Distribuição estatística de Weibull aplicada a compósitos de polietileno reciclado/fibra vegetal de sisal

Abstract

The development of renewable and biodegradable materials is a trend that seeks to reduce costs and environmentalimpacts. In this context, the present work aims at the development of new materials, made with vegetable fibers and that can replace others thatare derived from petroleum. Plant fibers were used and duly modified by mercerization and acetylation in order to produce materials with chemical compatibility. In this work, recycled polyethylene composites reinforced with sisal fibers were obtained.We used the statistical tool called the Weibull distribution, to predict the mechanical failures of the studied systems. It was possible to observe that the resulting composite had a relative improvement in its mechanical properties which could be proved by the tensile tests.The Weibull distribution was a tool that produced results as expected,improving the mechanical properties of the material.