Effect of Chlorophyll Hybrid Nanopigments from Broccoli Waste on Thermomechanical and Colour Behaviour of Polyester-Based Bionanocomposites
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Título: | Effect of Chlorophyll Hybrid Nanopigments from Broccoli Waste on Thermomechanical and Colour Behaviour of Polyester-Based Bionanocomposites |
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Autor/es: | Micó-Vicent, Bàrbara | Ramos, Marina | Luzi, Francesca | Dominici, Franco | Viqueira, Valentín | Torre, Luigi | Jiménez, Alfonso | Puglia, Debora | Garrigós, María del Carmen |
Grupo/s de investigación o GITE: | Visión y Color | Análisis de Polímeros y Nanomateriales |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Óptica, Farmacología y Anatomía | Universidad de Alicante. Departamento de Química Analítica, Nutrición y Bromatología |
Palabras clave: | Broccoli waste | Chlorophyll | Hybrid nanopigment | Experimental design | Nanoclays | Bionanocomposites |
Área/s de conocimiento: | Óptica | Nutrición y Bromatología | Química Analítica |
Fecha de publicación: | 28-oct-2020 |
Editor: | MDPI |
Cita bibliográfica: | Micó-Vicent B, Ramos M, Luzi F, Dominici F, Viqueira V, Torre L, Jiménez A, Puglia D, Garrigós MC. Effect of Chlorophyll Hybrid Nanopigments from Broccoli Waste on Thermomechanical and Colour Behaviour of Polyester-Based Bionanocomposites. Polymers. 2020; 12(11):2508. https://doi.org/10.3390/polym12112508 |
Resumen: | Natural dyes obtained from agro-food waste can be considered promising substitutes of synthetic dyes to be used in several applications. With this aim, in the present work, we studied the use of chlorophyll dye (CD) extracted from broccoli waste to obtain hybrid nanopigments based on calcined hydrotalcite (HT) and montmorillonite (MMT) nanoclays. The synthesized chlorophyll hybrid nanopigments (CDNPs), optimized by using statistical designed experiments, were melt-extruded with a polyester-based matrix (INZEA) at 7 wt% loading. Mechanical, thermal, structural, morphological and colour properties of the obtained bionanocomposites were evaluated. The obtained results evidenced that the maximum CD adsorption into HT was obtained when adding 5 wt% of surfactant (sodium dodecyl sulphate) without using any biomordant and coupling agent, while the optimal conditions for MMT were achieved without adding any of the studied modifiers. In both cases, an improvement in CD thermal stability was observed by its incorporation in the nanoclays, able to protect chlorophyll degradation. The addition of MMT to INZEA resulted in large ΔE* values compared to HT incorporation, showing bionanocomposite green/yellow tones as a consequence of the CDNPs addition. The results obtained by XRD and TEM revealed a partially intercalated/exfoliated structure for INZEA-based bionanocomposites, due to the presence of an inorganic filler in the formulation of the commercial product, which was also confirmed by TGA analysis. CDNPs showed a reinforcement effect due to the presence of the hybrid nanopigments and up to 26% improvement in Young’s modulus compared to neat INZEA. Finally, the incorporation of CDNPs induced a decrease in thermal stability as well as limited effect in the melting/crystallization behaviour of the INZEA matrix. The obtained results showed the potential use of green natural dyes from broccoli wastes, adsorbed into nanoclays, for the development of naturally coloured bionanocomposites. |
Patrocinador/es: | The authors express their gratitude to the Bio Based Industries Consortium and European Commission for the financial support to the project BARBARA: Biopolymers with advanced functionalities for building and automotive parts processed through additive manufacturing. This project received funding from the Bio Based Industries Joint Undertaking under the European Union’s Horizon 2020 research and innovation programme under grant agreement No 745578. |
URI: | http://hdl.handle.net/10045/109966 |
ISSN: | 2073-4360 |
DOI: | 10.3390/polym12112508 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
Revisión científica: | si |
Versión del editor: | https://doi.org/10.3390/polym12112508 |
Aparece en las colecciones: | INV - GVC - Artículos de Revistas INV - NANOBIOPOL - Artículos de Revistas Investigaciones financiadas por la UE |
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