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Artículo

Mild microwave-assisted synthesis of aluminum-pillared bentonites

Ninago, Mario DanielIcon ; Lopez, Olivia ValeriaIcon ; Passaretti, María GabrielaIcon ; Horst, María FernandaIcon ; Lassalle, Verónica LeticiaIcon ; Carbajal Ramos, Irene; Di Santo, Rogelio Oscar; Ciolino, Andrés EduardoIcon ; Villar, Marcelo ArmandoIcon
Fecha de publicación: 21/03/2017
Editorial: Springer
Revista: Journal of Thermal Analysis and Calorimetry
ISSN: 1388-6150
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Recubrimientos y Películas

Resumen

Two types of bentonites were modified using a cleaner method to prepare aluminum-pillared clays. This methodology involved a purifying stage, an intercalation process, and a microwave irradiation step at low energy power. Structural changes induced by pillaring process were demonstrated by thermal behavior, as well as morphological characterization. The effect of pillaring process on thermal stability of clays was studied, and the mass lost associated with the dehydroxylation of the octahedral clay sheets was not detected for modified bentonites. In addition, an analysis of their chemical composition and crystalline structure was also performed. Concerning industrial applications of these bentonites, two potential uses were proposed: (1) as reinforcement of different polymers matrices such as thermoplastic starch (TPS), high-density polyethylene (HDPE), and poly (styrene-b-butadiene-b-styrene), SBS; and (2) as removal agent for cadmium (Cd) species present in wastewaters. Bentonite particles reinforced thermoplastic starch matrix and increased ultraviolet barrier capacity of HDPE composites. Besides, bentonites improved the mechanical performance and modified barrier properties of SBS. Regarding effluents purification, an adequate Cd adsorption from aqueous solutions was observed (77%), proving their feasibility to be used as non-conventional removal agents.
Palabras clave: Aluminum-Pillaring , Bentonite , Cd Removal , Polymeric Filler Agent , Thermal Behavior , Wastewaters
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/36244
URL: https://link.springer.com/article/10.1007%2Fs10973-017-6304-6
DOI: http://dx.doi.org/10.1007/s10973-017-6304-6
Colecciones
Articulos(PLAPIQUI)
Articulos de PLANTA PILOTO DE INGENIERIA QUIMICA (I)
Citación
Ninago, Mario Daniel; Lopez, Olivia Valeria; Passaretti, María Gabriela; Horst, María Fernanda; Lassalle, Verónica Leticia; et al.; Mild microwave-assisted synthesis of aluminum-pillared bentonites; Springer; Journal of Thermal Analysis and Calorimetry; 129; 3; 21-3-2017; 1517-1531
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