Novel approach to enhance the dispersion stability of ER fluids based on hollow polyaniline sphere particle

Bo Hyun Sung; Ung Su Choi; Ho Gyeom Jang; Yong Sung Park

doi:10.1016/j.colsurfa.2005.08.030

Novel approach to enhance the dispersion stability of ER fluids based on hollow polyaniline sphere particle

Bo Hyun Sung, Ung Su Choi, Ho Gyeom Jang, Yong Sung Park

College of Science

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

45 Citations (Scopus)

Abstract

By this time, when electrorheological (ER) fluids were applied long term, these have been limited because of problems with particle sedimentation. To solve the sedimentation problem, we report on the preparation of hollow polyaniline (PANI) sphere with nano-scale as the disperse phase for estimating electrical and ER properties. A procedure has been developed to coat colloidal polystyrene (PS) core within a PANI shell by chemical oxidation polymerization. The core-shell particles can be turned into spherical hollow PANI shells by dissolution of the PS cores by using organic solvent. The sedimentation of prepared hollow PANI spheres with nano-sized particle in the silicone oil (50 cS) was observed using UV spectrum with time. Also, the suspension showed ER response and good dispersion stability in the silicone oil.

Original language	English
Pages (from-to)	37-42
Number of pages	6
Journal	Colloids and Surfaces A: Physicochemical and Engineering Aspects
Volume	274
Issue number	1-3
DOIs	https://doi.org/10.1016/j.colsurfa.2005.08.030
Publication status	Published - 2006 Feb 15

Keywords

Dispersion stability
ER fluids
Hollow sphere
Polyaniline
Sedimentation test

ASJC Scopus subject areas

Surfaces and Interfaces
Physical and Theoretical Chemistry
Colloid and Surface Chemistry

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10.1016/j.colsurfa.2005.08.030

Cite this

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abstract = "By this time, when electrorheological (ER) fluids were applied long term, these have been limited because of problems with particle sedimentation. To solve the sedimentation problem, we report on the preparation of hollow polyaniline (PANI) sphere with nano-scale as the disperse phase for estimating electrical and ER properties. A procedure has been developed to coat colloidal polystyrene (PS) core within a PANI shell by chemical oxidation polymerization. The core-shell particles can be turned into spherical hollow PANI shells by dissolution of the PS cores by using organic solvent. The sedimentation of prepared hollow PANI spheres with nano-sized particle in the silicone oil (50 cS) was observed using UV spectrum with time. Also, the suspension showed ER response and good dispersion stability in the silicone oil.",

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AU - Choi, Ung Su

AU - Jang, Ho Gyeom

AU - Park, Yong Sung

PY - 2006/2/15

Y1 - 2006/2/15

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AB - By this time, when electrorheological (ER) fluids were applied long term, these have been limited because of problems with particle sedimentation. To solve the sedimentation problem, we report on the preparation of hollow polyaniline (PANI) sphere with nano-scale as the disperse phase for estimating electrical and ER properties. A procedure has been developed to coat colloidal polystyrene (PS) core within a PANI shell by chemical oxidation polymerization. The core-shell particles can be turned into spherical hollow PANI shells by dissolution of the PS cores by using organic solvent. The sedimentation of prepared hollow PANI spheres with nano-sized particle in the silicone oil (50 cS) was observed using UV spectrum with time. Also, the suspension showed ER response and good dispersion stability in the silicone oil.

KW - Dispersion stability

KW - ER fluids

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KW - Polyaniline

KW - Sedimentation test

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Novel approach to enhance the dispersion stability of ER fluids based on hollow polyaniline sphere particle

Abstract

Keywords

ASJC Scopus subject areas

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