Hostname: page-component-745bb68f8f-b95js Total loading time: 0 Render date: 2025-01-11T05:49:32.275Z Has data issue: false hasContentIssue false
  • English
  • Français

Surface chemistry, rheology and microstructure of as-received SHCa-1 hectorite gels

Published online by Cambridge University Press:  01 August 2019

Pek-Ing Au ,
Mingyong Du ,
Jishan Liu ,
Md. Bashirul Haq  and
Yee-Kwong Leong Open the ORCID record for Yee-Kwong Leong [Opens in a new window]
Pek-Ing Au
Affiliation:
Department of Chemical Engineering, The University of Western Australia, Crawley 6009, Australia Department of Chemical Engineering, Curtin University Miri, Sarawak, Malaysia 98009
Mingyong Du
Affiliation:
Department of Chemical Engineering, The University of Western Australia, Crawley 6009, Australia
Jishan Liu
Affiliation:
Department of Chemical Engineering, The University of Western Australia, Crawley 6009, Australia
Md. Bashirul Haq
Affiliation:
Department of Petroleum Engineering, College of Petroleum and Geosciences, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
Yee-Kwong Leong*
Affiliation:
Department of Chemical Engineering, The University of Western Australia, Crawley 6009, Australia
*
*E-mail: [email protected]
Get access Rights & Permissions [Opens in a new window]

Abstract

The zeta potential and yield-stress behaviour of gels prepared from as-received SHCa-1 hectorite (Ht) containing 50 wt.% impurities, mainly of calcite, dolomite and quartz, were characterized. The zeta potential is negative in the pH range 4–12. At pH <5, reaction of CaCO3 producing CO2 and Ca2+ increased the solution conductivity significantly and reduced the zeta potential. The buffering effect due to this chemical reaction was also observed in the yield stress–pH characterization below pH 8. Low yield stress was observed below pH 6 and above pH 12. The yield stress peaked at pH ~8, where Ht displayed a zeta potential of –20 mV. The relationship between maximum yield stress and Ht content (wt.%) was linear and was not affected by impurities. The ageing behaviour was characterized by an initial phase of rapid yield-stress increase and then by a phase of gradual increase. The Leong model performed better than the two-parameter glassy polymer ageing model in describing this ageing behaviour. However, the empirical power law model was more accurate. The timescale of the ageing process is long, lasting several days. An open cellular microstructure was observed to form in the gels. Impurities appeared not to interact with or bind to the Ht platelets.

Keywords

ageing modellingdolomiteopen cellular microstructurethixotropyyield stresszeta potential
Type
Article
Information
Clay Minerals , Volume 54 , Issue 3 , September 2019 , pp. 269 - 275
Copyright
Copyright © Mineralogical Society of Great Britain and Ireland 2019 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Footnotes

