Improvement of Mechanical, Thermal, and Morphological Properties of Organo-Precipitated Calcium Carbonate Filled LLDPE/Cyclic Natural Rubber Composites

Ahmad Hafizullah Ritonga; Novesar Jamarun; Syukri Arief; Hermansyah Aziz; Denny Akbar Tanjung; Boy Isfa

doi:10.22146/ijc.68888

Improvement of Mechanical, Thermal, and Morphological Properties of Organo-Precipitated Calcium Carbonate Filled LLDPE/Cyclic Natural Rubber Composites

https://doi.org/10.22146/ijc.68888

Ahmad Hafizullah Ritonga⁽¹⁾, Novesar Jamarun^(2*), Syukri Arief⁽³⁾, Hermansyah Aziz⁽⁴⁾, Denny Akbar Tanjung⁽⁵⁾, Boy Isfa⁽⁶⁾

(1) Department of Chemistry, University of Andalas, Limau Manis, Padang 25163, West Sumatera, Indonesia; Department of Chemistry, University of Sari Mutiara Indonesia, Medan 20123, North Sumatera, Indonesia
(2) Department of Chemistry, University of Andalas, Limau Manis, Padang 25163, West Sumatera, Indonesia
(3) Department of Chemistry, University of Andalas, Limau Manis, Padang 25163, West Sumatera, Indonesia
(4) Department of Chemistry, University of Andalas, Limau Manis, Padang 25163, West Sumatera, Indonesia
(5) Department of Chemistry, University of Andalas, Limau Manis, Padang 25163, West Sumatera, Indonesia; Department of Agrotechnology, University of Medan Area, Medan 20223, North Sumatera, Indonesia
(6) Department of Chemistry, University of Andalas, Limau Manis, Padang 25163, West Sumatera, Indonesia
(*) Corresponding Author

Abstract

This study investigates the improvement of the mechanical, thermal, and morphological properties of linear low-density polyethylene (LLDPE)/cyclic natural rubber (CNR) after the addition of organo-precipitated calcium carbonate (O-PCC). The impact on the properties of the LLDPE/CNR/LLDPE-g-OA/O-PCC composites was investigated by a series of empirical experiments. First, the polymer composite was blended in the molten state using an internal mixer with a heating temperature of 160 °C and a rotation speed of 100 rpm. The LLDPE was placed in a chamber of internal mixer until melted, followed by CNR, LLDPE-g-OA, and O-PCC. The polymer composites with an O-PCC concentration of 5% obtained the optimal mechanical properties compared to other variations, with a tensile strength of 17.17 MPa and Young's modulus of 252.68 MPa. The presence of O-PCC resulted in better thermal stability and a change in the melting point temperature of 124 °C. The FTIR spectra of the polymer composite showed the specific characteristics of O-PCC at 872.1 cm^–1. The morphology of the polymer composite indicates that the O-PCC is evenly dispersed in the polymer composite.

Keywords

O-PCC; LLDPE; CNR; LLDPE-g-OA; filler

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DOI: https://doi.org/10.22146/ijc.68888