The influence of DTABr surfactant on the electrokinetic and rheological properties of soda-activated bentonite dispersions

S. Işçi; E. Günister; A. Alemdar; Ö I. Ece; N. Güngör

doi:10.1016/j.matlet.2007.03.113

The influence of DTABr surfactant on the electrokinetic and rheological properties of soda-activated bentonite dispersions

S. Işçi, E. Günister, A. Alemdar^*, Ö I. Ece, N. Güngör

^*Corresponding author for this work

Department of Physics Engineering

Istanbul Technical University

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

The influence of the cationic surfactant dodecyltrimethylammonium bromide (DTABr) on the electrokinetic and rheological properties of a soda-activated bentonite was investigated. The electrokinetic and rheological measurements of the surfactant-bentonite (2 wt.%) system were performed at three pH values of 4, 8 and 12. The electrokinetic measurement results show that the DTABr was adsorbed on the bentonite mostly at pH 4 and 8, whereas X-ray diffraction (XRD) studies revealed that the DTABr surfactant enters the interlamellar space of the clay mineral at pH 8 and 12. Rheological data showed that the flow behavior changed with the surfactant concentration. The basal d₍₀₀₁₎-spacings of DTABr-treated bentonite samples revealed expandability, from 14.8 to 16.8 Å. XRD results indicate a monolayer arrangement of the DTABr molecules parallel to the silicate layer.

Original language	English
Pages (from-to)	81-84
Number of pages	4
Journal	Materials Letters
Volume	62
Issue number	1
DOIs	https://doi.org/10.1016/j.matlet.2007.03.113
Publication status	Published - 15 Jan 2008

Funding

The authors acknowledge financial support received from Research Fund of the Istanbul Technical University under grant 1299.

Funders	Funder number
Istanbul Teknik Üniversitesi	1299

Keywords

Basal d-spacing
Dodecyltrimethylammonium bromide
pH
Rheology
Soda-activated bentonite
Zeta potential

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10.1016/j.matlet.2007.03.113

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title = "The influence of DTABr surfactant on the electrokinetic and rheological properties of soda-activated bentonite dispersions",

abstract = "The influence of the cationic surfactant dodecyltrimethylammonium bromide (DTABr) on the electrokinetic and rheological properties of a soda-activated bentonite was investigated. The electrokinetic and rheological measurements of the surfactant-bentonite (2 wt.%) system were performed at three pH values of 4, 8 and 12. The electrokinetic measurement results show that the DTABr was adsorbed on the bentonite mostly at pH 4 and 8, whereas X-ray diffraction (XRD) studies revealed that the DTABr surfactant enters the interlamellar space of the clay mineral at pH 8 and 12. Rheological data showed that the flow behavior changed with the surfactant concentration. The basal d(001)-spacings of DTABr-treated bentonite samples revealed expandability, from 14.8 to 16.8 {\AA}. XRD results indicate a monolayer arrangement of the DTABr molecules parallel to the silicate layer.",

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AU - Günister, E.

AU - Alemdar, A.

AU - Ece, Ö I.

AU - Güngör, N.

PY - 2008/1/15

Y1 - 2008/1/15

N2 - The influence of the cationic surfactant dodecyltrimethylammonium bromide (DTABr) on the electrokinetic and rheological properties of a soda-activated bentonite was investigated. The electrokinetic and rheological measurements of the surfactant-bentonite (2 wt.%) system were performed at three pH values of 4, 8 and 12. The electrokinetic measurement results show that the DTABr was adsorbed on the bentonite mostly at pH 4 and 8, whereas X-ray diffraction (XRD) studies revealed that the DTABr surfactant enters the interlamellar space of the clay mineral at pH 8 and 12. Rheological data showed that the flow behavior changed with the surfactant concentration. The basal d(001)-spacings of DTABr-treated bentonite samples revealed expandability, from 14.8 to 16.8 Å. XRD results indicate a monolayer arrangement of the DTABr molecules parallel to the silicate layer.

AB - The influence of the cationic surfactant dodecyltrimethylammonium bromide (DTABr) on the electrokinetic and rheological properties of a soda-activated bentonite was investigated. The electrokinetic and rheological measurements of the surfactant-bentonite (2 wt.%) system were performed at three pH values of 4, 8 and 12. The electrokinetic measurement results show that the DTABr was adsorbed on the bentonite mostly at pH 4 and 8, whereas X-ray diffraction (XRD) studies revealed that the DTABr surfactant enters the interlamellar space of the clay mineral at pH 8 and 12. Rheological data showed that the flow behavior changed with the surfactant concentration. The basal d(001)-spacings of DTABr-treated bentonite samples revealed expandability, from 14.8 to 16.8 Å. XRD results indicate a monolayer arrangement of the DTABr molecules parallel to the silicate layer.

KW - Basal d-spacing

KW - Dodecyltrimethylammonium bromide

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KW - Rheology

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KW - Zeta potential

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The influence of DTABr surfactant on the electrokinetic and rheological properties of soda-activated bentonite dispersions

Abstract

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Keywords

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