SciELO - Scientific Electronic Library Online

 
vol.22 issue4Preparation and rheological characterization of nanocomposites of poly(vinyl chloride): paste with nano-clayEffect of addition of plant material (fiber of cutia chesnut) and polymer (SBS) on the properties of asphalt binder (CAP 50/70) author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Polímeros

Print version ISSN 0104-1428

Abstract

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.  http://dx.doi.org/10.1590/S0104-14282012005000053.

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.

        · abstract in Portuguese     · text in Portuguese     · pdf in Portuguese