The aims of this research are to investigate the effect of different surface treatmentmethods on the different properties of date palm
fiber (DPF) compared to raw DPF fibers such as surface morphology, density, thermal stability, and tensile properties. The first
surface treatment is called surface hand cleaning which can be carried out by cleaning the fibers by soft sand cloth; the second one
is the same as the first one after DPF heat treatment in the furnace at 100∘C for 1.5 h and the third one is by chemical treatment with
1% NaOH at 100∘C for 1 h.The results showed that the mechanical performance of DPF was enhanced by the different treatments
and the chemical treatment has pronounced effect on the behavior of DPF. Raw fibers showed the highest variability and presented
the lowest value ofWeibull modulus, whereas the fibers showed less variability by carrying out the different treatments. Moreover,
using soda treatment cleans the fiber surface which causes fibrillation and therefore the tensile strength of the fibers increases.