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Synthesis and characterization of crosslinkable polyimides

Authors
Journal
European Polymer Journal
0014-3057
Publisher
Elsevier
Publication Date
Volume
44
Issue
3
Identifiers
DOI: 10.1016/j.eurpolymj.2007.12.018
Keywords
  • Polyimides
  • Crosslinking
  • Dielectric Properties
  • Glass Transition Temperature
Disciplines
  • Chemistry

Abstract

Abstract A series of copolyimides were prepared from benzophenone-3,3′,4,4′-tetracarboxylic dianhydride (BTDA) and various aromatic diamines which contain a fluorenyl group and/or alkyl substituents in ortho position to the amine groups. The effect of the chemical composition on the glass transition temperature ( T g), thermal stability as well as on the dielectric constant of these polymers was studied. High T g polymers ( T g ranging from 260 °C to 370 °C), withstanding temperatures as high as 400 °C for 10 h and having a low dielectric constant (from 2.6 to 3.1) were successfully synthesized. All these polymers were able to crosslink under UV or thermal treatments.

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