A Novel Approach for Preparation of Micrometer-sized, Monodisperse Dimple and Hemispherical Polystyrene Particles † Part CCCXXX of the series “Studies on Suspension and Emulsion”

A Novel Approach for Preparation of Micrometer-sized, Monodisperse Dimple and Hemispherical Polystyrene Particles † Part CCCXXX of the series “Studies on Suspension and Emulsion”

Micrometer-sized, monodisperse dimple and hemispherical polystyrene (PS) particles were successfully prepared by heating (55−70 °C) of spherical PS particles dispersed in methanol/water media (40/60 to 80/20, w/w) in the presence of decane droplets, and subsequent cooling down to room temperature. D...

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Veröffentlicht in:Langmuir 2010-03, Vol.26 (6), p.3848-3853
Hauptverfasser: Tanaka, Takuya, Komatsu, Yoshifumi, Fujibayashi, Teruhisa, Minami, Hideto, Okubo, Masayoshi
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Colloids: Surfactants and Self-Assembly, Dispersions, Emulsions, Foams
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container_end_page 3853
container_issue 6
container_start_page 3848
container_title Langmuir
container_volume 26
creator Tanaka, Takuya
Komatsu, Yoshifumi
Fujibayashi, Teruhisa
Minami, Hideto
Okubo, Masayoshi
description Micrometer-sized, monodisperse dimple and hemispherical polystyrene (PS) particles were successfully prepared by heating (55−70 °C) of spherical PS particles dispersed in methanol/water media (40/60 to 80/20, w/w) in the presence of decane droplets, and subsequent cooling down to room temperature. Decane was absorbed by the PS particles during the heating process. Decane-absorbed PS particles phase-separated into PS and decane phases in the inside during the cooling process, and eventually dimple and/or hemispherical particles were formed by removal of the decane phase from phase-separated PS/decane particles by evaporation. The size of the dimple, which is determined by the volume of decane phase-separated from decane-absorbed PS particles during the cooling process, increased with increases in the heating temperature and the methanol content.
doi_str_mv 10.1021/la903309t
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subjects Colloids: Surfactants and Self-Assembly, Dispersions, Emulsions, Foams
title A Novel Approach for Preparation of Micrometer-sized, Monodisperse Dimple and Hemispherical Polystyrene Particles † Part CCCXXX of the series “Studies on Suspension and Emulsion”
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