Improvement of the interface bonding between date palm fibers and polymeric matrices using alkali-silane treatments
Published in Issue 2023-11-17
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Abstract
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 SiâOâC 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.
Keywords
- Alkali,
- Date palm fibers,
- Epoxy,
- Interfacial shear stress,
- Polyurethane,
- Pull out test,
- Silane treatment
https://doi.org/10.1007/s40090-018-0162-3