|
Sedimentation Potential occurs when dispersed particles move under the influence of either gravity or centrifugation in a medium. This motion disrupts the equilibrium symmetry of the particle's double layer. While the particle moves, the ions in the electric double layer lag behind due to the liquid flow. This causes a slight displacement between the surface charge and the electric charge of the diffuse layer. As a result, the moving particle creates a dipole moment. The sum of all of the dipoles generates an electric field which is called ''sedimentation potential''. It can be measured with an open electrical circuit, which is also called sedimentation current. There is detailed descriptions of this effect in many books on Colloid and Interface Science ,〔Lyklema, J. “Fundamentals of Interface and Colloid Science”, vol.2, page.3.208, 1995〕 ,〔Hunter, R.J. "Foundations of Colloid Science", Oxford University Press, 1989〕 ,〔Dukhin, S.S. & Derjaguin, B.V. "Electrokinetic Phenomena", J.Willey and Sons, 1974〕 ,〔Russel, W.B., Saville, D.A. and Schowalter, W.R. “Colloidal Dispersions”, Cambridge University Press,1989〕 ,〔Kruyt, H.R. “Colloid Science”, Elsevier: Volume 1, Irreversible systems, (1952)〕 ,〔Dukhin, A.S. and Goetz, P.J. (2002) ''Ultrasound for characterizing colloids''. Elsevier.〕 ==Surface Energy== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Sedimentation potential」の詳細全文を読む スポンサード リンク
|