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Title of Article

EFFECT OF ADDITIVES OF ORGANIC BASES AND WEAK ELECTROLYTES ON RHEOLOGICAL AND ELECTROKINETIC PROPERTIES OF BOEHMITE SOLS


Issue
5
Date
 2013

Article type
 scientific article
UDC
541.182.025/.026:544.77.032.14:546.62
Pages
120-123
Keywords
boehmite sol, viscosity, electrokinetic potential, hexamethylenetetramine, acetamide, dimethylformamide, urea, peptization


Authors
Drobotenko V.V.
Institut khimii vysokochistykh veschestv im. G.G. Devyatykh RAN, N. Novgorod

Rostokina E.E.
Nizhegorodskiy gosuniversitet im. N.I. Lobachevskogo

Gavrischuk E.M.
Institut khimii vysokochistykh veschestv im. G.G. Devyatykh RAN, N. Novgorod

Balabanov S.S.
Institut khimii vysokochistykh veschestv im. G.G. Devyatykh RAN, N. Novgorod


Abstract
The effect of organic bases and weak electrolytes on viscosity and electrokinetic potential of boehmite sols was studied. The introduction of hexamethylenetetramine, acetamide and ammonium salts of formic and acetic acids in boehmite sol has been found to lead to a significant increase of the viscosity of sols. Dimethylformamide and urea additives decrease the viscosity of sols and increase the ?-potential. The reasons for such behaviour of boehmite sols are discussed as dependent on the chemical properties of the additives introduced.

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