PHYSICOMECHANICAL AND RHEOLOGICAL PROPERTIES OF COMPOSITE POLYMER GRANULES PREPARED FROM POLYPROPYLENE AND POLYETHYLENE WASTE REINFORCED WITH MINERAL FILLERS
Authors
Tukhtaev Feruz Sadulloevich, Musoyeva Dilshoda Norqulovna, Negmatov Soyibjon Sadiqovich
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This study prepared composite polymer granules based on polypropylene (PPJ160) and high-density polyethylene (HDPE 7000F) waste modified with bentonite and calcium carbonate (CaCO₃), and comprehensively investigated their physicomechanical and rheological properties. The compositions were compounded using a twin-screw extruder, and the melt flow index (MFI), tensile strength, elongation at break, flexural strength, elastic modulus, and impact toughness were determined using standard test methods. The results showed that increasing the HDPE content improved the flowability and deformability of the composites, while slightly reducing their tensile strength. Bentonite-modified composites demonstrated higher tensile strength and elongation, whereas the addition of CaCO₃ increased flexural strength and elastic modulus. The PHBC series exhibited superior structural properties. PHBC-1, containing 70% PPJ160, 10% HDPE, 5% MAPP, 10% bentonite, and 5% CaCO₃, was recommended as the optimal composition. The obtained results confirm the possibility of producing high-performance composite granules through the integrated recycling of polymer waste with local mineral fillers.
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Authors
Tukhtaev Feruz Sadulloevich, Musoyeva Dilshoda Norqulovna, Negmatov Soyibjon Sadiqovich
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References:
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