Diameter control of poly(p-oxycinnamoyl) microspheres prepared by self-organizing polycondensation

Kunio Kimura; Shin Ichiro Kohama; Yuhiko Yamashita; Tetsuya Uchida; Yoshimitsu Sakaguchi

doi:10.1016/j.polymer.2003.08.042

Diameter control of poly(p-oxycinnamoyl) microspheres prepared by self-organizing polycondensation

Kunio Kimura, Shin Ichiro Kohama, Yuhiko Yamashita, Tetsuya Uchida, Yoshimitsu Sakaguchi

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

8 Citations (Scopus)

Abstract

The diameter control of poly(p-oxycinnamoyl) (POC) microspheres was examined. POC microspheres were prepared by the polycondensation of (E)-4-acetoxycinnamic acid in liquid paraffin at 320 °C. The microspheres were formed through the formation of microdroplets by the reaction-induced liquid-liquid phase separation and the subsequent polymerization of oligomers in the microdroplets leading to the solidification. The size of the microspheres was actually governed by the coalescence of the microdroplets in the growth process. In order to control the coalescence of the microdroplets, 4-octadecyloxybiphenyl (ODB) was added to the polymerization solution as a coalescence inhibitor, which exhibited amphiphilicity to liquid paraffin and POC. ODB inhibited the coalescence of the microdroplets. The average diameter decreased with the increase of the ODB concentration, and it was tunable from 0.97 to 4.61 μm.

Original language	English
Pages (from-to)	7383-7387
Number of pages	5
Journal	polymer
Volume	44
Issue number	24
DOIs	https://doi.org/10.1016/j.polymer.2003.08.042
Publication status	Published - Oct 31 2003

Keywords

Aromatic polyester
Microspheres
Phase separation

ASJC Scopus subject areas

Organic Chemistry
Polymers and Plastics
Materials Chemistry

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title = "Diameter control of poly(p-oxycinnamoyl) microspheres prepared by self-organizing polycondensation",

abstract = "The diameter control of poly(p-oxycinnamoyl) (POC) microspheres was examined. POC microspheres were prepared by the polycondensation of (E)-4-acetoxycinnamic acid in liquid paraffin at 320 °C. The microspheres were formed through the formation of microdroplets by the reaction-induced liquid-liquid phase separation and the subsequent polymerization of oligomers in the microdroplets leading to the solidification. The size of the microspheres was actually governed by the coalescence of the microdroplets in the growth process. In order to control the coalescence of the microdroplets, 4-octadecyloxybiphenyl (ODB) was added to the polymerization solution as a coalescence inhibitor, which exhibited amphiphilicity to liquid paraffin and POC. ODB inhibited the coalescence of the microdroplets. The average diameter decreased with the increase of the ODB concentration, and it was tunable from 0.97 to 4.61 μm.",

keywords = "Aromatic polyester, Microspheres, Phase separation",

author = "Kunio Kimura and Kohama, {Shin Ichiro} and Yuhiko Yamashita and Tetsuya Uchida and Yoshimitsu Sakaguchi",

year = "2003",

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doi = "10.1016/j.polymer.2003.08.042",

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T1 - Diameter control of poly(p-oxycinnamoyl) microspheres prepared by self-organizing polycondensation

AU - Kimura, Kunio

AU - Kohama, Shin Ichiro

AU - Yamashita, Yuhiko

AU - Uchida, Tetsuya

AU - Sakaguchi, Yoshimitsu

PY - 2003/10/31

Y1 - 2003/10/31

N2 - The diameter control of poly(p-oxycinnamoyl) (POC) microspheres was examined. POC microspheres were prepared by the polycondensation of (E)-4-acetoxycinnamic acid in liquid paraffin at 320 °C. The microspheres were formed through the formation of microdroplets by the reaction-induced liquid-liquid phase separation and the subsequent polymerization of oligomers in the microdroplets leading to the solidification. The size of the microspheres was actually governed by the coalescence of the microdroplets in the growth process. In order to control the coalescence of the microdroplets, 4-octadecyloxybiphenyl (ODB) was added to the polymerization solution as a coalescence inhibitor, which exhibited amphiphilicity to liquid paraffin and POC. ODB inhibited the coalescence of the microdroplets. The average diameter decreased with the increase of the ODB concentration, and it was tunable from 0.97 to 4.61 μm.

AB - The diameter control of poly(p-oxycinnamoyl) (POC) microspheres was examined. POC microspheres were prepared by the polycondensation of (E)-4-acetoxycinnamic acid in liquid paraffin at 320 °C. The microspheres were formed through the formation of microdroplets by the reaction-induced liquid-liquid phase separation and the subsequent polymerization of oligomers in the microdroplets leading to the solidification. The size of the microspheres was actually governed by the coalescence of the microdroplets in the growth process. In order to control the coalescence of the microdroplets, 4-octadecyloxybiphenyl (ODB) was added to the polymerization solution as a coalescence inhibitor, which exhibited amphiphilicity to liquid paraffin and POC. ODB inhibited the coalescence of the microdroplets. The average diameter decreased with the increase of the ODB concentration, and it was tunable from 0.97 to 4.61 μm.

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KW - Microspheres

KW - Phase separation

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