Soggetti
Polymer Sciences
Journal title
Journal of macromolecular science. Pure and applied chemistry → ACNP
ISSN journal
10601325
Volume
A33
Issue
4
Year of publication
1996
Pages
477 - 489
Database
ISI
SICI code
1060-1325(1996)A33:4<477:SOPPF3>2.0.ZU;2-P
Abstract
Polyimides based on 3,3',4,4'-benzophenonetetracarboxylic dianhydride and 4,4'-(alkane-1,n-diyldioxy)dianilines were prepared via the corres ponding polyamic acids and characterized by solid-state C-13-NMR and I R spectroscopy. As shown by x-ray diffraction measurements, the polyim ides are semicrystalline whereas the polyamic acids are entirely amorp hous. Glass transition temperatures of the polyimides are lower compar ed with polyimides without flexible linkages. The polyimides are stabl e up to 400 degrees C in nitrogen atmosphere.