Towards local deposition of particles by electrophoresis in dc electric fields in polar and nonpolar media and mixtures thereof
Towards local deposition of particles by electrophoresis in dc electric fields in polar and nonpolar media and mixtures thereof
复制标题
通过在极性和非极性介质及其混合物中的直流电场中的电泳实现粒子的局部沉积
DOI:
10.1016/j.ceramint.2020.04.092
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发表时间:
2020
影响因子:
5.2
通讯作者:
Raether
中科院分区:
文献类型:
--
作者:
Schäfer;Raether
As a step towards the understanding of local electrophoretic deposition, particle trajectories are investigated in nonuniform electric field. Our hypothesis is that particles can be locally deposited in nonuniform fields. As an important process parameter, we also study the effect of solvent polarity.For the experiments, the particles are coated with suitable dispersants. The movement and deposition in polar as well as in nonpolar media and mixtures thereof in nonuniform dc electric fields are monitored by optical microscopy.We find that the average velocity of particles in pure cyclohexane increases linear with electric field strength in agreement with standard theory. Electrophoretic mobility and Zeta potential of the particles are calculated from this data. The particles deposit in a homogeneous layer on the electrode surface. The same findings are true for mixtures of 7.5 vol% to 30 vol% ethanol in cyclohexane as suspension media. In water, the particles move against the apparent electrostatic force at voltages below 3 V and do not deposit on either electrode. At voltages above 3 V dendritic structures are formed by cathodic electrophoretic deposition. We conclude that under suitable conditions, local deposition of particles is possible.
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影响因子:
9.9
作者:
Amitesh S. Jayaraman;E. Klaseboer;D. Chan
通讯作者:
D. Chan
影响因子:
5.2
作者:
L. Vogt;M. Schäfer;D. Kurth;F. Raether
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F. Raether
影响因子:
2.9
作者:
A. Dukhin;S. Dukhin
通讯作者:
S. Dukhin
DOI:
--
发表时间:
1991
期刊:
影响因子:
--
作者:
G. Papanastasiou;I. Ziogas
通讯作者:
I. Ziogas
影响因子:
3.5
作者:
S. Mahajan;J. Dickerson
通讯作者:
J. Dickerson