Eco-friendly bioplastic produced from orange peel and its thermodynamic and kinetic analysis | ||||
| Egyptian Journal of Chemistry | ||||
| Articles in Press, Accepted Manuscript, Available Online from 25 June 2025 | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ejchem.2025.373200.11549 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
Fatima A AL-Qadri  1; Fatima Alqadri2; samiyah salaym3; Najoud AlSayari1; Sarah Al Nahdi2; Nada AlSayari2; SAHAR ALQAHTANI2; ALYA ALBRIKI1; Aisha Al-Buraiki1
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| 1Sharora Science and Art faculty, Najran University, | ||||
| 2Sharora Science and Art faculty ,Najran University, | ||||
| 3KING Abdu Aziz street | ||||
| Abstract | ||||
| The study's goal is to manufacture bioplastic out of starch derived from biodegradable and environmentally favorable plants like orange peel. Water, mashed peels, gelatin, glycerin, coconut oil, food coloring, and cotton were used to make the bioplastic after it was dried. The findings reveal that bioplastic is biodegradable, with an average weight loss of 99.9%. It was mildly soluble in ethanol, insoluble in water, and fully soluble in HCl. The swelling test showed no change when immersed in chloroform, but only a modest alteration in water. It degrades more quickly as temperatures rise. The activation energy was 60.36. Gibbs energy had positive ΔG values of 26.796, 83.874, and 153.609 J mol⁻¹, suggesting non-spontaneous behavior; a negative ΔH value of -60 J mol⁻¹, showing exothermic nature; and a positive ΔS value, indicating less organized structure. The kinetic reaction rate coefficient (kr) for plastic biodegradation rose as the starch concentration increased, resulting in greater biodegradation, decomposition, formation of a microcrystalline complex, and stabilization. The manufactured bioplastic possesses features such as minimum or no swelling and is insoluble in water, making it commercially feasible and a renewable resource. Orange peel will be the best material for bioplastic manufacture. | ||||
| Keywords | ||||
| orange; bioplastic; biodegradation; kinetic; thermodynamic | ||||
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