The paper describes the manufacturing process and the characterization of the tensile mechanical properties
of treated and untreated palm dates long technical fibres. The fibres extracted from Fruit Bunch
Branch of Palm Date (FBBPD) have been subjected to alkaline treatment with different NaOH concentrations
at room temperature. The experimental results show that the chemical technical fibre treatments
provide an increase of the mechanical properties (tensile strength and Young’s modulus) under quasistatic
tensile loading. A specific treatment leads a threefold increase of the failure stress. An analysis of
stress at failure has been performed over a population of 630 samples using Weibull statistics with
two and three-parameters, together with a one-way analysis of variance (ANOVA). FBBPD technical fibres
show stiffness and strength performance comparable to the ones of agave Americana L fibres, and higher
failure at strength than okra fibres.