Influence of UV Radiation on the Physical-chemical and Mechanical Properties of Banana Fiber

Surface treatment in banana fibers (BF) can result in significant surface structure changes that allow for the production of composites with higher mechanical strength. As described above, the objective of this study was to clarify the physicochemical and mechanical properties of the inner sheath and outer sheath banana fibers of Prata type when irradiated with UV (λmax = 400 nm) between 7 (UV 7) and 15 (UV 15) It is to evaluate the characteristic property. )Day. Characterization of the structure and microstructure of non - fibrous and irradiated fibers by FT - IR spectroscopy and scanning electron microscopy (SEM), which showed the effect of UV irradiation on the surface and chemical structure of BF. Ea involved in thermal degradation process of InNatura fiber (188.2 kJ · mol -1) was obtained by differential thermal analysis (DTA / TG). In comparison with the tensile strength (69.99 MPa) and the modulus of elasticity (87.40 MPa) of the InNatura fiber, the results obtained from the mechanical characterization clearly showed the tensile strength (89.77 MPa) and the elastic modulus (238.94 MPa) It was shown. It improved. Statistical analysis using a two-way analysis of variance showed that there is no difference between the mechanical properties of BF from inside to outside. Ultraviolet radiation has been proven to be a clean blast furnace surface treatment which improves the mechanical properties of composite materials based on these fibers.

Abstract: Increasing use of fiber reinforced polyester composites in outdoor environments raises questions about environmental durability of these materials, particularly those related to ultraviolet (UV) exposure. In this study, the effect of ultraviolet irradiation on the mechanical properties of glass / polyester composites was investigated. The study focused on the nature of the resin, since photolysis is a surface mechanism, limited to degradation of the mechanical properties of the resin (fibers do not deteriorate). For this purpose, test samples consisting of polyester resin were prepared and processed in the UV chamber by accelerated testing. Three kinds of samples were manufactured. Tensile test samples were prepared according to the ASTM D 638 standard with a nominal thickness of 1 mm. In addition, Arcan samples for shear testing and ASTM D 3410 for compression testing were made. In addition, significant changes in the shear modulus and strength of the polyester are taken into account.

Surface treatment in banana fibers (BF) can result in significant surface structure changes that allow for the production of composites with higher mechanical strength. As described above, the objective of this study was to clarify the physicochemical and mechanical properties of the inner sheath and outer sheath banana fibers of Prata type when irradiated with UV (λmax = 400 nm) between 7 (UV 7) and 15 (UV 15) It is to evaluate the characteristic property. )Day. Characterization of the structure and microstructure of non - fibrous and irradiated fibers by FT - IR spectroscopy and scanning electron microscopy (SEM), which showed the effect of UV irradiation on the surface and chemical structure of BF. Ea involved in thermal degradation process of InNatura fiber (188.2 kJ · mol -1) was obtained by differential thermal analysis (DTA / TG). Statistical analysis using a two-way analysis of variance showed that there was no difference in the mechanical properties of BF from the inner sheath to the outer sheath