Print version ISSN 0104-1428
PIRES, Eduardo N. et al. The influence of alkaline treatment on jute fiber- reinforced epoxy resin composite. Polímeros [online]. 2012, vol.22, n.4, pp.339-344. Epub Aug 28, 2012. ISSN 0104-1428.
This study was aimed at evaluating the efficiency of chemical treatment on the dynamic mechanical and mechanical properties of composite materials with jute fibers and epoxy matrix resin. The surfaces of the jute ﬁbers were modified by contact with sodium hydroxide solutions, and characterized through scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR) and tensile strength testing. The FTIR and SEM analysis evidenced that the alkaline treatment promoted removal of the hemicellulose and modification in the morphology of the jute fibers, respectively. Polymeric composites with untreated and treated jute fiber were prepared through hand lay-up process followed by compression molding. The treated jute fiber composites displayed higher mechanical properties and storage modulus values than the epoxy resin and untreated fiber composites. The scanning electron micrographs (SEM) revealed that treated jute fiber composites have less voids and pull-out, suggesting a better adhesion with the polymeric matrix than untreated fiber composites.
Keywords : Polymeric composites; epoxy resin; jute fibers; adhesion fiber-matrix; chemical treatment.