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Memorias de investigación
Artículos en revistas:
Study of the effects of the reaction conditions on the modification of clays with polyelectrolytes and silanes.
Año:2009
Áreas de investigación
  • Polimeros
Datos
Descripción
New organically modified clays have been obtained from sodium montmorillonite, using either a cationic polyelectrolyte (polyethylenimine) or a novel homemade bisphenol-A silane as modifiers. The modification processes have been carried out in different reaction media, in order to study the effects on the prop- erties of the modified clays of several reaction parameters, such as the pH of the polyethylenimine solution or the nature of the solvent used in the silanization. The obtained clays were characterized using Keywords: X-ray diffraction, thermogravimetric analysis, and FTIR spectroscopy. Clays modified with polyelectrolyte Clay or silane show significant increases in the basal spacing. The properties of polyelectrolyte-modified clays Interlayer spacing depend on the pH of the treating solution. The increase in the basal spacing of polyelectrolyte-modified Thermogravimetric analysis clays varies only slightly with the pH; however, this reaction parameter clearly determines the total Polyethylenimine amount of polyelectrolyte introduced in the clay. The properties and applications of silane-modified clays Silane are strongly dependent on the presence of water in the reaction media used for the silanization. These results have been explained by considering that the reaction conditions determine the nature and the amount of material intercalated into the clay.
Internacional
Si
JCR del ISI
Si
Título de la revista
JOURNAL OF COLLOID AND INTERFACE SCIENCE
ISSN
0021-9797
Factor de impacto JCR
2,443
Información de impacto
Volumen
342
DOI
10.1016/j.jcis.2009.10.014
Número de revista
0
Desde la página
185
Hasta la página
191
Mes
ENERO
Ranking
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Participantes
  • Autor: Vicente Lorenzo Esteban (UPM)
  • Autor: Javier Arranz Andres (UPM)
  • Autor: Joaquin Maria Martinez Urreaga (UPM)
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Polímeros, Caracterización y Aplicaciones
  • Departamento: Ingeniería Química Industrial y del Medio Ambiente
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