Morphology of poly(p-oxybenzoyl) prepared in perfluoropolyether

Kunio Kimura; Hideki Ohmori; Tetsuya Uchida; Yuhiko Yamashita

doi:10.1002/pat.540

Morphology of poly(p-oxybenzoyl) prepared in perfluoropolyether

Kunio Kimura, Hideki Ohmori, Tetsuya Uchida, Yuhiko Yamashita

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

Solvent effect on the morphology of poly(p-oxybenzoyl) (POB) prepared by the reaction-induced phase separation of oligomers was examined by the polymerization of p-acetoxybenzoic acid in perfluoropolyether Aflunox™ (AFL2507 and AFL606). Polymerization was carried out at 320°C for 6 hr. POB microspheres were formed in AFL2507 by the liquid-liquid phase separation of oligomers due to the low miscibility of oligomers in AFL2507. The molecular weight of the solvent influenced the morphology, and the polymerization in AFL606 of which the molecular weight was lower than AFL2507 yielded whiskers formed by crystallization of oligomers induced by the increase in miscibility compared with that in AFL2507. The solvent structure and its molecular weight influenced the miscibility of oligomers and ultimately controlled the morphology from whisker to microsphere.

Original language	English
Pages (from-to)	6-10
Number of pages	5
Journal	Polymers for Advanced Technologies
Volume	16
Issue number	1
DOIs	https://doi.org/10.1002/pat.540
Publication status	Published - Jan 1 2005

Keywords

Microsphere
Morphology
Oligomers
Phase separation
Poly(p-oxybenzoyl)

ASJC Scopus subject areas

Polymers and Plastics

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10.1002/pat.540

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abstract = "Solvent effect on the morphology of poly(p-oxybenzoyl) (POB) prepared by the reaction-induced phase separation of oligomers was examined by the polymerization of p-acetoxybenzoic acid in perfluoropolyether Aflunox{\texttrademark} (AFL2507 and AFL606). Polymerization was carried out at 320°C for 6 hr. POB microspheres were formed in AFL2507 by the liquid-liquid phase separation of oligomers due to the low miscibility of oligomers in AFL2507. The molecular weight of the solvent influenced the morphology, and the polymerization in AFL606 of which the molecular weight was lower than AFL2507 yielded whiskers formed by crystallization of oligomers induced by the increase in miscibility compared with that in AFL2507. The solvent structure and its molecular weight influenced the miscibility of oligomers and ultimately controlled the morphology from whisker to microsphere.",

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AU - Kimura, Kunio

AU - Ohmori, Hideki

AU - Uchida, Tetsuya

AU - Yamashita, Yuhiko

PY - 2005/1/1

Y1 - 2005/1/1

N2 - Solvent effect on the morphology of poly(p-oxybenzoyl) (POB) prepared by the reaction-induced phase separation of oligomers was examined by the polymerization of p-acetoxybenzoic acid in perfluoropolyether Aflunox™ (AFL2507 and AFL606). Polymerization was carried out at 320°C for 6 hr. POB microspheres were formed in AFL2507 by the liquid-liquid phase separation of oligomers due to the low miscibility of oligomers in AFL2507. The molecular weight of the solvent influenced the morphology, and the polymerization in AFL606 of which the molecular weight was lower than AFL2507 yielded whiskers formed by crystallization of oligomers induced by the increase in miscibility compared with that in AFL2507. The solvent structure and its molecular weight influenced the miscibility of oligomers and ultimately controlled the morphology from whisker to microsphere.

AB - Solvent effect on the morphology of poly(p-oxybenzoyl) (POB) prepared by the reaction-induced phase separation of oligomers was examined by the polymerization of p-acetoxybenzoic acid in perfluoropolyether Aflunox™ (AFL2507 and AFL606). Polymerization was carried out at 320°C for 6 hr. POB microspheres were formed in AFL2507 by the liquid-liquid phase separation of oligomers due to the low miscibility of oligomers in AFL2507. The molecular weight of the solvent influenced the morphology, and the polymerization in AFL606 of which the molecular weight was lower than AFL2507 yielded whiskers formed by crystallization of oligomers induced by the increase in miscibility compared with that in AFL2507. The solvent structure and its molecular weight influenced the miscibility of oligomers and ultimately controlled the morphology from whisker to microsphere.

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KW - Morphology

KW - Oligomers

KW - Phase separation

KW - Poly(p-oxybenzoyl)

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Morphology of poly(p-oxybenzoyl) prepared in perfluoropolyether

Abstract

Keywords

ASJC Scopus subject areas

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