Aggregate stability of aqueous sols prepared from the OX-50 aerosil in electrolyte solution

Autor:	V. S. Grigor’ev, E. V. Golikova, G. N. Kuz’min, M. P. Syomov
Rok vydání:	2007
Předmět:	Aqueous solution Chemistry Nanoparticle Ionic bonding Mineralogy Electrolyte Condensed Matter Physics Colloid Chemical engineering Materials Chemistry Ceramics and Composites Coagulation (water treatment) Dispersion (chemistry) Fumed silica
Zdroj:	Glass Physics and Chemistry. 33:199-208
ISSN:	1608-313X 1087-6596
DOI:	10.1134/s1087659607030029
Popis:	The aggregate stability of aqueous sols prepared from the OX-50 Aerosil is investigated at pH 35-10 in the KCl and BaCl2 concentration range 10−4−10−1 M. It is demonstrated that the results obtained can be explained in the framework of the classical Derjaguin-Landau-Verwey-Overbeek theory of the stability of lyophobic colloids. It is revealed that, for the OX-50 nanoparticles, there is a region of parameters of the dispersion medium for which long-range interactions between particles due to the predominance of the molecular (dispersion) attractive forces over the ionic electrostatic forces can lead to coagulation of the sol.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::db9f138b587cdad821c05b688d09ce72 https://doi.org/10.1134/s1087659607030029 Zobrazit plný text záznamu Full text from SpringerLink