Polyurethane composites with bagasse of sugar cane (BSC) at different proportions: 5, 10 and 20 mass/mass% were prepared by
melt mixing method. The thermal behavior of these composites were studied by thermogravimetry (TG/DTG). The influence of fiber
concentration on the kinetic parameters of the composites was studied and a better interaction was suggested between PU/BSC
with 5mass/mass% of fiber. Scanning electron microscopy was carried out to investigate surface morphology.