Nor Amira, Othman and Nur Anis Alisya, Kamarol Zani and Nur Amalina, Ramli and Nurul Aini, Mohd Azman and Fatmawati, Adam and Noor Fitrah, Abu Bakar and Rehan, Mohammad (2024) A mechanistic study of the synthesis of sustainable carrageenan-polylactic acid biocomposite. Arabian Journal for Science and Engineering, 49 (6). 8115 -8129. ISSN 2193-567X (Print); 2191-4281 (Online). (Published)
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Abstract
Environmental friendly biocomposites are urgently needed to mitigate the pollution caused by huge consumption of petroleum-based polymers. Renewable carrageenan and polylactic acid (PLA) natural polymers have the potential to replace petroleum-origin polymers. Nevertheless, the carrageenan and PLA themselves inherit poor tensile strength, hydrophobicity and stability. The aim of this study is to underpin the mechanism of synthesis of carrageenan-PLA biocomposite using van’t Hoff plot, 1HNMR and density functional theorem simulation. Strong hydrogen bonding was found at 1.88 Å between O atom (carrageenan) and H atom (PLA) and was validated in 1HNMR shifting at 5.3 ppm corresponding to –OH group from PLA. The interaction established in the biocomposite mixed at 50 °C leads to a stronger tensile strength of 75.37 MPa, higher hydrophobicity and thermal stability with highest activation energy of 45.39 kJ/mol. The biocomposite produced from renewable carrageenan-PLA material would be a future replacement for nondegradable plastic as a food packaging material.
| Item Type: | Article |
|---|---|
| Additional Information: | Indexed by Scopus |
| Uncontrolled Keywords: | Activation energy; Bioplastic; Interaction energy; Tensile strength; Water permeability |
| Subjects: | T Technology > TP Chemical technology |
| Faculty/Division: | Institute of Postgraduate Studies Faculty of Chemical and Process Engineering Technology Centre for Research in Advanced Fluid & Processes (Fluid Centre) |
| Depositing User: | Mrs Norsaini Abdul Samat |
| Date Deposited: | 24 Sep 2024 06:53 |
| Last Modified: | 24 Sep 2024 06:53 |
| URI: | http://umpir.ump.edu.my/id/eprint/42657 |
| Download Statistic: | View Download Statistics |
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