✦ LIBER ✦

Synthesis and Characterisation of Polyamides and Polyimides from Amino/Methylene bis[Benzenamine] Styryl Pyridines

✍ Scribed by Peesapati, Venkateswarlu; Narasimha Rao, U.; Pethrick, Richard A.

Publisher: John Wiley and Sons
Year: 1997
Tongue: English
Weight: 267 KB
Volume: 43
Category: Article
ISSN: 0959-8103
DOI: 10.1002/(sici)1097-0126(199705)43:1<8::aid-pi754>3.0.co;2-2

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✦ Synopsis

Polyamides and polyimides containing diamines, with potential nonlinear optical characteristics, were prepared using (E)-4,4@- [[[2-(4-pyridinyl) ethenyl]phenyl]amino]bis[benzenamine] and (E)-4-4@- [[[2-(4-pyridinyl)ethenyl] 2-methyl phenyl]amino]bis[benzenamine] condensed with pyromellitic dianhydride to obtain poly(amic acid)s. The poly(amic acid)s were soluble in polar aprotic solvents, such as dimethylformamide, dimethylsulphoxide and dimethylacetamide, and could be cast into transparent, tough, Ñexible Ðlms. Amorphous thermally stable polyimides were formed by cyclodehydration. Similarly, (E)-4,4@- [[[2-(4-pyridinyl)

were condensed with 3-methyladipoyl chloride to obtain other new polyamides. Characterisation using infra-red and nuclear magnetic resonance spectroscopy, X-ray di †raction and thermogravimetric analysis are reported.

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