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Título

Synergic effect of two inorganic fillers on the mechanical and thermal properties of hybrid polypropylene composites

Autor Aguilar, Héctor; Yazdani-Pedram, Mehrdad; Toro, Patricio; Quijada, Raúl; López-Manchado, Miguel A.
Palabras clave Inorganic fillers
Mechanical properties
Hybrid nanocomposites
Polypropylene
Thermal properties
Fecha de publicación 2014
EditorSociedad Chilena de Química
Citación Journal of the Chilean Chemical Society 59: 2468- 2473 (2014)
ResumenAll right reserved. Inorganic fillers such as CaCO3 and clays are widely used as fillers to improve the mechanical and physical properties of polypropylene (PP). With the aim of improving simultaneously the stiffness and yield stress of PP, hybrid nanocomposites comprising PP/CaCO3/clay (montmorillonite) were prepared and their thermal and mechanical properties were investigated and compared with those of PP/CaCO3 and PP/clay composites. Morphological characterizations of the composites were performed by SEM and XRD analyses. The results showed exfoliated clay in the hybrid composite with a much higher degree than in PP/ clay composite. Increase in modulus and yield stress and better thermal stability was attained for hybrid composites as a result of the clay exfoliation. The toughening effect of two different types of CaCO3 particles was also observed in hybrid composites, where an effective enhancement of the mechanical and thermal properties were achieved depending on the origin, specific area, particle and pore size of the CaCO3 used.
URI http://hdl.handle.net/10261/103146
DOI10.4067/S0717-97072014000200015
Identificadoresdoi: 10.4067/S0717-97072014000200015
issn: 0717-9324
e-issn: 0717-9707
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