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Type: Artigo de periódico
Title: The influence of Na+ on the anilinepropylsilica xerogel synthesis by using the fluoride nucleophilic catalyst
Author: Pavan, FA
Gushikem, Y
Moro, CC
Costa, TMH
Benvenutti, EV
Abstract: Anilinepropylsilica xerogel was obtained by using an appropriate organosilane and tetraethyl orthosilicate as precursor reagents. The gelation was carried out using HIF and NaF as catalysts. The presence of Na+ (when NaF was used) resulted in a decrease in the final organic content of the materials. This effect was interpreted as an inhibition of the organosilane polycondensation possibly due to the Na+ interaction with the SiO- groups of the hydrolyzed organosilane. The presence of Na+ also results in morphological changes in the xerogels.
Subject: xerogel
sodium fluoride
hybrid powders
nanometric materials
Country: EUA
Editor: Springer-verlag
Citation: Colloid And Polymer Science. Springer-verlag, v. 281, n. 2, n. 173, n. 177, 2003.
Rights: fechado
Identifier DOI: 10.1007/s00396-002-0771-3
Date Issue: 2003
Appears in Collections:Unicamp - Artigos e Outros Documentos

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