1. Tridodecylamine, an efficient charge control agent in non-polar media for electrophoretic inks application.
- Author
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Noel, Amélie, Mirbel, Déborah, Cloutet, Eric, Fleury, Guillaume, Schatz, Christophe, Navarro, Christophe, Hadziioannou, Georges, and Cyrilbrochon, Null
- Subjects
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ISOELECTRIC point , *SILANE compounds , *TITANIUM dioxide , *HYDROPHOBIC compounds , *ENERGY consumption - Abstract
In order to obtain efficient electrophoretic inks, Tridodecylamine (Dod 3 N), has been studied as charge control agent (CCA) in a non-polar paraffin solvent (Isopar G) for various inorganic pigments (TiO 2 and Fe 2 O 3 ). All hydrophobic mineral oxides, i.e. treated with octyltrimethoxysilane (C8) or dodecyltrimethoxysilane (C12), were found to be negatively charged in presence of Dod 3 N. The electrophoretic mobilities of inorganic pigments seemed to be strongly dependent of their isoelectric point (IEP) and also of the concentration of dod 3 N with an optimum range between 10 and 20 mM depending on the pigments. Finally, an electrophoretic ink constituted of hydrophobic mineral oxides in presence of Dod 3 N was tested in a device. Its efficiency as charge control agent to negatively charge hydrophobic particles was confirmed through good optical properties and fast response time (220 ms at 200 kV m −1 ). [ABSTRACT FROM AUTHOR]
- Published
- 2018
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