Desenvolvimento e caracterização de compósitos poli(tereftalato de etileno) reciclado (PET reciclado) com flocos de vidro.
The growing concern with the solid residues management, observed in the last decade, due to its huge amount and impact, has motivated the search for recycling processes, where these residues can be reprocessed to generate new products, enlarging the cycle of materials and energy which are present...
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| Formato: | doctoralThesis |
| Idioma: | por |
| Publicado em: |
Universidade Federal do Rio Grande do Norte
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| Endereço do item: | https://repositorio.ufrn.br/jspui/handle/123456789/12784 |
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| Resumo: | The growing concern with the solid residues management, observed in the last
decade, due to its huge amount and impact, has motivated the search for recycling
processes, where these residues can be reprocessed to generate new products,
enlarging the cycle of materials and energy which are present. Among the polymeric
residues, there is poly (ethylene terephthalate) (PET). PET is used in food
packaging, preferably in the bottling of carbonated beverages. The reintegration of
post-consumer PET in half can be considered a productive action mitigation of
environmental impacts caused by these wastes and it is done through the
preparation of several different products at the origin, i.e. food packaging, with
recycling rates increasing to each year. This work focused on the development and
characterization mechanical, thermal, thermo-mechanical, dynamic mechanical
thermal and morphology of the pure recycled PET and recycled PET composites with
glass flakes in the weight fraction of 5%, 10% and 20% processed in a single screw
extruder,
using the following analytical techniques: thermogravimetry (TG), differential
scanning calorimetry (DSC), tensile, Izod impact, Rockwell hardness, Vicat softening
temperature, melt flow rate, burn rate, dynamic mechanical thermal analysis (DMTA)
and scanning electron microscopy (SEM). The results of thermal analysis and
mechanical properties leading to a positive evaluation, because in the thermograms
the addition of glass flakes showed increasing behavior in the initial temperatures of
thermal decomposition and melting crystalline, Furthermore was observed growing
behavior in the mechanical performance of polymer composites, whose
morphological structure was observed by SEM, verifying a good distribution of glass
flakes, showing difference orientation in the center and in the surface layer of test
body of composites with 10 and 20% of glass flakes. The results of DMTA Tg values
of the composites obtained from the peak of tan ä showed little reductions due to
poor interfacial adhesion between PET and recycled glass flakes. |
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