SciELO - Scientific Electronic Library Online

vol.15 número2Blends of poly(hydroxybutyrate) and poly (epsilon-caprolactone) obtained from melting mixtureMechanical properties of N,N,N-trimethylchitosan chloride films índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados




Links relacionados



versão impressa ISSN 0104-1428versão On-line ISSN 1678-5169


SUAREZ, João C. Miguez; COUTINHO, Fernanda M. B.  e  SYDENSTRICKER, Thais H.. Analysis of the fracture behavior of polypropylene: sawdust composites. Polímeros [online]. 2005, vol.15, n.2, pp.139-141. ISSN 1678-5169.

Natural fiber reinforced composite is an emerging area in Polymer science. The use of lignocellulosic materials in thermoplastic composites may contribute to reduce the waste of vegetal biomass. The natural fibers are biodegradable, low cost materials having density and specific properties comparable to those of conventional fiber composites. In this work composites of polypropylene (PP) plus maleated polypropylene (MAPP) filled with sawdust were prepared under fixed processing conditions (mixing temperature, mixing time and rate of rotation). The composites were fractured by tension and the fracture mechanisms were characterized by scanning electron microscopy. The SEM studies of the fractured surfaces of the composites indicate that the failure is due to fiber pull-out accompanied by tearing of the matrix; the pull-out increases with MAPP content.

Palavras-chave : Composite; polypropylene; sawdust; fracture.

        · texto em Inglês     · Inglês ( pdf )


Creative Commons License Todo o conteúdo deste periódico, exceto onde está identificado, está licenciado sob uma Licença Creative Commons