Core-shell-structured monodisperse copolymer/silica particle suspension and its electrorheological response

Monodisperse core-shell-structured poly(styrene-co-butyl acrylate-co-[2-(methacryloxy)ethyl] trimethylammonium chloride)/silica (PSBM/SiO2) nanoparticles were applied as new electrorheological (ER) materials in which the particles were dispersed in an insulating oil. These nanoparticles were prepare...

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Veröffentlicht in:Langmuir : the ACS journal of surfaces and colloids. - 1992. - 30(2014), 7 vom: 25. Feb., Seite 1729-34
1. Verfasser: Liu, Ying Dan (VerfasserIn)
Weitere Verfasser: Quan, Xuemei, Hwang, Bora, Kwon, Yong Ku, Choi, Hyoung Jin
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2014
Zugriff auf das übergeordnete Werk:Langmuir : the ACS journal of surfaces and colloids
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Acrylic Resins Polystyrenes Suspensions Silicon Dioxide 7631-86-9
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520 |a Monodisperse core-shell-structured poly(styrene-co-butyl acrylate-co-[2-(methacryloxy)ethyl] trimethylammonium chloride)/silica (PSBM/SiO2) nanoparticles were applied as new electrorheological (ER) materials in which the particles were dispersed in an insulating oil. These nanoparticles were prepared by the consecutive precipitation of cetyltrimethylammonium bromide and negatively charged tetraethylorthosilicate onto the cationic surfaces of PSBM colloidal particles. The successful deposition of the shell phase of the particles and their morphology was examined by transmission and scanning electron microscopy. Their ER properties were studied with a rotational rheometer under different shear modes: controlled shear rate, steady shear under constant shear rate, and creep test. The silica shell allowed the PSBM/SiO2 particles to exhibit typical ER performance under an applied electric field. The dielectric spectra of the PSBM/SiO2-based ER fluid were also recorded using an LCR meter, which was correlated to the ER performance of the ER fluid 
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650 4 |a Research Support, Non-U.S. Gov't 
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700 1 |a Quan, Xuemei  |e verfasserin  |4 aut 
700 1 |a Hwang, Bora  |e verfasserin  |4 aut 
700 1 |a Kwon, Yong Ku  |e verfasserin  |4 aut 
700 1 |a Choi, Hyoung Jin  |e verfasserin  |4 aut 
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