Rheological, Morphological and Mechanical Characterization of Recycled Poly (Ethylene Terephthalate) Blends and Composites

• Autor(a) principal: Pereira,Laurenice Martins
• Data de Publicação: 2017
• Outros Autores: Corrêa,Ana Carolina, Souza Filho,Men de sá Moreira de, Rosa,Morsyleide de Freitas, Ito,Edson Noriyuki
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Materials research (São Carlos. Online)
• Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392017000300791
• topic: Cotton linter; Poly (ethylene methyl acrylate); Poly (ethylene terephthalate); Polymer blend; Polymer composite

This study evaluated the effect of adding poly (ethylene methyl acrylate) (EMA) and cotton linter (CL) on the properties of recycled poly (ethylene terephthalate) (PETrec). For this, PETrec/EMA blend and PETrec/EMA/CL composite were developed. In order to improve the interfacial adhesion and the properties of these materials, ethylene/methyl acrylate/glycidyl methacrylate terpolymer (EMA-GMA) and polyethylene-grafted maleic anhydride (PE-g-MAH) were added. The rheological results showed that the addition of EMA increased and the addition of 1 wt% of CL reduced the viscosity. The morphological analysis of the non-compatibilized blend and composite showed poor interfacial adhesion. Polymer blends with 2 and 6 wt% of EMA had better mechanical properties, since these formulations have the smallest average particle diameter of 0.58 and 1.00 µm, respectively. The mechanical testing of composites showed a material with higher maximum strength and elasticity modulus than polymer blend when analyzed at the same EMA phase concentration. The use of EMA-GMA was effective in reducing the size of particles of the EMA in the blend.