Morphology control of aromatic polyimide by using reaction-induced phase separation of oligomers

Kanji Wakabayashi, Shinichi Yamazaki, Kunio Kimura

Research output: Contribution to conferencePaperpeer-review

1 Citation (Scopus)


We had reported that lozenge-shaped crystals and microspheres of poly(p-phenylene pyromelliteimide) were prepared by means of reaction-induced phase separation of oligomers during solution polymerization. These morphologies could be controlled on the basis of the miscibility between solvent and oligomers. In this paper, we investigated on the morphology control of Kapton by using the phase separation of oligomer during polymerization. Microspheres of Kapton were obtained in an aromatic solvent at a concentration of 3.0 wt/vol%. In contrast to this, lath-like crystals and spheres composed of plate-like crystals were obtained at a concentration of 0.5 wt/vol%. These products exhibited high crystallinity and possessed high heat-resistance. Influences of solvent and polymerization temperature on the morphology were also presented.

Original languageEnglish
Number of pages1
Publication statusPublished - Dec 1 2005
Event54th SPSJ Annual Meeting 2005 - Yokohama, Japan
Duration: May 25 2005May 27 2005


Other54th SPSJ Annual Meeting 2005


  • Morphology
  • Phase separation
  • Polyimide

ASJC Scopus subject areas

  • Engineering(all)


Dive into the research topics of 'Morphology control of aromatic polyimide by using reaction-induced phase separation of oligomers'. Together they form a unique fingerprint.

Cite this