Synthesis of poly(imides)in supercritical carbon dioxide

Authors
Said-Galiev, EE Vygodskii, YS Nikitin, LN Vinokur, RA Gallyamov, MO Khokhlov, AR
Citation
Ee. Said-galiev et al., Synthesis of poly(imides)in supercritical carbon dioxide, POLYM SCI B, 43(7-8), 2001, pp. 227-229
Citations number
4
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
POLYMER SCIENCE SERIES B
ISSN journal
15600904 → ACNP
Volume
43
Issue
7-8
Year of publication
2001
Pages
227 - 229
Database
ISI
SICI code
1560-0904(200107/08)43:7-8<227:SOPSCD>2.0.ZU;2-X
Abstract
Poly(imides) with a quantitative yield were produced by the polycycloconden sation of dianhydride 6F, diamine 6F, and 9,9-bis(4'-aminophenyl)fluorene i n supercritical carbon dioxide (32.5 MPa, 180 degreesC). The synthesized po lymers have an inherent viscosity up to 0.43 dl/g, M-w = 12.4 x 10(3), M-n = 4.7 x 10(3), and M-w/M-n = 2.6. It is suggested that, in the presence of traces of water, supercritical carbon dioxide plays the role of a catalyst in the formation of poly(imides).