Morphology control of polyimides by using phase separation during polymerization

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Polyimides are useful high-performance plastics, and their properties are strongly influenced by the morphology including molecular orientation The morphology control of polyimide is required to create structural materials and devices. This study provides the new procedure to control the morphology by using oligomer phase separation during solution polymerization in poor solvents. When the molecular weight of the oligomers exceeds a critical value, the oligomers are phase-separated through super-saturated state. If they are precipitated via crystallization, the crystals having high molecular weight are formed by the subsequent solid-state polymerization in the crystals, for instance, lozenge-shape crystals of poly(p-phenylene pyromelliteimide) (PPPI) and lath-like crystal of Kaptoa On the other hand, when they are precipitated via liquid-liquid phase separation, the microspheres of PPPI and other polyimides are obtained. The miscibility between oligomers and solvents is an important parameter to control the morphology.

Original languageEnglish
Title of host publicationPolymer Preprints, Japan
Pages76-78
Number of pages3
Volume55
Edition1
Publication statusPublished - 2006
Event55th SPSJ Annual Meeting - Nagoya, Japan
Duration: May 24 2006May 26 2006

Other

Other55th SPSJ Annual Meeting
CountryJapan
CityNagoya
Period5/24/065/26/06

Fingerprint

Oligomers
Polyimides
Phase separation
Polymerization
Crystals
Molecular weight
Molecular orientation
Liquids
Microspheres
Solubility
Crystallization
Plastics

Keywords

  • Morphology
  • Oligomer
  • Phase separation
  • Polyimide

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Kimura, K. (2006). Morphology control of polyimides by using phase separation during polymerization. In Polymer Preprints, Japan (1 ed., Vol. 55, pp. 76-78)

Morphology control of polyimides by using phase separation during polymerization. / Kimura, Kunio.

Polymer Preprints, Japan. Vol. 55 1. ed. 2006. p. 76-78.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Kimura, K 2006, Morphology control of polyimides by using phase separation during polymerization. in Polymer Preprints, Japan. 1 edn, vol. 55, pp. 76-78, 55th SPSJ Annual Meeting, Nagoya, Japan, 5/24/06.
Kimura K. Morphology control of polyimides by using phase separation during polymerization. In Polymer Preprints, Japan. 1 ed. Vol. 55. 2006. p. 76-78
Kimura, Kunio. / Morphology control of polyimides by using phase separation during polymerization. Polymer Preprints, Japan. Vol. 55 1. ed. 2006. pp. 76-78
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