The Effect of Particle Sizes on the Concentration Dependence of the Surface Tension of Aqueous Suspensions of Bentonite

Author:

Dadashev R.Kh.1,Dzhambulatov R.S.2,Khasbulatova Z.S.3,Talkhigova Kh.S.4

Affiliation:

1. Chechen State University

2. Kh. Ibragimov Complex Institute of the Russian Academy of Sciences

3. Chechen State Pedagogical University

4. Materials Issues, Science Center of Academy of Sciences of the Chechen Republic

Abstract

The paper presents experimental results on the dependence of surface tension on the concentration of a suspension of bentonite (0 - 10% by weight). The isotherms σ of aqueous suspensions of bentonite are characterized by local minima in the concentration range of 3-4 mass% of the solid phase. It has been established that a decrease in the average particle size leads to the disappearance of the extremum on the surface tension isotherms. The data obtained led to the conclusion that the most important factors affecting the nature of the isotherms of the surface tension of bentonite suspensions are the degree of dispersion and the presence in the aqueous suspension of bentonite, both colloidal and coarse particles.

Publisher

Trans Tech Publications, Ltd.

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science

Reference11 articles.

1. Vakalova V., Khabas T.A., Pogrebenkov V.M., Vereshchagin V.I., Clays structure, properties and research methods, Tomsk, (2005).

2. Dadashev R., Thermodynamics of surface phenomena. Cambridge international science publishing, Cambridge, (2008).

3. Dadashev R.H., Dzhambulatov R.S., Elimkhanov D.Z., Installation for the study of surface properties of the phase boundary (DSA-100), Bulletin of the Academy of Sciences of the Chechen Republic, 1, (2011), 13-17.

4. Dadashev R.H., Dzhambulatov R.S., Elimkhanov D.Z., Measurement of surface tension by hanging drop method on a DSA-100 tensiometer. Works of the CSRI RAS, 5, (2012), 3–7.

5. Dadashev R.Kh., Elimkhanov D.Z., Jambulatov R.S., Features of the concentration dependences of the surface tension of water suspensions of bentonites. Russian Journal of Physical Chemistry A., 89, (2015), 1504-1506.

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