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Romano, S.D; Acosta, E.O; Dürrschmidt, T.; Kurlat, D.H "Rheological and optical properties in systems containing TiO2 nanoparticles" (2001) Colloids and Surfaces A: Physicochemical and Engineering Aspects. 183-185:595-605
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Abstract:

In order to follow the sol-gel transition in systems containing TiO2 nanoparticles rheological and optical measurements were performed. Samples were prepared adding titanium(IV) butoxide (hydrolysis and condensation processes) to water/AOT/isooctane microemulsions. We prepared different systems at constant Wo=[H2O]/[AOT] while varying R=[H2O]/[Ti(BuO)4] to study the behaviour of viscoelastic parameters (G′, G′′ and η*) as a function of time at different frequencies as well as to analyse the Kerr constant (B) as a function of R. This work discusses the application of different theoretical approaches: scaling theory, 'fractal growth model' and 'nearly linear growth model'. These experiments were complemented with light scattering measurements. Either static and dynamic optical determinations show an abrupt increase in the size of scattering particles. A significant increase in B values was observed for concentrations below gelification point when they were compared with those determined by light scattering. Copyright © 2001 Elsevier Science B.V.

Registro:

Documento: Artículo
Título:Rheological and optical properties in systems containing TiO2 nanoparticles
Autor:Romano, S.D; Acosta, E.O; Dürrschmidt, T.; Kurlat, D.H
Filiación:Laboratorio de Sistemas Líquidos, Departamento de Física, Universidad de Buenos Aires (UBA), Paseo Colón 850, 1063 Buenos Aires, Argentina
Departamento de Ingeniería Mecánica y Naval, Facultad de Ingeniería, UBA, Paseo Colón 850, (1063) Buenos Aires, Argentina
Departamento de Física, Laboratorio de Electroóptica, Facultad de Ingeniería, UBA, Paseo Colón 850 (1063), Buenos Aires, Argentina
Lehrstuhl für Physikalische Chemie i, NWI, Universität Bayreuth, D-95440 Bayreuth, Germany
Palabras clave:Kerr effect; Light scattering; Rheology; Sol-gel transition; TiO2 nanoparticles; Condensation; Hydrolysis; Light scattering; Microemulsions; Nanostructured materials; Rheology; Sol-gels; Tungsten compounds; Viscoelasticity; Water; Optical measurements; Titanium oxides; nanoparticle; titanium dioxide; article; energy; flow kinetics; gel; hydrolysis; light scattering; microemulsion; phase transition; physical phase; polymerization; priority journal; viscosity
Año:2001
Volumen:183-185
Página de inicio:595
Página de fin:605
DOI: http://dx.doi.org/10.1016/S0927-7757(01)00516-7
Título revista:Colloids and Surfaces A: Physicochemical and Engineering Aspects
Título revista abreviado:Colloids Surf. A Physicochem. Eng. Asp.
ISSN:09277757
CODEN:CPEAE
CAS:titanium dioxide, 1317-70-0, 1317-80-2, 13463-67-7, 51745-87-0
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09277757_v183-185_n_p595_Romano

Referencias:

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Citas:

---------- APA ----------
Romano, S.D, Acosta, E.O, Dürrschmidt, T. & Kurlat, D.H (2001) . Rheological and optical properties in systems containing TiO2 nanoparticles. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 183-185, 595-605.
http://dx.doi.org/10.1016/S0927-7757(01)00516-7
---------- CHICAGO ----------
Romano, S.D, Acosta, E.O, Dürrschmidt, T., Kurlat, D.H. "Rheological and optical properties in systems containing TiO2 nanoparticles" . Colloids and Surfaces A: Physicochemical and Engineering Aspects 183-185 (2001) : 595-605.
http://dx.doi.org/10.1016/S0927-7757(01)00516-7
---------- MLA ----------
Romano, S.D, Acosta, E.O, Dürrschmidt, T., Kurlat, D.H. "Rheological and optical properties in systems containing TiO2 nanoparticles" . Colloids and Surfaces A: Physicochemical and Engineering Aspects, vol. 183-185, 2001, pp. 595-605.
http://dx.doi.org/10.1016/S0927-7757(01)00516-7
---------- VANCOUVER ----------
Romano, S.D, Acosta, E.O, Dürrschmidt, T., Kurlat, D.H. Rheological and optical properties in systems containing TiO2 nanoparticles. Colloids Surf. A Physicochem. Eng. Asp. 2001;183-185:595-605.
http://dx.doi.org/10.1016/S0927-7757(01)00516-7