Eco-friendly preparation of electrically conductive chitosan - reduced graphene oxide flexible bionanocomposites for food packaging and biological applications

Ana Barra; Nuno M. Ferreira; Manuel A. Martins; Oana Lazar; Aida Pantazi; Alin Alexandru Jderu; Sabine M. Neumayer; Brian J. Rodriguez; Marius Enăchescu; Paula Ferreira; Cláudia Nunes

doi:10.1016/j.compscitech.2019.01.027

Eco-friendly preparation of electrically conductive chitosan - reduced graphene oxide flexible bionanocomposites for food packaging and biological applications

Ana Barra, Nuno M. Ferreira, Manuel A. Martins, Oana Lazar, Aida Pantazi, Alin Alexandru Jderu, Sabine M. Neumayer, Brian J. Rodriguez, Marius Enăchescu, Paula Ferreira, Cláudia Nunes

Functional Atomic Force Microscopy Group

Research output: Contribution to journal › Article › peer-review

108 Scopus citations

Abstract

Electrically conductive materials have been highlighted in the biomedical and food packaging areas. Conventional electrically conductive polymers have limited biodegradability and biocompatibility and should be replaced by suitable biomaterials. Herein, electrically conductive bionanocomposites of chitosan and reduced graphene oxide were produced by a green methodology. The reduced graphene oxide was hydrothermally reduced in the presence of caffeic acid and was dispersed into chitosan. The final bionanocomposites achieved an electrical conductivity of 0.7 S/m in-plane and 2.1 × 10⁻⁵ S/m through-plane. The reduced graphene oxide promoted a great enhancement of antioxidant activity and a mechanical reinforcement of chitosan matrix, increasing the tensile strength and decreasing the water solubility. The electrical conductivity, mechanical properties and antioxidant activity of the bionanocomposites can be tuned according to the filler content. These active bionanocomposites, prepared using a green methodology, revealed good electrical and mechanical properties, which make them promising materials for food packaging and biological applications.

Original language	English
Pages (from-to)	53-60
Number of pages	8
Journal	Composites Science and Technology
Volume	173
DOIs	https://doi.org/10.1016/j.compscitech.2019.01.027
State	Published - Mar 22 2019

Funding

This work was developed within the scope of the projects: CICECO-Aveiro Institute of Materials ( UID/CTM/50011/2019 ) and I3N ( UID/CTM/50025/2013 ) financed by national funds through the FCT/MEC (Portugal) and when appropriate co-financed by FEDER under the PT2020 Partnership Agreement. The project M-ERA-NET2/0021/2016 \u2013 BIOFOODPACK - Biocomposite Packaging for Active Preservation of Food is acknowledged for funding together with ECSEL-H2020 project 1/1.1.3/31.01.2018 , POC-SMIS code 115833 - R3PowerUP. CN, NMF and PF thank FCT (Portugal) for the grants ( SFRH/BPD/100627/2014 , SFRH/BPD/111460/2015 and IF/00300/2015 , respectively). This research was partially supported by COST action 15107, Grants No. 101016-080937 and 38973. This publication has emanated from research supported in part by a research grant from Science Foundation (SFI) under the US-Ireland R&D Partnership Programme Grant Number SFI/14/US/I3113 . Some of the measurements were performed on equipment funded by Science Foundation Ireland ( SFI/07/IN1/B931 ).

Keywords

Bionanocomposites
Chitosan
Electrical conductivity
Hydrothermal reduction
Reduced graphene oxide

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10.1016/j.compscitech.2019.01.027

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Barra, A., Ferreira, N. M., Martins, M. A., Lazar, O., Pantazi, A., Jderu, A. A., Neumayer, S. M., Rodriguez, B. J., Enăchescu, M., Ferreira, P., & Nunes, C. (2019). Eco-friendly preparation of electrically conductive chitosan - reduced graphene oxide flexible bionanocomposites for food packaging and biological applications. Composites Science and Technology, 173, 53-60. https://doi.org/10.1016/j.compscitech.2019.01.027

