Effect Of Interface Modification On The Water Absorption And Mechanical Properties Of Acacia Nilotica Fiber–Epoxy Resin Composites
Acacia nilotica fibers were chemically modified by treatment with Sodium hydroxide, Benzoyl chloride and
phenyltriethoxysilane. The surface chemistry of the fibers was altered as a result of the chemical modification. The chemical
treatment was also found to alter the characteristic of the fiber surface topography. Composites were prepared with treated
and untreated fibers and epoxy resin by hand-lay-up technique. The treated and untreated fibers were characterized using
Scanning Electron Microscope (SEM) and Fourier transform infrared spectroscopy (FT–IR).The Tensile strength, Flexural
strength; Water absorption and thickness swellings were also evaluated. The tensile and bending stress increases
significantly with maximum value recorded on saline treated fiber composites. The treated fiber composites showed lower
water absorption and thickness swelling properties in comparison to those of untreated fiber composites.
Keywords- Acatianilotica, Fiber, Chemical treatments, Epoxy resin composites.