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Effects of Light Radiation Absoption on the Resistance of Sweet Potato Starch-Based Bioplastics

Journal of Materials Science and Chemical Engineering 2022年第2期10卷 44-52页

作者： Aristide Herlyn Wilfrid Nakavoua emmanuelle surya ouenadio Pascale Ursula Nkoua-Ouassamo Vincent Verney Laboratory of Natural Substances Chemistry (IRSEN) Brazzaville Congo Laboratory for The Valorisation of Agri-Resources Ecole Normale Superieure Politechnique (ENSP) Marien Ngouabi University Brazzaville Congo UMR 6296 Team Design of Polymers and Macromolecules Scientist Set Cézeaux Institute of Chemistry of Clermont-Ferrand (ICCF) Clermont-Ferrand French

The strength of starch-based bioplastics is a challenge, we tried to overcome this limitation by using electromagnetic radiation in the visible range. Synthetically obtained retrograde bioplastics were subjected to radiation from an Edison-type incandescent lamp. A cross-linked network is obtained within the bioplastic matrix considerably attenuating the usual hygroscopicity of starch and increasing the ability to resist rupture. After this positive behavior, the bioplastics were colored in order to optimize the action of light radiation. The results show a stronger and more compact bioplastic. The green-colored bioplastics show the best performance in the optimization of the resistance.

关键词： Bioplastics Starch Sweet Potato Radiation and Light Stress

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Impact of Photonic Action on the Hygroscopy of Sweet Potato Starch-Based Bioplastics from Congo

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Open Journal of Applied Sciences 2022年第1期12卷 42-50页

作者： Aristide H. W. Nakavoua Anicet F. Binaki emmanuelle S. ouenadio Raymond G. Elenga Vincent Verney Laboratory of Natural Substances Chemistry (IRSEN) Brazzaville Congo Equipe Pluridisciplinaire en Alimentation et Nutrition P&#244le d’Excellence Régionale en Alimentation et Nutrition BP 389 Faculté de Sciences et Techniques Brazzaville Congo Laboratory for the Valorisation of Agri-Resources Ecole Normale Superieure Politechnique (ENSP) Marien Ngouabi Univer-sity Brazzaville Congo Laboratory for materials and Energy Faculty of Science and Technology (FAST) Marien Ngouabi University Brazzaville Congo Institute of Chemistry of Clermont-Ferrand (ICCF) UMR 6296 Team Design of Polymers and Macromolecules Scientist Set Cézeaux24 Avenue des Landais Clermont-Ferrand France

The work carried out here opens another perspective in the valorization of sweet potatoes produced in Congo Brazzaville other than those proposed by BOULA and all. We have shown in this work that the hydrophilic property of starch which limits the production of starch-based bioplastics can be inhibited by using the effects of photonic incandescence. Indeed, light significantly impacts the bioplastic matrix causing a decrease of the sites likely to bind water molecules. However, it would be desirable to apply rheology for a better follow-up of this cross-linking phenomenon. The synthesized retrograde bioplastic having undergone a photonic stress shows better physical properties to be used as packaging and thus to answer the environmental protection.

关键词： Aging Bioplastic Ipomea batata Photonic Stress

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