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Fabrication of Polymeric Capsules Enclosing Eletrophoretic Particle Dispersion

Published online by Cambridge University Press:  01 February 2011

Ru Qiao ,
Xiao Li Zhang ,
Ri Qiu ,
Yan Li  and
Young Soo Kang
Ru Qiao
Affiliation:
Pukyong National University, Department of Chemistry, 599-1, Daeyeon 3-dong, Namgu, Busan, 608-737, Republic of Korea
Xiao Li Zhang
Affiliation:
Pukyong National University, Department of Chemistry, 599-1 Daeyeon-3-dong, Namgu, Pusan, 608-737, Republic of Korea
Ri Qiu
Affiliation:
Pukyong National University, Department of Chemistry, 599-1 Daeyeon-3-dong, Namgu, Pusan, 608-737, Republic of Korea
Yan Li
Affiliation:
Pukyong National University, Department of Chemistry, 599-1 Daeyeon-3-dong, Namgu, Pusan, 608-737, Republic of Korea
Young Soo Kang
Affiliation:
yskang@pknu.ac.kr, Pukyong National University, Department of Chemistry, 599-1 Daeyeon-3-dong, Namgu, Pusan, 608-737, Republic of Korea
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Abstract

Poly(urea-formaldehyde) capsules enclosing electrophoretic particle dispersion were formed by carrying out an in-situ polymerization reaction in an oil-in-water emulsion. The internal dispersion was composed of pigment particles Yellow-14 modified by charge control agent to have superior electrophoresis velocity and the mixture of tetrachloroethylene and sec-butylbenzene, using Span 80 as the stabilizer and emulsifier. FE-SEM, TEM, and optical microscope (OM) were performed to investigate on the capsule size and surface morphology. Contact angle measurements showed that UF prepolymer deposited at the o/w interface to form hollow capsules only when the interfacial tension is large enough.

Keywords

core/shellmorphologypolymerization
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 949: Symposium C – Smart Dielectric Polymer Properties, Characterization and Their Devices , 2006 , 0949-C02-03
Copyright
Copyright © Materials Research Society 2007

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References

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