Effective Modification of Particle Surface Properties Using Ultrasonic Water Mist

Measurements of the zeta potential in sandpacks saturated with monovalent electrolytes at six different electrolyte concentrations have been reported. The values we record are classified into two groups based on the magnitude of the zeta potential: group 1 (samples S1 and S2) and group 2 (samples S3 and S4). The measured zeta potential in magnitude in group 1 is much smaller than that in group 2 and in literature at the same electrolyte concentration. The reason for a big variation of the zeta potential between group 1 and group 2 may be due to the difference in technique of making sand particles of different size leading to change of particle surface properties. Consequently, the zeta potential that depends on the surface properties would vary. The results show that there is a gradual decrease in the zeta potential with increase in monovalent electrolyte concentration (from 10−4 M to 10−2 M). Additionally, the empirical expressions between the zeta potential and electrolyte concentration are obtained in this work for both group 1 and group 2. The obtained expression for group 2 is in good agreement with those available in literature. From the experimental data in combination with a theoretical model, the binding constants for Na+ and K+ cations are obtained for the samples of group 2 and they are in the same range reported in literature for silica-based samples.

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Particle surface properties of stainless steel-coated tungsten carbide powders

Powder Technology ◽

10.1016/j.powtec.2006.03.005 ◽

2006 ◽

Vol 164 (3) ◽

pp. 124-129 ◽

Cited By ~ 15

Author(s):

C.M. Fernandes ◽

A.M.R. Senos ◽

M.T. Vieira

Keyword(s):

Stainless Steel ◽

Tungsten Carbide ◽

Surface Properties ◽

Particle Surface

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Influence of particle surface properties on the dielectric behavior of silica/epoxy nanocomposites

Physica B Condensed Matter ◽

10.1016/j.physb.2008.01.021 ◽

2008 ◽

Vol 403 (17) ◽

pp. 2584-2589 ◽

Cited By ~ 36

Author(s):

Lihong Cheng ◽

Liaoying Zheng ◽

Guorong Li ◽

Jiangtao Zeng ◽

Qingrui Yin

Keyword(s):

Surface Properties ◽

Particle Surface ◽

Dielectric Behavior ◽

Epoxy Nanocomposites

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Second Harmonic Generation Spectroscopy as a Method for In Situ and Online Characterization of Particle Surface Properties

Particle & Particle Systems Characterization ◽

10.1002/ppsc.200601084 ◽

2006 ◽

Vol 23 (5) ◽

pp. 351-359 ◽

Cited By ~ 23

Author(s):

Lars Schneider ◽

Wolfgang Peukert

Keyword(s):

Second Harmonic Generation ◽

Surface Properties ◽

Harmonic Generation ◽

Second Harmonic ◽

Particle Surface ◽

Second Harmonic Generation Spectroscopy

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Liquid-particle surface properties on spouted bed coating and drying performance

The Canadian Journal of Chemical Engineering ◽

10.1002/cjce.20208 ◽

2009 ◽

Vol 87 (5) ◽

pp. 695-703 ◽

Cited By ~ 15

Author(s):

S. C. S. Rocha ◽

M. W. Donida ◽

A. M. M. Marques

Keyword(s):

Surface Properties ◽

Particle Surface ◽

Liquid Particle ◽

Spouted Bed

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Bentonite from Porto Santo Island, Madeira archipelago: surface properties studied by inverse gas chromatography

Clay Minerals ◽

10.1180/claymin.2010.045.1.77 ◽

2010 ◽

Vol 45 (1) ◽

pp. 77-86 ◽

Cited By ~ 12

Author(s):

N. Cordeiro ◽

J. Silva ◽

C. Gomes ◽

F. Rocha

Keyword(s):

Gas Chromatography ◽

Surface Properties ◽

Inverse Gas Chromatography ◽

Particle Surface ◽

Sorption Isotherms ◽

Surface Heterogeneity ◽

Surface Areas ◽

Dispersive Surface Energy ◽

Madeira Archipelago

AbstractThe present paper shows the importance of Inverse Gas Chromatography (IGC) for the determination of the surface properties of bentonites. These properties are dispersive surface energy, acid-base properties, surface heterogeneity, sorption isotherms, BET surface areas and heat of sorption, using different probe molecules. IGC can contribute to the interpretation, prediction and optimization of the studied materials' properties. The paper focuses on two distinctive bentonite samples from Porto Santo Island, Madeira archipelago. In view of their potential value, achieved through their incorporation in products for dermopharmacy and dermocosmetics, particle size and particle surface properties are of fundamental importance.

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