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Effect of hydrophilicity of polyaniline particles on their electrorheology: Steady flow and dynamic behaviour
- 1.0342648 - ÚMCH 2011 RIV US eng J - Journal Article
Stěnička, M. - Pavlínek, V. - Sáha, P. - Blinova, Natalia V. - Stejskal, Jaroslav - Quadrat, Otakar
Effect of hydrophilicity of polyaniline particles on their electrorheology: Steady flow and dynamic behaviour.
Journal of Colloid and Interface Science. Roč. 346, č. 1 (2010), s. 236-240. ISSN 0021-9797. E-ISSN 1095-7103
R&D Projects: GA ČR GA202/09/1626; GA AV ČR IAA400500905
Institutional research plan: CEZ:AV0Z40500505
Keywords : polyaniline * electrorheology * steady shear
Subject RIV: BK - Fluid Dynamics
Impact factor: 3.068, year: 2010
Electrorheological properties of suspensions are considerably affected by hydrophilicity of suspension particles. As a model material, polyaniline base powder protonated with sulfamic, tartaric, or perfluorooctanesulfonic acids provided particles of various hydrophilicity. The experiments revealed that, in the absence of electric field, due to a good compatibility of hydrophobic polyaniline particles with silicone-oil medium, their interactions were limited and the viscosity of suspension was low. When the electric field was applied, the rigidity of the polarized chain structure of the particles increased and, consequently, viscosity increased as well.
Permanent Link: http://hdl.handle.net/11104/0185328
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