Agro-industrial waste represent an important source of natural polymers for bioplastic obtention, intended for the replacement of materials derived from oil. Polysaccharides, as pectin from orange peel has the potential to be used as raw material for plastic industry, besides an additional value could be obtained from the orange peel that is a waste. In this work, we assessed mechanical and thermal properties of a film obtained from orange peel. Scanning electron microscopy showed a heterogeneous surface with grooves, owed to fibrous materials residues from orange peel. Elastic modulus stayed in the range 7.7–29.9 MPa, according to plasticizer content. By thermogravimetric analysis, we identified up to five events, according to film composition. These results indicate that pectin obtained possess suitable properties to be used as raw material for bioplastic fabrication.
Objective: To obtain cellulose from oil palm agroindustrial waste that meets standard physicochemical characteristics to produce value-added products. Design/methodology/approach: Bagasse fibers from the palm agroindustry were used to obtain cellulose, by means of the acid – alkaline hydrolysis methodology. The samples obtained in each stage and the cellulose obtained were characterized by the Fourier Transform Infrared Spectroscopy (FTIR) technique and thermogravimetric analysis (TGA). Results: The final characterized product presented a band corresponding to 1370 cm1 which is a characteristic value of cellulose. The peak at 1731 cm-1 is related to C=O bonds of unconjugated ketones present in hemicellulose. A major thermal event for treated fiber near 355 °C and the high residual mass indicate a good chemical treatment for hemicellulose and lignin elimination. Study limitations/implications: A fiber yield of 39.3% cellulose was obtained during the process from oil palm bagasse. Findings/conclusions: Obtaining cellulose from a highly polluting residue such as palm bagasse and with high production figures in our state, makes it a potential for use to generate biopolymers in combination with natural polysaccharides, providing sustainable benefits and economic impact and promoting sustainable development by replacing conventional fossil plastics, in addition to obtaining value-added products for the same agribusiness and in sectors such as the food industry.
En este trabajo, se sintetizó por sol-gel a temperatura ambiente (25°C) un recubrimiento híbrido de SiO2–PMMA con propiedades de barrera a contaminantes atmosféricos. Los precursores inorgánicos del SiO2 utilizados fueron TEOS:Etanol:Agua 0.1:0.4;1.2 en relación molar. Como precursor orgánico 100 ml de monómero MMA con 0.4 g de BPO como catalizador de la polimerización por radicales libres para obtener el polímero PMMA. Se logró la obtención de películas homogéneas aplicadas por el método de aspersión sobre sustratos metálicos de acero AISI 1036. El espesor de la capa obtenida fue de 30 µm como película seca, sin ningún tratamiento térmico de secado, los sustratos fueron preparados con limpieza química bajo la norma ASTM G1. Estos recubrimientos híbridos de SiO2–PMMA, están bien adheridos al sustrato metálico con grado de adherencia 5B de acuerdo a la norma ASTM D3359, y tienen alta transparencia en el rango del visible con 95%T y capacidad anticorrosiva de -472.44 mV. Esta última, fue evaluada por la técnica electroquímica de Curvas de Polarización y OCP con ambas técnicas se detectó que no existe un intercambio iónico y que el recubrimiento hibrido de SiO2–PMMA genera la protección entre el acero AISI 1036 y la solución de electrolitos.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.