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- Title
A Mechanistic Study of the Synthesis of Sustainable Carrageenan-Polylactic Acid Biocomposite.
- Authors
Othman, Nor Amira; Kamarol Zani, Nur Anis Alisya; Ramli, Nur Amalina; Mohd Azman, Nurul Aini; Adam, Fatmawati; Abu Bakar, Noor Fitrah; Rehan, Mohammad
- 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.
- Subjects
POLYLACTIC acid; CARRAGEENANS; BIOPOLYMERS; TENSILE strength; PLASTICS in packaging; PACKAGING materials; ACTIVATION energy
- Publication
Arabian Journal for Science & Engineering (Springer Science & Business Media B.V. ), 2024, Vol 49, Issue 6, p8115
- ISSN
2193-567X
- Publication type
Article
- DOI
10.1007/s13369-024-08727-x