The global pulp and paper industry generated 110 million tons of solid waste in 2017. In Consequence, collaborative efforts address this urgent challenge by championing circular economy principles. These initiatives focus on redirecting pulp and paper waste away from landfills and transforming it into valuable resources.
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Specifically, ongoing projects seek to harness waste cellulosic fibers from pulp and paper industries to manufacture FRPCs for industrial applications. This innovative approach involves utilizing recycled waste cellulosic fibers (RWCF), in addition to polypropylene, and a coupling agent known as Maleic anhydride grafted polypropylene (MAPP).
Researchers are investigating the impact of several crucial material and process factors on the mechanical and thermal properties of FRPCs. These factors include the MAPP content, screw speed (RPM), fiber size, and fiber content loading. Through meticulous analysis and experimentation, they aim to optimize the performance and sustainability of FRPCs.
Scientists characterized the polymer composites’ mechanical properties following the ASTM D638 standard, employing a strain rate of 10 mm/min.
Engineers tested the thermal properties from the polymer composites by subjecting the samples to heat-cool-heat cycles under nitrogen.
Overall, the composite made with 20 wt.% non-sieved fiber and 3 wt.% MAPP at 300 RPM achieved the highest tensile strength, measuring approximately 42 MPa. It represents a 30% improvement, accompanied by a 47% increase in modulus.
In summary, the studies conducted reveal the significance of the factors assessed. The addition of fibers enhances strength and modulus, peaking at a 20% fiber loading. Crystallinity increases with fiber introduction but declines beyond 20%. These findings provide a solid foundation for future research and development of more efficient and sustainable FRPCs.
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