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title = "Eco-friendly preparation of electrically conductive chitosan - reduced graphene oxide flexible bionanocomposites for food packaging and biological applications",

abstract = "Electrically conductive materials have been highlighted in the biomedical and food packaging areas. Conventional electrically conductive polymers have limited biodegradability and biocompatibility and should be replaced by suitable biomaterials. Herein, electrically conductive bionanocomposites of chitosan and reduced graphene oxide were produced by a green methodology. The reduced graphene oxide was hydrothermally reduced in the presence of caffeic acid and was dispersed into chitosan. The final bionanocomposites achieved an electrical conductivity of 0.7 S/m in-plane and 2.1 × 10−5 S/m through-plane. The reduced graphene oxide promoted a great enhancement of antioxidant activity and a mechanical reinforcement of chitosan matrix, increasing the tensile strength and decreasing the water solubility. The electrical conductivity, mechanical properties and antioxidant activity of the bionanocomposites can be tuned according to the filler content. These active bionanocomposites, prepared using a green methodology, revealed good electrical and mechanical properties, which make them promising materials for food packaging and biological applications.",

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author = "Ana Barra and Ferreira, {Nuno M.} and Martins, {Manuel A.} and Oana Lazar and Aida Pantazi and Jderu, {Alin Alexandru} and Neumayer, {Sabine M.} and Rodriguez, {Brian J.} and Marius En{\u a}chescu and Paula Ferreira and Cl{\'a}udia Nunes",

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Barra, A, Ferreira, NM, Martins, MA, Lazar, O, Pantazi, A, Jderu, AA, Neumayer, SM, Rodriguez, BJ, Enăchescu, M, Ferreira, P & Nunes, C 2019, 'Eco-friendly preparation of electrically conductive chitosan - reduced graphene oxide flexible bionanocomposites for food packaging and biological applications', Composites Science and Technology, vol. 173, pp. 53-60. https://doi.org/10.1016/j.compscitech.2019.01.027

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AU - Barra, Ana

AU - Ferreira, Nuno M.

AU - Martins, Manuel A.

AU - Lazar, Oana

AU - Pantazi, Aida

AU - Jderu, Alin Alexandru

AU - Neumayer, Sabine M.

AU - Rodriguez, Brian J.

AU - Enăchescu, Marius

AU - Ferreira, Paula

AU - Nunes, Cláudia

PY - 2019/3/22

Y1 - 2019/3/22

N2 - Electrically conductive materials have been highlighted in the biomedical and food packaging areas. Conventional electrically conductive polymers have limited biodegradability and biocompatibility and should be replaced by suitable biomaterials. Herein, electrically conductive bionanocomposites of chitosan and reduced graphene oxide were produced by a green methodology. The reduced graphene oxide was hydrothermally reduced in the presence of caffeic acid and was dispersed into chitosan. The final bionanocomposites achieved an electrical conductivity of 0.7 S/m in-plane and 2.1 × 10−5 S/m through-plane. The reduced graphene oxide promoted a great enhancement of antioxidant activity and a mechanical reinforcement of chitosan matrix, increasing the tensile strength and decreasing the water solubility. The electrical conductivity, mechanical properties and antioxidant activity of the bionanocomposites can be tuned according to the filler content. These active bionanocomposites, prepared using a green methodology, revealed good electrical and mechanical properties, which make them promising materials for food packaging and biological applications.

AB - Electrically conductive materials have been highlighted in the biomedical and food packaging areas. Conventional electrically conductive polymers have limited biodegradability and biocompatibility and should be replaced by suitable biomaterials. Herein, electrically conductive bionanocomposites of chitosan and reduced graphene oxide were produced by a green methodology. The reduced graphene oxide was hydrothermally reduced in the presence of caffeic acid and was dispersed into chitosan. The final bionanocomposites achieved an electrical conductivity of 0.7 S/m in-plane and 2.1 × 10−5 S/m through-plane. The reduced graphene oxide promoted a great enhancement of antioxidant activity and a mechanical reinforcement of chitosan matrix, increasing the tensile strength and decreasing the water solubility. The electrical conductivity, mechanical properties and antioxidant activity of the bionanocomposites can be tuned according to the filler content. These active bionanocomposites, prepared using a green methodology, revealed good electrical and mechanical properties, which make them promising materials for food packaging and biological applications.

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KW - Chitosan

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Eco-friendly preparation of electrically conductive chitosan - reduced graphene oxide flexible bionanocomposites for food packaging and biological applications

Abstract

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Keywords

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