Journal
RUSSIAN JOURNAL OF GENERAL CHEMISTRY
Volume 83, Issue 8, Pages 1594-1595Publisher
MAIK NAUKA/INTERPERIODICA/SPRINGER
DOI: 10.1134/S1070363213080203
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Modification of the surface of submicron BaTiO3 particles by SiO2 layer using sol-gel method has led to significant (> 50%) increase in the dielectric permittivity and decrease in the dielectric losses of the composites prepared via introduction of BaTiO3 into a matrix of poly(vinyl alcohol) cyanoethyl ester. The effect has been due to the formation of basic hydroxy groups (Bronsted centers) at the filler surface; these groups can interact with weakly acidic hydroxyl groups of poly(vinyl alcohol) cyanoethyl ester, thus improving the compatibility of the polymer matrix and the filler.
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