Morphology control of poly(p-oxycinnamoyl) by direct polycondensation with aromatic anhydride

Toshimitsu Nakanishi, Shin Ichiro Kohama, Shinichi Yamazaki, Kunio Kimura

Research output: Contribution to conferencePaper

Abstract

Direct polycondensation of p-hydroxycinnamic acid was carried out in the presence of an aromatic anhydride such as benzoic anhydride and p-ethoxybenzoic anhydride by means of reaction-induced phase separation of oligomers. Poly(p-oxycinnamoyl) (POC) spheres were prepared in liquid paraffin in the presence of both aromatic anhydrides at 280 - 320°C. On the other hand, POC crystals having clear habits were prepared in hydrogenated terphenyl mixture in the presence of p-ethoxybenzoic anhydride at 260°C. Especially, POC needle-like crystals were prepared in good yield at 260°C at a concentration of 10.0 %. WAXS patterns of POC plate-like and needle-like crystals showed that these crystals possessed quite high crystallinity compared with POC spheres. It was concluded that the morphology of POC was tunable by not only the solvent but also the aromatic anhydride as condensation reagent.

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

Other

Other54th SPSJ Annual Meeting 2005
CountryJapan
CityYokohama
Period5/25/055/27/05

Keywords

  • Aromatic Anhydride
  • Direct Polycondensation
  • Morphology
  • Poly (p-oxycinnamoyl)

ASJC Scopus subject areas

  • Engineering(all)

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    Nakanishi, T., Kohama, S. I., Yamazaki, S., & Kimura, K. (2005). Morphology control of poly(p-oxycinnamoyl) by direct polycondensation with aromatic anhydride. Paper presented at 54th SPSJ Annual Meeting 2005, Yokohama, Japan.