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Recycled polyester filled with eggshells waste-based nano CaCO: thermo-mechanical and flame-retardant features
Substitution of primary resources by solid waste and natural alternatives is being targeted worldwide. In this regard, this work aims to prepare a new environmentally friendly polymer nanocomposite based on a recycled polyester matrix and waste CaCO 3 . The novel aspect is filling the environmentall...
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| Published in: | New journal of chemistry 2023-03, Vol.47 (10), p.4999-5010 |
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| Main Author: | |
| Format: | Article |
| Language: | |
| Online Access: | Get full text |
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| Summary: | Substitution of primary resources by solid waste and natural alternatives is being targeted worldwide. In this regard, this work aims to prepare a new environmentally friendly polymer nanocomposite based on a recycled polyester matrix and waste CaCO
3
. The novel aspect is filling the environmentally friendly polyester, obtained from natural biomass and natural oleic acid (BM-PES), with different concentrations of eggshell-waste-based calcium carbonate (ES-CaCO
3
) nanofiller, for the first time. ES-CaCO
3
, ∼ 80 nm, was extracted by milling and calcination of solid eggshell waste, then added to the BM-PES matrix at concentrations of 3%, 5%, 7% and 10% to give the ES-CaCO
3
/BM-PES nanocomposites. The polymerized composites exhibited enhanced properties unlike those of the blank matrix. The microstructural investigations confirmed the successful preparation of the crystalline CaCO
3
nanofiller. The obtained nanocomposites have improved thermal properties, owing to the increased thermal decomposition temperatures. The 7% and 10% ES-CaCO
3
/BM-PES nanocomposites achieved higher mechanical performance, where hardness and scratch resistance improved by 12.5% and 41.7%, respectively. The cone calorimetric parameters indicated the effective flame retardancy of the ES-CaCO
3
nanofiller, including the decreased peak heat release rate, specific extinction area, total smoke parameter and mass loss rate, as well the longer time to ignition, compared with the blank BM-PES matrix. The ES-CaCO
3
nanofiller protects the natural BM-PES polymer from thermal deformation, mechanical failure and ignition. The characterization confirmed the thermo-mechanical and fire-retardant properties of ES-CaCO
3
/BM-PES nanocomposites with the successful exploitation of eggshell solid waste and recycled polyester as an environmentally friendly feature.
Improved environmental-friendly fire-retardant nanocomposite. |
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| ISSN: | 1144-0546 1369-9261 |
| DOI: | 10.1039/d3nj00538k |