Structural and Thermomechanical Evaluation of Bionanocomposites Obtained from Biodegradable Polymers with a Organoclay

Milena Costa da Silva; Sara Verusca de Oliveira; Edcleide Maria Araújo

doi:10.4028/www.scientific.net/MSF.775-776.178

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HomeMaterials Science ForumMaterials Science Forum Vols. 775-776Structural and Thermomechanical Evaluation of...

Structural and Thermomechanical Evaluation of Bionanocomposites Obtained from Biodegradable Polymers with a Organoclay

Abstract:

In this study bionanocomposites were prepared from biodegradable polymer matrices such as poly (lactic acid) (PLA) and PBAT/PLA blend commercially known as Ecovio^®, with abundant smectite clays in Paraíba and modified (OMMT) with Praepagen quaternary ammonium salt. Systems with PLA and with the blends of PBAT/PLA were prepared with addition of bentonite clay at a concentration of 3wt.%. in a twin screw corrotational extruder. The systems containing PLA/OMMT and blend of PBAT/PLA/OMMT were characterized by X-ray diffraction (XRD) and Heat Deflection Temperature (HDT). From the diffractograms of bionanocomposites PLA/OMMT and PBAT/PLA/ OMMT it was observed a probably microcomposite structure. It was also observed that the HDT of PBA/PLA/OMMT and the blend of PBAT/PLA bionanocomposites was lower in relation to pure PLA and its PLA/OMMT bionanocomposite.

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20th Brazilian Conference on Materials Science and Engineering

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Materials Science Forum (Volumes 775-776)

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178-182

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https://doi.org/10.4028/www.scientific.net/MSF.775-776.178

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Online since:

January 2014

Authors:

Milena Costa da Silva, Sara Verusca de Oliveira, Edcleide Maria Araújo

Keywords:

Bentonite Clay, Biodegradable Polymer, Bionanocomposites

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