Busca avançada
Ano de início
Entree
(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Synthesis and optimization of colloidal silica nanoparticles and their functionalization with methacrylic acid

Texto completo
Autor(es):
Arantes, Tatiane M. [1] ; Pinto, Alexandre H. [1] ; Leite, Edson R. [1] ; Longo, Elson [2] ; Camargo, Emerson R. [1]
Número total de Autores: 5
Afiliação do(s) autor(es):
[1] UFSCar Fed Univ Sao Carlos, Dept Chem, LIEC, BR-13565905 Sao Carlos, SP - Brazil
[2] UNESP Sao Paulo State Univ, Dept Biochem & Technol Chem, Chem Inst Araraquara, LIEC IQ, BR-14801907 Araraquara - Brazil
Número total de Afiliações: 2
Tipo de documento: Artigo Científico
Fonte: COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS; v. 415, p. 209-217, DEC 5 2012.
Citações Web of Science: 16
Resumo

The synthesis of colloidal SiO2 nanoparticles was achieved via the base-catalyzed hydrolysis and polycondensation of tetraethyl orthosilicate (TEOS) in an alcoholic medium with the careful variation of the concentrations of water, ammonia and TEOS. In this study, we investigated the influence of experimental parameters on the average size of nanoparticles by means of a multivariate statistical analysis using a factorial design to create one model to predict particle size in function of experimental conditions. This model predicted that it is possible to synthesize silica nanoparticles with size in the range from 17 to 333 nm, according to the chosen condition for the amount of water, ammonia and TEOS. It was observed that only the molar amount of NH3, the molar amount of H2O and the effect from interaction between molar amount of TEOS and H2O were significant. Subsequently, surface modification of the colloidal silica was performed in situ using the coupling agent 3(trimethoxysilyl)propyl methacrylate (TMSPM). (c) 2012 Elsevier B.V. All rights reserved. (AU)

Processo FAPESP: 08/09697-6 - Modificação das propriedades dos polímeros comerciais de SBR e NBR a partir da incorporação de nanopartículas sintéticas funcionalizadas
Beneficiário:Tatiane Moraes Arantes
Linha de fomento: Bolsas no Brasil - Doutorado
Processo FAPESP: 10/13735-0 - Síntese de nanopartículas semicondutoras de ZnSe com superfície hidrofílica através de método baseado na Química Verde
Beneficiário:Alexandre Henrique Pinto
Linha de fomento: Bolsas no Brasil - Mestrado