LYOTROPIC BLOCK-COPOLYMERS OF POLY(P-BENZAMIDE) AND POLY[2-PHENYLENE(5-BENZIMIDAZOLE)] - THE TERNARY-SYSTEM COPOLYMER POLY(P-BENZAMIDE) DIMETHYLACETAMIDE LITHIUM-CHLORIDE

Authors
CONIO G BISBANO S MARSANO E TEALDI A BIANCHI E
Citation
G. Conio et al., LYOTROPIC BLOCK-COPOLYMERS OF POLY(P-BENZAMIDE) AND POLY[2-PHENYLENE(5-BENZIMIDAZOLE)] - THE TERNARY-SYSTEM COPOLYMER POLY(P-BENZAMIDE) DIMETHYLACETAMIDE LITHIUM-CHLORIDE, Polymer, 39(11), 1998, pp. 2119-2122
Citations number
12
Categorie Soggetti
Polymer Sciences
Journal title
Polymer → ACNP
ISSN journal
00323861
Volume
39
Issue
11
Year of publication
1998
Pages
2119 - 2122
Database
ISI
SICI code
0032-3861(1998)39:11<2119:LBOPAP>2.0.ZU;2-B
Abstract
New rigid-flexible copolymers based on poly(p-benzamide) (PBA) and pol y[2-phenylene (5-benzimidazole)] (PABI) were synthesized, varying the molecular weight of the flexible block. Ternary solutions in dimethyla cetamide-3% LiCl show the peculiar behaviour expected theoretically fo r this kind of system. In particular, it was demonstrated that more co polymer enters the anisotropic phase as the PABI chain length becomes shorter. Comparison with homopolymer mixtures shows the usefulness of the copolymer in improving the amount of flexible chains inside the me sophase. (C) 1998 Published by Elsevier Science Ltd. All rights reserv ed.