Electrokinetic potential of bentonite and kaolin particles in the presence of polymer mixtures

Bárány, Sándor; Kozakova, I.; Marcinova, L.; Škvarla, Juraj

doi:10.1134/s1061933x10050030

Cited by 10 publications

(10 citation statements)

References 16 publications

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“…Similar behaviour we observed for all investigated particles having adsorbed cationic polymers of different charge density [48][49][50][51][52][53]. Effect of pH on the electrokinetic potential of polyelectrolyte-covered particles is illustrated by Fig.…”

Section: Accepted Manuscriptsupporting

confidence: 79%

“…The ζ-potential of particles with adsorbed cationic and anionic polyelectrolytes added simultaneously also differs very little from that of particles bearing only anionic polyelectrolyte. Similar behavior has been observed for polystyrene, silica and kaolin [48][49][50][51][52][53] particles having adsorbed 1:1, 1:3 and 3:1 mixtures of cationic and anionic polyelectrolytes (example: Figs. 13 and 14).…”

Section: Effect Of Polyelectrolyte Mixturessupporting

confidence: 75%

“…We have performed a systematic study on the effect of anionic and cationic polyelectrolytes on the electrokinetic potential of negatively charged polystryrene, silica, bentonite and kaolin particles as a function of the polymer dose, pH, charge density (CD) of the polyelectrolyte, electrolyte concentration [48][49][50][51][52][53]. It should be stressed that our independent adsorption measurements testify that in the PE concentration range described in this section, the whole added polymer is adsorbed by particles, i.e.…”

Section: Effect Of Individual Polyelectrolytesmentioning

confidence: 94%

“…At the same time the amount of adsorbed cationic polyelectrolytes at which the iep of bentonite or kaolin particles is reached represents only a fraction of the surface charge density of these minerals [44,[48][49][50]53]. It means that the conventional approach, according to which the isoelectric point is reached at nearly the compensation of the surface charge by oppositely charged multivalent counter-ions or surfactant-ions, is not valid for adsorption of high molecular polyelectrolytes onto clay minerals surface.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

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Polymer adsorption and electrokinetic potential of dispersed particles in weak and strong electric fields

Bárány

2015

Advances in Colloid and Interface Science

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Section: Accepted Manuscriptsupporting

confidence: 79%

Section: Effect Of Polyelectrolyte Mixturessupporting

confidence: 75%

Section: Effect Of Individual Polyelectrolytesmentioning

confidence: 94%

Section: Accepted Manuscriptmentioning

confidence: 99%

See 2 more Smart Citations

Polymer adsorption and electrokinetic potential of dispersed particles in weak and strong electric fields

Bárány

2015

Advances in Colloid and Interface Science

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“…building of PE-surfactant multilayers which is a promising area for engineering new func tional materials and sensors. The main features of polyelectrolytes/ionic surfactants adsorption on solid surfaces can be summarized as follows [1][2][3][4][5][6][7][8][9][10]. Ad sorption of oppositely charged surfactants/PEs results 1 The article is published in the original.…”

Section: Introductionmentioning

confidence: 99%

Effect of polyelectrolytes and polyelectrolyte mixtures on the electrokinetic potential of dispersed particles. 1. Electrokinetic potential of polystyrene particles in solutions of surfactants, polyelectrolytes and their mixtures

Bárány

Škvarla

2013

Colloid J

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The effect of cationic and anionic surfactants, as well as cationic and anionic polyelectrolytes (PE), their binary mixtures on the electrokinetic potential of monodisperse carboxylated polystyrene (PS) particles as a function of the reagents dose, pH, the charge density (CD) of polymers, the surfactant/PE and binary PE mixture composition, and sequence of components addition to the suspension has been studied. It has been shown that addition of increasing amount of anionic surfactant/polyelectrolytes increases the abso lute value of the negative zeta potential of PS particles; this increase is stronger the CD of the PE and pH of the system are higher. Adsorption of cationic surfactant/polyelectrolytes leads to a significant decrease in the negative ζ potential and to overcharging the particles; changes in the ζ potential are more pronounced for PE samples with higher CD and for suspensions with lower pH values. In mixtures of cationic and anionic PE, in a wide range of mixture composition, the ζ potential of particles is determined by the adsorbed amount of the anionic polymer independently of the CD of PEs and the sequence of addition of the mixture components. The isoelectric point of the surface is reached at the adsorbed amount of positive charges of PE that is approximately equal to the surface CD of particles. The laws observed were explained by features of macromolecules conformation in adsorbed mixed PE layers. Considerations about the role of coulombic and non coulombic forces in the mechanism of anionic/cationic PE adsorption are presented.

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Utilization of Slovak bentonites in deposition of high-level radioactive waste and spent nuclear fuel

Galamboš

Rosskopfová

Kufčáková

et al. 2011

J Radioanal Nucl Chem

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Electrokinetic potential of bentonite and kaolin particles in the presence of polymer mixtures

Cited by 10 publications

References 16 publications

Polymer adsorption and electrokinetic potential of dispersed particles in weak and strong electric fields

Polymer adsorption and electrokinetic potential of dispersed particles in weak and strong electric fields

Effect of polyelectrolytes and polyelectrolyte mixtures on the electrokinetic potential of dispersed particles. 1. Electrokinetic potential of polystyrene particles in solutions of surfactants, polyelectrolytes and their mixtures

Utilization of Slovak bentonites in deposition of high-level radioactive waste and spent nuclear fuel

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