EVALUATION OF BUTIRI FIBERS ELASTICITY MODULUS W1TH DIFFERENT DIAMETERS BY WEIBULL ANALYSIS

摘要

Since environmental issues are becoming more and more important Worldwide, Nowadays Natural fibers are been used to substitute the synthetic ones. Although Buriti fiber is an important natural fiber and its mechanical properties surpass in various aspects some other lignocelluloses fibers, such few studies have been conducted with the fiber obtained from buriti palm tree. In order to better evaluate the mechanical properties and possible applications, this paper aims to improve the elastic modulus of the buriti fiber by Weibull statistics, by evaluating their mechanicals properties and possible applications. The fibers were divided in diameter intervais and the tensile strength and elastic modulus were measured in each range. The fractured surface was examined using scanning electron microscopy. The results, interpreted by the Weibull statistical method, showed a correlation between the fiber elastic modulus and its diameter. An analysis by scanning electron microscopy indicated the possible reasons for this correlation.