Electrostatic interactions of colloidal particles in nonpolar solvents : role of surface chemistry and charge control agents

We study the electrostatic and hydrodynamic interactions of colloidal particles in nonpolar solvents. Using blinking optical tweezers, we can extract the screening length, kappa-1, the effective surface potential, |ezeta*|, and the hydrodynamic radius, ah, in a single measurement. We apply this tech...

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Veröffentlicht in:Langmuir : the ACS journal of surfaces and colloids. - 1985. - 24(2008), 4 vom: 19. Feb., Seite 1160-4
1. Verfasser: Sainis, Sunil K (VerfasserIn)
Weitere Verfasser: Germain, Vincent, Mejean, Cecile O, Dufresne, Eric R
Format: Aufsatz
Sprache:English
Veröffentlicht: 2008
Zugriff auf das übergeordnete Werk:Langmuir : the ACS journal of surfaces and colloids
Schlagworte:Journal Article Research Support, N.I.H., Extramural Research Support, Non-U.S. Gov't 1,4-bis(2-ethylhexyl) sodium sulfosuccinate Aerosols Alkanes Colloids Polymers Polystyrenes Solvents mehr... Succinates Succinimides polyisobutylene succinimide Polymethyl Methacrylate 9011-14-7 n-hexadecane F8Z00SHP6Q
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245 1 0 |a Electrostatic interactions of colloidal particles in nonpolar solvents  |b role of surface chemistry and charge control agents 
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520 |a We study the electrostatic and hydrodynamic interactions of colloidal particles in nonpolar solvents. Using blinking optical tweezers, we can extract the screening length, kappa-1, the effective surface potential, |ezeta*|, and the hydrodynamic radius, ah, in a single measurement. We apply this technique to suspensions of polystyrene and poly(methyl methacrylate) particles in hexadecane with soluble charge control agents, aerosol sodium di-2-ethylhexylsulfosuccinate (AOT) and polyisobutylene succinimide (OLOA-1200). We find that the electrostatic interactions of these particles depend sensitively on surface composition as well as on the concentration and chemistry of the charge control agent 
650 4 |a Journal Article 
650 4 |a Research Support, N.I.H., Extramural 
650 4 |a Research Support, Non-U.S. Gov't 
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650 7 |a n-hexadecane  |2 NLM 
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700 1 |a Germain, Vincent  |e verfasserin  |4 aut 
700 1 |a Mejean, Cecile O  |e verfasserin  |4 aut 
700 1 |a Dufresne, Eric R  |e verfasserin  |4 aut 
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