The effect of coated calcium carbonate using stearic acid on the recovered carbon black masterbatch in low-density polyethylene composites

Abstract This research focuses on recycling rubber tire waste through pyrolysis to produce recovered carbon black (rCB). The rCB is combined with recycled low-density polyethylene (rLDPE), calcium carbonate (CaCO 3 ), fatty acid, metallic stearate, and (PE) wax create an masterbatch for household packaging. Surface modification of CaCO particles using stearic acid improves the compatibility LDPE. study investigates mechanical properties, morphology, melt flow index (MFI), X-ray diffraction, thermogravimetric analysis in three systems: uncoated, coated, a hybrid combination coated uncoated LDPE/rCB composites. system demonstrates higher properties improved between All systems exhibit enhanced thermal stability MFI compared virgin LDPE, showing most significant improvement. showcases potential composites packaging, displaying optimum performance across various characteristics.