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

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 ), fatty acid, metallic stearate, and polyethylene (PE) wax to create an rCB masterbatch for hou...

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Bibliographic Details
Published in:	e-Polymers Vol. 23; no. 1; pp. 1155 - 67
Main Authors:	Leow, Voon Jou, Teh, Pei Leng, Yeoh, Cheow Keat, Abdul Rahim, Nor Azura, Wong, Wee Chun, Voon, Chun Hong, Mohamed Rasidi, Mohamad Syahmie, Lim, Bee Ying
Format:	Journal Article
Language:	English
Published:	Berlin De Gruyter 06-07-2023 Walter de Gruyter GmbH
Subjects:	Calcium carbonate Carbon black Chemical engineering Coating effects Compatibility Composite materials Density Fatty acids Injection molding Low density polyethylenes low-density polyethylene Materials research Materials science Mechanical properties Melt flow index Morphology Packaging Polyethylene Polymers Pyrolysis rCB masterbatch recovered carbon black Stearic acid stearic acid-coated calcium carbonate Thermal stability Thermogravimetric analysis
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Summary:	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 ), fatty acid, metallic stearate, and polyethylene (PE) wax to create an rCB masterbatch for household packaging. Surface modification of CaCO particles using stearic acid improves the compatibility with LDPE. The study investigates mechanical properties, morphology, melt flow index (MFI), X-ray diffraction, and thermogravimetric analysis in three systems: uncoated, coated, and a hybrid combination of coated and uncoated CaCO in LDPE/rCB masterbatch composites. The coated system demonstrates higher mechanical properties and improved compatibility between CaCO and LDPE. All three systems exhibit enhanced thermal stability and MFI compared to virgin LDPE, with the coated system showing the most significant improvement. The study showcases the potential of LDPE/rCB masterbatch composites for household packaging, with the coated system displaying the optimum performance across various characteristics.
ISSN:	1618-7229 2197-4586 1618-7229
DOI:	10.1515/epoly-2023-0025