Synthesis and characterization of novel polyimides starting from 1,2-bis(p-dimethylaminobenzylideneimino)alkane homologues and various dianhydrides

Koytepe S., Gok Y., Alici B., Seckin T., CETINKAYA E.

POLYMER INTERNATIONAL, vol.53, no.6, pp.688-697, 2004 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 53 Issue: 6
  • Publication Date: 2004
  • Doi Number: 10.1002/pi.1452
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.688-697
  • Inonu University Affiliated: Yes


The objective of this research was the preparation of polyimides from 1,2-bis(p-dimethylaminophenylimino)alkane homologues and various dianhydrides in N-methylpyrrolidone by one-stage polycondensation. The monomers were prepared via condensation of p-dimethylaminobenzaldehyde and the corresponding diamines, 1,4-diaminobutane, 1,3-diaminopropane and 1,2-diaminoethane. The influence of the incorporation of this moiety into the polymer backbone on the properties of the polyimides has been evaluated. The thermogram of the polyimides indicated that PI-10 to PI-32 had T-g values ranging from 181 to 290degreesC. The inherent viscosities of the polymers ranged from 0.99 to 2.05 dl g(-1), and the highest solubility was obtained without significant loss of the thermal properties. (C) 2004 Society of Chemical Industry.