Effect of TiO<sub>2</sub> Nanoparticles and Extrusion Process on the Physicochemical Properties of Biodegradable and Active Cassava Starch Nanocomposites
Biodegradable polymers have been strongly recognized as an alternative to replace traditional petrochemical plastics, which have become a global problem due to their long persistence in the environment. In this work, the effect of the addition of titanium dioxide nanoparticles (TiO<sub>2</s...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-01-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/15/3/535 |
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| author | Carolina Iacovone Federico Yulita Daniel Cerini Daniel Peña Roberto Candal Silvia Goyanes Lía I. Pietrasanta Lucas Guz Lucía Famá |
| author_facet | Carolina Iacovone Federico Yulita Daniel Cerini Daniel Peña Roberto Candal Silvia Goyanes Lía I. Pietrasanta Lucas Guz Lucía Famá |
| author_sort | Carolina Iacovone |
| collection | DOAJ |
| description | Biodegradable polymers have been strongly recognized as an alternative to replace traditional petrochemical plastics, which have become a global problem due to their long persistence in the environment. In this work, the effect of the addition of titanium dioxide nanoparticles (TiO<sub>2</sub>NP) on the morphology, physicochemical properties and biodegradation under industrial composting conditions of cassava starch-based nanocomposites obtained by extrusion at different screw speeds (80 and 120 rpm) were investigated. Films performed at 120 rpm (S<sub>120</sub> and S<sub>120</sub>-TiO<sub>2</sub>NP) showed completely processed starch and homogeneously distributed nanoparticles, leading to much more flexible nanocomposites than those obtained at 80 rpm. The incorporation of TiO<sub>2</sub>NP led to an increase in storage modulus of all films and, in the case of S<sub>120</sub>-TiO<sub>2</sub>NP, to higher strain at break values. From the Kohlrausch–Williams–Watts theoretical model (KWW), an increase in the relaxation time of the nanocomposites was observed due to a decrease in the number of polymer chains involved in the relaxation process. Additionally, S<sub>120</sub>-TiO<sub>2</sub>NP showed effective protection against UV light, greater hydrophobicity and faster biodegradation in compost, resulting in a promising material for food packaging applications. |
| first_indexed | 2024-03-11T09:29:05Z |
| format | Article |
| id | doaj.art-0ff238ac4a3b426ea77518fb2346ad64 |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-11T09:29:05Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-0ff238ac4a3b426ea77518fb2346ad642023-11-16T17:46:58ZengMDPI AGPolymers2073-43602023-01-0115353510.3390/polym15030535Effect of TiO<sub>2</sub> Nanoparticles and Extrusion Process on the Physicochemical Properties of Biodegradable and Active Cassava Starch NanocompositesCarolina Iacovone0Federico Yulita1Daniel Cerini2Daniel Peña3Roberto Candal4Silvia Goyanes5Lía I. Pietrasanta6Lucas Guz7Lucía Famá8Laboratorio de Polímeros y Materiales Compuestos (LPMC), Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires C1428EGA, ArgentinaLaboratorio de Polímeros y Materiales Compuestos (LPMC), Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires C1428EGA, ArgentinaLaboratorio de Polímeros y Materiales Compuestos (LPMC), Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires C1428EGA, ArgentinaLaboratorio de Polímeros y Materiales Compuestos (LPMC), Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires C1428EGA, ArgentinaInstituto de Investigación e Ingeniería Ambiental, Escuela de Hábitat y Sostenibilidad, Campus Miguelete, Universidad Nacional de San Martín, San Martín 1650, Provincia de Buenos Aires, ArgentinaLaboratorio de Polímeros y Materiales Compuestos (LPMC), Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires C1428EGA, ArgentinaInstituto de Física de Buenos Aires (IFIBA-CONICET), Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires C1428EGA, ArgentinaInstituto de Investigación e Ingeniería Ambiental, Escuela de Hábitat y Sostenibilidad, Campus Miguelete, Universidad Nacional de San Martín, San Martín 1650, Provincia de Buenos Aires, ArgentinaLaboratorio de Polímeros y Materiales Compuestos (LPMC), Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires C1428EGA, ArgentinaBiodegradable polymers have been strongly recognized as an alternative to replace traditional petrochemical plastics, which have become a global problem due to their long persistence in the environment. In this work, the effect of the addition of titanium dioxide nanoparticles (TiO<sub>2</sub>NP) on the morphology, physicochemical properties and biodegradation under industrial composting conditions of cassava starch-based nanocomposites obtained by extrusion at different screw speeds (80 and 120 rpm) were investigated. Films performed at 120 rpm (S<sub>120</sub> and S<sub>120</sub>-TiO<sub>2</sub>NP) showed completely processed starch and homogeneously distributed nanoparticles, leading to much more flexible nanocomposites than those obtained at 80 rpm. The incorporation of TiO<sub>2</sub>NP led to an increase in storage modulus of all films and, in the case of S<sub>120</sub>-TiO<sub>2</sub>NP, to higher strain at break values. From the Kohlrausch–Williams–Watts theoretical model (KWW), an increase in the relaxation time of the nanocomposites was observed due to a decrease in the number of polymer chains involved in the relaxation process. Additionally, S<sub>120</sub>-TiO<sub>2</sub>NP showed effective protection against UV light, greater hydrophobicity and faster biodegradation in compost, resulting in a promising material for food packaging applications.https://www.mdpi.com/2073-4360/15/3/535starch nanocompositesTiO<sub>2</sub>NPextrusiontensile strengthUV-shieldingindustrial composting |
| spellingShingle | Carolina Iacovone Federico Yulita Daniel Cerini Daniel Peña Roberto Candal Silvia Goyanes Lía I. Pietrasanta Lucas Guz Lucía Famá Effect of TiO<sub>2</sub> Nanoparticles and Extrusion Process on the Physicochemical Properties of Biodegradable and Active Cassava Starch Nanocomposites Polymers starch nanocomposites TiO<sub>2</sub>NP extrusion tensile strength UV-shielding industrial composting |
| title | Effect of TiO<sub>2</sub> Nanoparticles and Extrusion Process on the Physicochemical Properties of Biodegradable and Active Cassava Starch Nanocomposites |
| title_full | Effect of TiO<sub>2</sub> Nanoparticles and Extrusion Process on the Physicochemical Properties of Biodegradable and Active Cassava Starch Nanocomposites |
| title_fullStr | Effect of TiO<sub>2</sub> Nanoparticles and Extrusion Process on the Physicochemical Properties of Biodegradable and Active Cassava Starch Nanocomposites |
| title_full_unstemmed | Effect of TiO<sub>2</sub> Nanoparticles and Extrusion Process on the Physicochemical Properties of Biodegradable and Active Cassava Starch Nanocomposites |
| title_short | Effect of TiO<sub>2</sub> Nanoparticles and Extrusion Process on the Physicochemical Properties of Biodegradable and Active Cassava Starch Nanocomposites |
| title_sort | effect of tio sub 2 sub nanoparticles and extrusion process on the physicochemical properties of biodegradable and active cassava starch nanocomposites |
| topic | starch nanocomposites TiO<sub>2</sub>NP extrusion tensile strength UV-shielding industrial composting |
| url | https://www.mdpi.com/2073-4360/15/3/535 |
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