Premium
Morphology and thermomechanical properties of recycled PET–organoclay nanocomposites
Author(s) -
Bizarria Maria T. M.,
Giraldi André L. F. de M.,
de Carvalho Cesar M.,
Velasco Jose I.,
d'Ávila Marcos A.,
Mei Lucia H. I.
Publication year - 2007
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.25836
Subject(s) - organoclay , materials science , nanocomposite , composite material , exfoliation joint , dynamic mechanical analysis , intercalation (chemistry) , montmorillonite , modulus , transmission electron microscopy , polymer , nanotechnology , inorganic chemistry , chemistry , graphene
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. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 104: 1839–1844, 2007