The ζ-Potential of Silicone Oil Droplets Dispersed in Aqueous Solutions

Gu, Yongan; Li, Dongqing

doi:10.1006/jcis.1998.5612

Cited by 40 publications

(49 citation statements)

References 12 publications

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“…At a pH lower than 3.7, the keratin fiber surface possesses a cationic character, while at a pH higher than 3.7 the keratin surface assumes a negative potential. In addition, the pzz is found to be at pH ≈5.0 for the silicone oil-water interfaces (15), which is very close to the published pzz of mineral oil-in-water (O/W) emulsion droplets (10). However, it is noted that the ζ -potential of the keratin fibers measured by Jachowicz and Berthiaume using the streaming potential technique (7) is only ζ ≈ −13 mV at pH ≈5.5-9.0.…”

Section: Ph Effectmentioning

confidence: 94%

“…These liquids are the same as those used for measuring the ζ -potential of small silicone oil droplets (15)(16)(17). They are the pure DIUF water (Fisher Scientific, Canada), the aqueous phases with varying pH values, the electrolyte solutions containing either NaCl or AlCl 3 , and the ionic surfactant solutions containing either CTAB or SDS.…”

Section: Streaming Potential Measurementsmentioning

confidence: 99%

“…They are the pure DIUF water (Fisher Scientific, Canada), the aqueous phases with varying pH values, the electrolyte solutions containing either NaCl or AlCl 3 , and the ionic surfactant solutions containing either CTAB or SDS. The last three aqueous solutions are prepared from the pure DIUF water and the procedure for their preparations was described previously (15)(16)(17). In the streaming potential measurements, the viscosity µ, the relative dielectric constant ε r , and the bulk electrical conductivity λ b are the important liquid properties required in Eq.…”

Section: Streaming Potential Measurementsmentioning

confidence: 99%

See 2 more Smart Citations

The ζ-Potential of Glass Surface in Contact with Aqueous Solutions

2000

Journal of Colloid and Interface Science

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172

116

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Section: Ph Effectmentioning

confidence: 94%

Section: Streaming Potential Measurementsmentioning

confidence: 99%

Section: Streaming Potential Measurementsmentioning

confidence: 99%

See 1 more Smart Citation

The ζ-Potential of Glass Surface in Contact with Aqueous Solutions

2000

Journal of Colloid and Interface Science

Self Cite

172

116

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“…Yang et al [8] measured the zeta potential of microbubbles in aqueous solutions by developing an approach in which the bubbles' mobility is determined by microelectrophoresis measurement on the stationary levels in a closed cell. Gu and Li [9] proposed an experimental method to measure the zeta potential of small liquid droplets dispersed in another immiscible liquid. They determined the zeta potential from the force balance among the electrical force, the gravitational force, and the buoyancy force being exerted on a stationary droplet.…”

Section: General Aspectsmentioning

confidence: 99%

A method for simultaneously determining the zeta potentials of the channel surface and the tracer particles using microparticle image velocimetry technique

et al. 2006

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The zeta potentials of channel surfaces and tracer particles are of importance to the design of electrokinetic microfluidic devices, the characterization of channel materials, and the quantification of the microparticle image velocimetry (microPIV) measurement of EOFs. A method is proposed to simultaneously measure the zeta potentials of the channel surface and the tracer particles in aqueous solutions using the microPIV technique. Through the measurement of the steady velocity distributions of the tracer particles in both open- and closed-end rectangular microchannels under the same water chemistry condition, the electrophoretic velocity of the tracer particles and the EOF field of the microchannel are determined using the expressions derived in this study for the velocity distributions of charged tracer particles in the open- and closed-end rectangular microchannels. Thus, the zeta potentials of the tracer particles and the channel surfaces are simultaneously obtained using the least-square method to fit the microPIV measured velocity distribution of the tracer particles. Measurements were carried out with a microPIV system to determine the zeta potentials of the channel wall and the fluorescent tracer particles in deionized water and sodium chloride and boric acid solutions of various concentrations.

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“…7). This behavior of the oil droplets in SDS concentrations below the CMC were similar to that of the general colloidal particles (15,23).…”

Section: Effect Of Lower Salt Concentration On Oil Droplet Stabilitymentioning

confidence: 54%

Stability Characteristics of Dispersed Oil Droplets Prepared by the Microchannel Emulsification Method

Liu

Nakajima

Nabetani

et al. 2001

Journal of Colloid and Interface Science

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The ζ-Potential of Silicone Oil Droplets Dispersed in Aqueous Solutions

Cited by 40 publications

References 12 publications

The ζ-Potential of Glass Surface in Contact with Aqueous Solutions

The ζ-Potential of Glass Surface in Contact with Aqueous Solutions

A method for simultaneously determining the zeta potentials of the channel surface and the tracer particles using microparticle image velocimetry technique

Stability Characteristics of Dispersed Oil Droplets Prepared by the Microchannel Emulsification Method

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