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 language | English |
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| Number of pages | 1 |
| Publication status | Published - Dec 1 2005 |
| Event | 54th SPSJ Annual Meeting 2005 - Yokohama, Japan Duration: May 25 2005 → May 27 2005 |
Other
| Other | 54th SPSJ Annual Meeting 2005 |
|---|---|
| Country/Territory | Japan |
| City | Yokohama |
| Period | 5/25/05 → 5/27/05 |
Keywords
- Aromatic Anhydride
- Direct Polycondensation
- Morphology
- Poly (p-oxycinnamoyl)
ASJC Scopus subject areas
- Engineering(all)