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, cilt.53, ss.688-697, 2004 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 53 Konu: 6
  • Basım Tarihi: 2004
  • Doi Numarası: 10.1002/pi.1452
  • Sayfa Sayıları: ss.688-697


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.