Browsing by Author "Leal Agudelo, Francisco Javier"
Now showing 1 - 1 of 1
Results Per Page
Sort Options
Item Caracterización química y térmica de fibras de bagazo de caña de azúcar funcionalizadas con anhídrido maleico mediante radiación de microondas(Universidad Santiago de Cali, 2022) Leal Agudelo, Francisco Javier; Caicedo Cano, Carolina (Directora); Gálvez Narváez, Jaime Alberto (Director)This work was carried out with the objective of functionalizing sugarcane bagasse with maleic anhydride to improve its compatibility with polymeric matrices, transforming its polar and hygroscopic nature. A Soxhlet wash was first performed on the cane bagasse fibers; After the fiber was washed, mixtures with maleic anhydride were prepared in the proportions 1:0.3, 1:0.5 and 1:1, where only the amount of maleic anhydride was changed in the reactions under microwave radiation. The functionalized fibers were characterized by infrared spectroscopy (FTIR), thermogravimetric analysis (TGA) and determination of the degree of acidity. The spectrum (FTIR) showed characteristic bands of the C-OH and C=O groups that indicated the formation of intermolecular interactions (hydrogen bonds), the formation of esters and carboxylic acids. Thermogravimetric analysis (TGA) showed a decrease in the thermal stability of the fibers, indicating restriction in intermolecular interactions and a decrease in the melting point compared to the unfunctionalized fiber. The determination of the degree of acidity in the functionalized fibers showed the formation of carboxylic acids. These results contributed to fulfill the objective of functionalizing lignocellulosic fibers under microwave radiation, confirming the formation of carboxylic acid molecules and esterifications, although no improvements in thermal properties were evidenced.