Associate Editor: Laurent Michot

References

Arizzi, A., Hendrickx, R., Cultrone, G. & Van Balen, K. (2012) Differences in the rheological properties of calcitic and dolomitic lime slurries: influence of particle characteristics and practical implications in lime-based mortar manufacturing. Materiales de Construcción, 62, 231–250.Google Scholar
Au, P.I. & Leong, Y.K. (2013) Rheological and zeta potential behaviour of kaolin and bentonite composite slurries. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 436, 530–541.Google Scholar
Au, P.I. & Leong, Y.K. (2015) Surface chemistry and rheology of Laponite dispersions – zeta potential, yield stress, ageing, fractal dimension and pyrophosphate. Applied Clay Science, 107, 36–45.Google Scholar
Au, P.I. & Leong, Y.K. (2016) Surface chemistry and rheology of slurries of kaolinite and montmorillonite from different sources. KONA, 33, 17–32.Google Scholar
Brandenburg, U. & Lagaly, G. (1988) Rheological properties of sodium montmorillonite dispersions. Applied Clay Science, 3, 263–279.Google Scholar
Callaghan, I.C. & Ottewill, R.H. (1974) Interparticle forces in montmorillonite gels. Faraday Discussions of the Chemical Society, 57, 110–118.Google Scholar
Chow, T.S. (1993) Stress–strain behaviour of physically ageing polymers. Polymer, 34, 541–545.Google Scholar
Christidis, G.E., Blum, A.E. & Eberl, D.D. (2006) Influence of layer charge and charge distribution of smectites on the flow behaviour and swelling of bentonites. Applied Clay Science, 34, 125–138.Google Scholar
Christidis, G.E., Aldana, C., Chryssikos, G.D., Gionis, V., Kalo, H., Stöter, M., Breu, J. & Robert, J.-L. (2018) The nature of Laponite: pure hectorite or a mixture of different trioctahedral phases? Minerals, 8, 314.Google Scholar
Cocard, S., Tassin, J.F. & Nicolai, T. (2000) Dynamical mechanical properties of gelling colloidal disks. Journal of Rheology, 44, 585–594.Google Scholar
de Kretser, R.G. & Boger, D.V. (2001) A structural model for the time-dependent recovery of mineral suspensions. Rheologica Acta, 40, 582–590.Google Scholar
Du, M.Y, Liu, J.S, Clode, P.L. & Leong, Y.K. (2018) Surface chemistry, rheology and microstructure of purified natural and synthetic hectorite suspensions. Physical Chemistry Chemical Physics, 20, 19221–19233.Google Scholar
Du, M.Y., Liu, J.S., Clode, P. & Leong, Y.K. (2019) Microstructure and rheology of bentonite slurries containing multiple-charge phosphate-based additives. Applied Clay Science, 169, 120–128.Google Scholar
Houghton, H.A., Hasnain, I.A. & Donald, A.M. (2008) Particle tracking to reveal gelation of hectorite dispersions. European Physics Journal E, 25, 119–127.Google Scholar
Jonsson, B., Labbez, C. & Cabane, B. (2008) Interaction of nanometric clay platelets. Langmuir, 24, 11406–11413.Google Scholar
Kleshchanok, D., Meester, V., Pompe, C.E., Hilhorst, J. & Lekkerkerker, H.N.W. (2012) Effects of added silica nanoparticles on hectorite gels. Journal of Physical Chemistry B, 116, 9532–9539.Google Scholar
Leong, Y.K., Scales, P.J., Healy, T.W. & Boger, D.V. (1995) Effect of particle size on colloidal ZrO2 rheology at the isoelectric point. Journal of American Ceramic Society, 78, 2209–2212.Google Scholar
Leong, Y.K., Du, M., Au, P.I., Clode, P.L. & Liu, J. (2018) Microstructure of sodium montmorillonite gels with long ageing timescale. Langmuir, 34, 9673–9682.Google Scholar
Lockhart, N.C. (1980) Electrical properties and the surface characteristics and structure of clays. I. Swelling clays. Journal of Colloid Interface Science, 74, 509–519.Google Scholar
Mourchid, A., Delville, A., Lambard, J., Lecolier, E. & Levitz, P. (1995) Phase diagram of colloidal dispersions of anisotropic charged particles: equilibrium properties, structure, and rheology of Laponite dispersions. Langmuir, 11, 1942–1950.Google Scholar
Mouzon, J., Bhuiyan, I.U. & Hedlund, J. (2016) The structure of montmorillonite gels revealed by sequential cryo-XHR SEM imaging. Journal of Colloid Interface Science, 465, 58–66.Google Scholar
Nguyen, Q.D. & Boger, D.V. (1983) Yield stress measurement for concentrated suspensions. Journal of Rheology, 27, 321–349.Google Scholar
Norrish, K. (1954) The swelling of montmorillonite. Discussions of the Faraday Society, 18, 120–134.Google Scholar
Odom, I.E. (1984) Smectite clay minerals: properties and uses. Philosophical Transaction of the Royal Society London A, 311, 391–409.Google Scholar
Paineau, E., Michot, L.J., Bihannic, I. & Baravian, C. (2011) Aqueous suspensions of natural swelling clay minerals. 2. Rheological characterization. Langmuir, 27, 7806–7819.Google Scholar
Pignon, F., Magnin, A. & Piau, J.M. (1998) Thixotropic behavior of clay dispersions: combinations of scattering and rheometric techniques. Journal of Rheology, 42, 1349–1373.Google Scholar
Pignon, F., Magnin, A., Piau, J.M., Cabane, B., Lindner, P. & Diat, O. (1997) Yield stress thixotropic clay suspension: investigations of structure by light, neutron, and X-ray scattering. Physical Review E, 56, 3281–3289.Google Scholar
Ruzicka, B., Zaccarelli, E., Zulian, L., Angelini, R., Sztucki, M., Moussaïd, A., Narayanan, T. & Sciortino, F. (2011) Observation of empty liquids and equilibrium gels in a colloidal clay. Nature Materials, 10, 56–60.Google Scholar
Rich, J.P., Lammerding, J., McKinley, G.H. & Doyle, P.S. (2011) Nonlinear microrheology of an aging, yield stress fluid using magnetic tweezers. Soft Matter, 7, 9933–9943.Google Scholar
Spagnoli, G. & Feinendegen, M. (2017) Relationship between measured plastic limit and plastic limit estimated from undrained shear strength, water content ratio and liquidity index. Clay Minerals, 52, 509–519.Google Scholar
Tanaka, H., Meunier, J. & Bonn, D. (2004) Nonergodic states of charged colloidal dispersions: repulsive and attractive glasses and gels. Physical Review E, 69, 031404.Google Scholar
Terzaghi, K. (1925) Erdbaumechanik auf Bodenphysikalischer Grundlage. Franz Deuticke, Vienna, Austria.Google Scholar
van Olphen, H. (1955) Forces between suspended bentonite particles. Clays and Clay Minerals, 4, 204–224.Google Scholar
Yap, J., Leong, Y.K. & Liu, J.S. (2011) Structural recovery behaviour of barite-loaded bentonite drilling muds. Journal of Petroleum Science and Engineering, 78, 552–558.Google Scholar
Zbik, M.S., Martens, W.N., Frost, R.L., Song, Y.F., Chen, Y.M. & Chen, J.H. (2008) Transmission X-ray microscopy (TXM) reveals the nanostructure of a smectite gel. Langmuir, 24, 8954–8958.Google Scholar