The Study of Pulp-Polypropylene biocomposites Properties produced from non-extracted and pre-extracted Bagasse with hot water

In this study, the physical and mechanical properties of polypropylene composites reinforced with alkaline sulfite-anthraquinone, soda-anthraquinone and monoethanolamine-anthraquinone pulping and chemical mechanical pulping produced from bagasse and pre-extracted bagasse with hot water by using a coupling agent MAPP (3%) were studied. Findings from pretreated and unpretreated bagasse composites were compared. The ratio of the polypropylene and reinforcement material (pulp) was considered at 50/ 50. The results showed that the pulping process has a significant effect on all physical and mechanical properties of produced composites. In general, composites that containing chemical pulps have greater dimensional stability and mechanical strengths but lower water absorption than that of mechanical pulp. Composites containing treated fibers with alkali sulfite-anthraquinone and soda pulp had the highest mechanical properties and dimensional stability. Composites made from fibers which their hemicelluloses were extracted and then were treated with chemical pulping processes had the highest mechanical strengths and dimensional stability among all of samples. The highest mechanical strengths and dimensional composites that reinforced with treated fibers compared with control samples containing untreated bagasse fibers are more resistant demonstrated. In general, the results showed the superior physical and mechanical characteristics for Pulp - Plastic composites compared with flour plastic composites.