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Please use this identifier to cite or link to this item: http://hdl.handle.net/10098/1153

タイトル: Adsorption Force of Polyaniline-Coated Polystyrene Latex Particles
著者: Qiang, Ke
AOKI, Koichi
キーワード: polyaniline
latex particles
poly(N-vinylpyrrolidone)
adsorption force
suspensions
Issue Date: Jan-2007
出版者: Elsevier Ltd
引用: Journal of Colloid and Interface Science, 305(1), 2007, p.40-45
抄録: Visible polyaniline-latex particles 13 μm in diameter were used for obtaining quantitatively a relationship between the adsorption force and the electroactivity at a platinum electrode. The suspension in hydrochloride acid was filled in an optical cell equipped with wire electrodes. When electrode potential was switched between the oxidized and the reduced domains alternatively, some adsorbed particles showed color change owing to the electroactivity. The numbers of the electroactive and the inactive particles were counted in the suspension including poly(N-vinylpyrrolidone) (PVP). The ratio of the numbers was proportional to the concentration of PVP, as was in equilibrium. The adsorbed particles were desorbed mechanically by forced flow. The numbers of the desorbed particles did not decrease with an increase in the flow velocity until threshold values. The threshold value for the electroactive particle was 10 times larger than that for the inactive ones, corresponding to 10 times larger adsorption energy of the electroactive particles than the inactive ones. The adsorption stress was evaluated from the removal of the electropolymerized polyaniline film from the electrode. Then the adsorption area of the particle was estimated.
URI: http://hdl.handle.net/10098/1153
http://dx.doi.org/10.1016/j.jcis.2006.09.045
ISSN: 00219797
Appears in Collections:01 雑誌等掲載論文
03 大学院工学研究科・工学部

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