Aproveitamento de embalagens cartonadas em compósito de polietileno de baixa densidade. / Re-use of carton packages in low density polyethylene composites.

AUTOR(ES)
DATA DE PUBLICAÇÃO

2007

RESUMO

Plastics materials production has increased to 169 million tons in the world in 2003. A great part of these synthetic polymers, it means 36% in Europe are used in packaging applications. These raw materials are used for a short time and produces a great volume of residues. Even with a great development of residues management, its treatments and elimination causes several problems due to difficulty in reuse these packages as its were discarted or the state of dirtiness in which they are discarted or even by the composition multi-material of these packages. This work has as a goal the reuse of Carton Packages (CP) post-use as a reinforcement in a Low Density PolyEthylene (LDPE), to i) maximize the content of CP in the composite and ii) improve the composite visual aspect by means of color masterbatches. With aid of extrusion process, the granuleted composite was prepared. These granulated was moulded by injection to obtain test specimens for mechanical tests. Composites viscosimetric proprierties and morphology were evaluated by means of Melt Index and Scanning Electronic Microscopy (SEM) and Energy Dispersive X-Ray Spectroscopy (EDS). In the work conditions it can be postulate that the best content of CP in the composite that gives the best mechanical properties is between 20 and 25% (w/w); the use of color masterbatches for improve the composite visual aspects has no influence over mechanical properties.

ASSUNTO(S)

ldpe melt index eds mechanical properties embalagens (reaproveitamento) materiais compósitos carton package sem

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