The effect of alkali treatment on mechanical, morphological and thermal properties of date palm fibers (DPFs): Study of the interface of DPF–Polyurethane composite

This paper focuses on investigating the effect of alkali treatments on the bond characteristics of date palm fibers (DPFs) in a polyurethane (PU) matrix, including the bond strength, pullout energy. This kind of fiber treatment is generally used to improve the mechanical behavior of composites. Raw DPFs underwent a surface modification method by alkali treatment with different percentages of NaOH: 0 wt%, 2 wt%, 5 wt% and 10 wt%. All treatments...