Preparation and Physical Characterization of Nanocomposites of PLA/Layered Silicates

Restrepo I., Solorzano S.

Keywords: Biopolymers, Nanoclays, polylacticacid (PLA), polymer blends.


This work was focused in to study the compatibility, dispersion and exfoliation of modified nanoclays in biodegradable polymers and evaluate its effect on the physical, mechanical and thermal properties on the biodegradable matrix used. The formulations have been developed with polylactic acid (PLA) and organically modified montmorillonite-type commercial nanoclays (Cloisite 15, Cloisite 20, and Cloisite 30B) in the presence of a plasticizer agent, specifically Polyethylene Glycol of low molecular weight. Different compositions were evaluated, in order to identify the influence of each nanoclayin the polymeric matrix. The mixtures were characterized by thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), X-ray diffraction (DRX), transmission electron microscopy (TEM) and Tensile Test. These tests have allowed understanding the behavior of each of the mixtures developed.

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Título de la Revista: International Journal of Materials and Metallurgical Engineering
Volumen: 7
Número: 6
Editorial: Waset
Fecha de publicación: 2013
Página de inicio: 482
Página final: 486
Idioma: Ingles
Financiamiento/Sponsor: Unidad de Desarrollo tecnologico, UdeC - Proyecto Conicty ACE-05