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Silica/coconut shell charcoal/high-density polyethylene/linear low-density polyethylene composites

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Abstract

High-density polyethylene (HDPE)/linear low-density polyethylene (LLDPE) blends have been designed by varying the HDPE:LLDPE ratio. The ratio of 70:30 showed the best combination of tensile properties (19.53 MPa), melt flow index (MFI) (1.75 g/10 min) and hardness properties (Shore D 46.5), and its tensile strength and hardness was greater than those of plain LLDPE, whereas its MFI was greater than that of a plain HDPE. Hence, with the same composition, the composites were made by addition of silica with a ratio of 10–40%. Incorporation of silica acts as a reinforcement into the system and improves the structural rigidity and 30% incorporation showed the best performance in terms of tensile (23.69 MPa), and hardness (Shore D 48) but slightly less MFI (0.85 g/10 min) of the composites. Incorporating coconut shell charcoal (CSC) not only improves the system’s performance but also utilizes its waste and properties are measured as tensile strength (22.33 MPa), maintaining the hardness properties and slight reduction in MFI (0.77 g/10 min). All blends and composites were processed through extrusion and palletization followed by compression molding. Plain silica, CSC as well as the selected blends and composites were evaluated by FTIR, XRD, and SEM analyses. Hence, the synergistic effect of silica and CSC in the HDPE-LLDPE blend is studied and such a composite can be suitable in automotive applications.

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Authors and Affiliations

  1. Department of Polymer and Surface Engineering, Institute of Chemical Technology, Mumbai, 400019, India

    Suraj Bhanushali, Darbha Sai Srivats, Princekumar Mishra & Aarti P. More

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  1. Suraj Bhanushali
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  2. Darbha Sai Srivats
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  3. Princekumar Mishra
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Correspondence to Aarti P. More.

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Bhanushali, S., Srivats, D.S., Mishra, P. et al. Silica/coconut shell charcoal/high-density polyethylene/linear low-density polyethylene composites. Iran Polym J 32, 571–584 (2023). https://doi.org/10.1007/s13726-023-01146-z

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  • DOI: https://doi.org/10.1007/s13726-023-01146-z

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