Hostname: page-component-78c5997874-m6dg7 Total loading time: 0 Render date: 2024-11-10T13:37:48.215Z Has data issue: false hasContentIssue false
  • English
  • Français

Smectite Quasicrystals in Aqueous Solutions as a Function of Cationic Surfactant Concentration

Published online by Cambridge University Press:  01 January 2024

Satoru Kuwaharada ,
Hiroshi Tateyama ,
Satoshi Nishimura  and
Hideharu Hirosue
Satoru Kuwaharada*
Affiliation:
Kagoshima Prefecture Institute of Industrial Technology, 1445-1, Oda Hayato-cho, Aira-gun, Kagoshima Prefecture, 899-5105 Japan
Hiroshi Tateyama
Affiliation:
National Institute of Advanced Industrial Science and Technology, Shuku-machi, Tosu city, Saga Prefecture, 841-0052 Japan
Satoshi Nishimura
Affiliation:
National Institute of Advanced Industrial Science and Technology, Shuku-machi, Tosu city, Saga Prefecture, 841-0052 Japan
Hideharu Hirosue
Affiliation:
Cooperative Research Center Kumamoto University, 2081-7 Tabaru, Mashiki-machi, Kamimashiki-gun, Kumamoto Prefecture, 861-2202 Japan
*
*E-mail address of corresponding author: kharada@kagoshimait.go.jp
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Quasicrystals of synthetic fluoromagnesian smectite (FMS) in dodecyltrimethylammonium chloride (DTAC) solutions were investigated as a function of the DTAC concentration by wet type X-ray diffraction (XRD) ζ potential measurements, and dispersion and coagulation (DC) tests. The FMS had an electronegative potential and it was dispersed randomly in an aqueous suspension without DTAC. When the DTAC concentration was 0.002 mol/dm3, FMS tactoids started to develop a structure in which the layer thickness was 1.85 nm. At the isoelectric point, the DTAC concentration was 0.012 mol/dm3 and the FMS tactoid formed a regular stacked structure with a 2.25 nm layer thickness. As the ζ potential of FMS changed from negative to positive, the DC test and XRD measurement showed that the FMS association gradually changed from coagulation to dispersion, which indicates that the formation of the bilayer of surfactants on the surface of FMS produces a repulsion between DTA+ adsorbed on the silicate layer of the FMS surfaces. When the equilibrium concentration of DTAC in solution exceeded the critical micelle concentration (CMC), the ζ potential of FMS became greater than the previous values. The XRD analysis of this suspension showed that there were two kinds of rational FMS stackings; one has a layer thickness of 3.20 nm, and the other has a layer thickness of 5.45 nm due to an interstratified structure composed of 3.20 and 2.25 nm layers. The interstratified structure was confirmed by the calculated XRD profiles.

Keywords

Calculated XRD ProfileInterstratificationLayer ThicknessQuasicrystalStacking StructureWet Type XRDζ Potential
Type
Research Article
Information
Clays and Clay Minerals , Volume 50 , Issue 1 , February 2002 , pp. 18 - 24
Copyright
Copyright © 2002, The Clay Minerals Society

References

Hendricks, S. and Teller, E., (1942) X-ray interference in partially ordered layer lattices Journal of Chemical Physics 10 147–167 10.1063/1.1723678.Google Scholar
Jacob, N.I., (1985) Intermolecular and Surface Forces Tokyo Academic Press 111 119.Google Scholar
Noma, H., Tateyama, H., Nishimura, S. and Inoue, K. (1997) 29Si and 1H NMR of expandable mica ion-exchanged by NH4 +. Chemistry Letters, 199–200.Google Scholar
Sato, M., (1987) Interstratified (mixed layer) structure and their theoretical X-ray powder patterns. I. Theoretical aspects Clay Science 7 1 48.Google Scholar
Sato, M., (1988) Interstratified (mixed layer) structure and their theoretical X-ray powder patterns. II. In the case of illite/montmorillonite interstratification Clay Science 7 3 88.Google Scholar
Takeda, S. and Usui, S., (1987) Adsorption of dodecylammonium ion on quartz in relation to its flotation Colloids and Surfaces 23 15–28 10.1016/0166-6622(87)80246-9.Google Scholar
Tateyama, H. Noma, H. Nishimura, S. Adachi, Y. Ooi, M. and Urabe, K., (1988) Interstratification in expandable mica produced by cation-exchange treatment Clays and Clay Minerals 46 245–255 10.1346/CCMN.1998.0460304.Google Scholar
Tateyama, H. Nishimura, S. Tsunematsu, K. Jinnai, K. Adachi, Y. and Kimura, M., (1992) Synthesis of expandable fluorine mica Clays and Clay Minerals 40 180–185 10.1346/CCMN.1992.0400207.Google Scholar
Tateyama, H. Tsunematsu, K. Noma, H. and Adachi, Y., (1996) Formation of expandable mica from talc using intercalation procedures Journal of the American Ceramic Society 179 3321–3324 10.1111/j.1151-2916.1996.tb08113.x.Google Scholar
Tateyama, H. Scales, P.J. Ooi, M. Johnson, S.B. Rees, K. Boger, D.V. and Healy, T.W., (1997) Effects of particle alignment on the flow properties of an expandable mica in Na5P3O10 and K4P2O7 solutions Langmuir 13 6393–6399 10.1021/la962020d.Google Scholar
Watanabe, T., (1988) The structural model of illite/smectite interstratified mineral and the diagram for its identification Clay Science 7 97 114.Google Scholar