Mh. Yi et al., Synthesis and characterization of soluble polyimides from 2,2-bis(4-aminophenyl)cycloalkane derivatives, J POL SC PC, 37(17), 1999, pp. 3449-3454
Citations number
9
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
New aromatic diamines [(1) and (2)] containing polycycloalkane structures b
etween two benzene rings were synthesized by HCl-catalyzed condensation rea
ction of aniline hydrochloride and corresponding polycycloalkanone derivati
ves. The structures of diamines were identified by H-1-NMR, C-13-NMR, FTIR
spectroscopy, and elemental analysis. The polyimides were synthesized from
the obtained diamines with various aromatic dianhydrides by one-step polyme
rization in m-cresol. The inherent viscosities of the resulting polyimides
were in the range of 0.34-1.02 dL/g. The polyimides showed good thermal sta
bilities and solubility. All the polymers were readily soluble in N-methyl-
2-pyrrolidone, m-cresol, tetrachloroethane, etc. Some of them were soluble
even in chloroform at room temperature. The glass transition temperatures w
ere observed in the range of 323-363 degrees C, and all of the polymers wer
e stable up to 400 degrees C under nitrogen atmosphere. (C) 1999 John Wiley
& Sons, Inc.