MORPHOLOGICAL AND THERMOMECHANICAL CHARACTERIZATION OF INJECTED BIO COMPOSITES WITH POLYPROPYLENE REINFORCED BY SHORT ALFA FIBERS

Bio-composites based on natural fibers have aroused a lot of interest in various industrial fields, such as the medical field, in particular the dental field. The socioeconomic and environmental aspects have their role in the development prospects of these products. The results this work, present a step forward of the industrial application of Bio composites in polypropylene reinforced with short Alfa fibers, in particular in the field of dental appliances. We applied different surface treatments to the obtained fibers, in order to promote their adhesion with the polypropylene matrix. We have conducted an in-depth study for the definition and optimization of the industrial conditions for injection molding of the Bio composites produced. We have highlighted the impact of surface treatment and injection molding conditions, such as mold temperature and injection speed: on the morphology as well as the thermo mechanical properties of the injected parts.