Solid-state polycondensation of aromatic polyimide by means of crystallization of oligomers during solution polymerization

Kanji Wakabayashi, Shinichi Yamazaki, Kunio Kimura

Research output: Contribution to conferencePaperpeer-review

1 Citation (Scopus)

Abstract

Poly(4,4'-oxydiphenylene pyromelliteimide)(PI(PMDA/DPE)) were prepared from PMDA and DPE as monomers at condition of 0.50% and 280°C in TS10 (mixture of isomers of dibenzyltoluene). Lath-like crystals and particles composed with plate-like crystals were obtained via the crystallization of oligomers during solution polymerization. The products exhibited high crystallinity and high inherent viscosity of 1.17 dig-1. This implies solid-state polymerization effectively progressed in the crystals of oligomer, because the chain ends in the oligomers crystal were advantageously arranged for polycondensation reaction.

Original languageEnglish
Number of pages1
Publication statusPublished - Dec 1 2005
Event54th SPSJ Symposium on Macromolecules - Yamagata, Japan
Duration: Sep 20 2005Sep 22 2005

Other

Other54th SPSJ Symposium on Macromolecules
CountryJapan
CityYamagata
Period9/20/059/22/05

Keywords

  • Crystallization
  • Kapton
  • Oligomer
  • Phase separation
  • Polyimide
  • Solid-state polymerization

ASJC Scopus subject areas

  • Engineering(all)

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