OICC Press International Journal of Industrial Chemistry 2228-5547 9 4 2023 11 17 Improvement of the interface bonding between date palm fibers and polymeric matrices using alkali-silane treatments https://doi.org/10.1007/s40090-018-0162-3 EN Abdessamad Oushabi Laboratory of Physico-Chemistry of Applied Materials (LPCMA), University of Hassan II of Casablanca, Faculty of Sciences Ben M’sik, Driss El Harti, B.P 7955, Sidi Othmane, Casablanca, Morocco Fahd Oudrhiri Hassani National School of Applied Sciences (ENSA), Safi, Morocco Younes Abboud Laboratory of Physico-Chemistry of Applied Materials (LPCMA), University of Hassan II of Casablanca, Faculty of Sciences Ben M’sik, Driss El Harti, B.P 7955, Sidi Othmane, Casablanca, Morocco Said Sair Laboratory of Physico-Chemistry of Applied Materials (LPCMA), University of Hassan II of Casablanca, Faculty of Sciences Ben M’sik, Driss El Harti, B.P 7955, Sidi Othmane, Casablanca, Morocco Omar Tanane Laboratory of Physico-Chemistry of Applied Materials (LPCMA), University of Hassan II of Casablanca, Faculty of Sciences Ben M’sik, Driss El Harti, B.P 7955, Sidi Othmane, Casablanca, Morocco Abdeslam El Bouari Laboratory of Physico-Chemistry of Applied Materials (LPCMA), University of Hassan II of Casablanca, Faculty of Sciences Ben M’sik, Driss El Harti, B.P 7955, Sidi Othmane, Casablanca, Morocco Journal Article 2023 11 17 In this paper, the effect of chemical treatments on date palm fibers (DPFs) properties was studied; DPFs were first treated with a 5 wt% NaOH aqueous solution for 1 h and then modified using two types of silane coupling agents (3-Mercaptopropyltrimethoxysilane and 3-Aminopropyltrimethoxysilane) with various concentrations (0.1, 0.5, 1 and 2 wt%) to improve the interfacial properties of DPFs with polymeric matrices. SEM observations showed the formation of silane layers on the alkalized surface of DPFs. The Fourier-transform infrared (FTIR) results showed that the salinization was successfully performed by forming covalent Si–O–C bonds between DPF and silane coupling agent. The pull-out behavior of treated fibers was also investigated using two matrices; polyurethane (PU) and epoxy. The obtained results showed that the treatments have successfully improved the interfacial bond characteristics of DPF-PU and DPF-Epoxy systems.