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Synthesis and characterization of novel polyimides starting from 1,2‐ bis ( p ‐dimethylaminobenzylideneimino)alkane homologues and various dianhydrides
Author(s) -
Koytepe Süleyman,
Gök Yetkin,
Alici Bulent,
Seçkin Turgay,
Çetinkaya Engin
Publication year - 2004
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.1452
Subject(s) - moiety , condensation polymer , monomer , polymer chemistry , solubility , polymer , alkane , condensation , materials science , polyimide , organic chemistry , chemistry , catalysis , physics , layer (electronics) , thermodynamics
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 290 °C. 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. Copyright © 2004 Society of Chemical Industry