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Type: Artigo de periódico
Title: Morphology and thermomechanical properties of recycled PET-organoclay nanocomposites
Author: Bizarria, MTM
Giraldi, ALFDM
de Carvalho, CM
Velasco, JI
d'Avila, MA
Mei, LHI
Abstract: Recycled PET/organoclay nanocomposites were prepared by melt intercalation process with several amounts (1, 3, and 5 wt %) of clay modified with quaternary ammonium salt (DELLITE 67G) dispersed in a recycled poly (ethylene terephthalate) (rPET) matrix. The resultant mechanical properties (modulus and yield strength) of the nanocomposites were found to be different from those of rPET. Wide angle X-ray scattering (WAXS) and Transmission Electron Microscopy (TEM) measurements have shown that although complete exfoliation was not achieved, delaminated clay platelets could be observed. Thermal analysis did not show significant changes in the thermal properties from those of recycled PET. Mechanical testing showed that nanocomposite properties were superior to the recycled PET in terms of strength and elasticity modulus. This improvement was attributed to nanoscale effects and strong interaction between the rPET matrix and the clay interface, as revealed by WAXS and TEM. (c) 2007 Wiley Periodicals, Inc.
Subject: recycled pet
thermomechanical properties
Country: EUA
Editor: John Wiley & Sons Inc
Citation: Journal Of Applied Polymer Science. John Wiley & Sons Inc, v. 104, n. 3, n. 1839, n. 1844, 2007.
Rights: fechado
Identifier DOI: 10.1002/APP.25836
Date Issue: 2007
Appears in Collections:Unicamp - Artigos e Outros Documentos

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