Effect of the Recycled Rubber on the Properties of Recycled Rubber/Recycled Polypropylene Blends

This study evaluates the influence of recycled rubber (RR) with a specific particle size in the properties of blends, blended recycled polypropylene/polyethylene (RPP) and RR (RPP/RR) -- The proportions of RPP/RR employed to obtain the blends were as follows: 90/10 (PP90), 75/25 (PP75), 60/40 (PP60) and 45/55 (PP45) -- The particle size of the RR employed was 850 µm -- The properties of the blends were evaluated by rheometric, thermogravimetric (TGA), differential scanning calorimetric (DSC), scanning electronic microscopy (SEM), density, melt flow index and tensile analysis -- The maximum torque increased with the RPP content -- By DSC analysis, it was observed that the RPP exhibited two melting temperatures, the first corresponded to low density polyethylene (LDPE) and the second to polypropylene (PP) -- Furthermore, the RR affected the crystallinity of the RPP -- By using SEM and TGA analyses, it was determined that the RPP as well as RR contained fillers -- The blend densities were higher than those of RPP -- The melt flow index exhibited a trend with the amount of RR.PACS: 61.25.hk, 83.80.Va, 81.05.Lg

• Autores: Ciro, Erwin; Parra, Jorge; Zapata, Manuel; Murillo, Edwin A.
• Fecha de publicación: 2015
• Institución: Universidad EAFIT
• Repositorio: Repositorio EAFIT
• Idioma: eng
• OAI Identifier: oai:repository.eafit.edu.co:10784/7879
• Acceso en línea: http://publicaciones.eafit.edu.co/index.php/ingciencia/article/view/2638; http://hdl.handle.net/10784/7879
• Palabra clave: 61.25.hk; 83.80.Va; 81.05.Lg; 61.25.hk; 83.80.Va; 81.05.Lg; Compósitos; Caucho reciclado; Polipropileno reciclado; POLIPROPILENO; CAUCHO; TERMOGRAVIMETRIA; CALORIMETRÍA; MICROSCOPIA ELECTRÓNICA; Polypropylene; Rubber; Thermogravimetry; Calorimeters and calorimetry; Electron microscopy
• License: Copyright (c) 2015 Ingeniería y Ciencia | ing.cienc.