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Giannakas AE, Zaharioudakis K, Kollia E, Kopsacheili A, Avdylaj L, Georgopoulos S, Leontiou A, Karabagias VK, Kehayias G, Ragkava E, Proestos C, Salmas CE. The Development of a Novel Sodium Alginate-Based Edible Active Hydrogel Coating and Its Application on Traditional Greek Spreadable Cheese. Gels 2023; 9:807. [PMID: 37888380 PMCID: PMC10606390 DOI: 10.3390/gels9100807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Revised: 10/02/2023] [Accepted: 10/05/2023] [Indexed: 10/28/2023] Open
Abstract
The necessity of reducing the greenhouse effect by decreasing the carbon dioxide fingerprint directed the food packaging technology to use biobased raw materials. Alginates, which are derived from brown algae species, are one of the most promising biobased biopolymers for the development of edible active coatings capable of protecting food from oxidation/bacterial spoilage. In this study, sodium alginate, which was plasticized with glycerol and mixed with a biobased thymol/natural halloysite nanohybrid, was used to develop novel edible active coatings. Nanocomposite coatings were also developed in this project by mixing pure halloysite with sodium alginate/glycerol matrix and were used as reference material for comparison reasons. Instrumental analysis indicated a higher compatibility of a thymol/halloysite nanohybrid with a sodium alginate/glycerol matrix compared to pure halloysite with a sodium alginate/glycerol matrix. Increased compatibility resulted in improved tensile properties, water/oxygen barrier properties, and total antioxidant activity. These edible active coatings were applied to traditional Greek spread cheese and showed a reduction in the mesophilic microbial population over one log10 unit (cfu/g) compared to uncoated cheese. Moreover, the reduction in the mesophilic microbial population increased with the increase in halloysite and thymol content, indicating such sodium alginate/glycerol/thymol/halloysite hydrogels as promising edible active coatings for dairy products.
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Affiliation(s)
- Aris E. Giannakas
- Department of Food Science and Technology, University of Patras, 30100 Agrinio, Greece; (K.Z.); (S.G.); (A.L.); (V.K.K.); (G.K.); (E.R.)
| | - Konstantinos Zaharioudakis
- Department of Food Science and Technology, University of Patras, 30100 Agrinio, Greece; (K.Z.); (S.G.); (A.L.); (V.K.K.); (G.K.); (E.R.)
| | - Eleni Kollia
- Laboratory of Food Chemistry, Department of Chemistry, National and Kapodistrian University of Athens Zografou, 15771 Athens, Greece; (E.K.); (A.K.); (L.A.)
| | - Anna Kopsacheili
- Laboratory of Food Chemistry, Department of Chemistry, National and Kapodistrian University of Athens Zografou, 15771 Athens, Greece; (E.K.); (A.K.); (L.A.)
| | - Learda Avdylaj
- Laboratory of Food Chemistry, Department of Chemistry, National and Kapodistrian University of Athens Zografou, 15771 Athens, Greece; (E.K.); (A.K.); (L.A.)
| | - Stavros Georgopoulos
- Department of Food Science and Technology, University of Patras, 30100 Agrinio, Greece; (K.Z.); (S.G.); (A.L.); (V.K.K.); (G.K.); (E.R.)
| | - Areti Leontiou
- Department of Food Science and Technology, University of Patras, 30100 Agrinio, Greece; (K.Z.); (S.G.); (A.L.); (V.K.K.); (G.K.); (E.R.)
| | - Vassilios K. Karabagias
- Department of Food Science and Technology, University of Patras, 30100 Agrinio, Greece; (K.Z.); (S.G.); (A.L.); (V.K.K.); (G.K.); (E.R.)
| | - George Kehayias
- Department of Food Science and Technology, University of Patras, 30100 Agrinio, Greece; (K.Z.); (S.G.); (A.L.); (V.K.K.); (G.K.); (E.R.)
| | - Efthymia Ragkava
- Department of Food Science and Technology, University of Patras, 30100 Agrinio, Greece; (K.Z.); (S.G.); (A.L.); (V.K.K.); (G.K.); (E.R.)
| | - Charalampos Proestos
- Laboratory of Food Chemistry, Department of Chemistry, National and Kapodistrian University of Athens Zografou, 15771 Athens, Greece; (E.K.); (A.K.); (L.A.)
| | - Constantinos E. Salmas
- Department of Material Science and Engineering, University of Ioannina, 45110 Ioannina, Greece
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Chen P, Xie F, Tang F, McNally T. Influence of plasticiser type and nanoclay on the properties of chitosan-based materials. Eur Polym J 2021. [DOI: 10.1016/j.eurpolymj.2020.110225] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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3
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Glycerol plasticisation of chitosan/carboxymethyl cellulose composites: Role of interactions in determining structure and properties. Int J Biol Macromol 2020; 163:683-693. [DOI: 10.1016/j.ijbiomac.2020.07.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 06/30/2020] [Accepted: 07/01/2020] [Indexed: 11/21/2022]
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4
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Chen P, Xie F, Tang F, McNally T. Graphene oxide enhanced ionic liquid plasticisation of chitosan/alginate bionanocomposites. Carbohydr Polym 2020; 253:117231. [PMID: 33278989 DOI: 10.1016/j.carbpol.2020.117231] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Revised: 09/30/2020] [Accepted: 10/09/2020] [Indexed: 10/23/2022]
Abstract
The effect of graphene oxide (GO) or reduced GO (rGO) on the structure and properties of polyelectrolyte-complexed chitosan/alginate bionanocomposites is highly dependent on plasticiser type (glycerol or 1-ethyl-3-methylimidazolium acetate ([C2mim][OAc])) due to the competing interactions between the components. For the glycerol-plasticised chitosan/alginate matrix, inclusion of GO/rGO enhanced the chitosan crystallinity and increased matrix ductility. While the chitosan/alginate matrix plasticised by [C2mim][OAc] showed dramatically weakened interactions between the two biopolymers, GO was highly effective at counteracting the effect of [C2mim][OAc] by interacting with the biopolymers and the ionic liquid ions, resulting in enhanced mechanical properties and decreased surface hydrophilicity. Compared with GO, rGO was much less effective at promoting chitosan-alginate interactions and even resulted in higher surface hydrophilicity. However, irrespective of the plasticiser type, inclusion of rGO resulted in reduced crystallinity by restricting the interactions between [C2mim][OAc] and the biopolymers, and higher ionic conductivity.
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Affiliation(s)
- Pei Chen
- College of Food Science, South China Agricultural University, Guangzhou, Guangdong 510642, China; International Institute for Nanocomposites Manufacturing (IINM), WMG, University of Warwick, Coventry CV4 7AL, United Kingdom
| | - Fengwei Xie
- International Institute for Nanocomposites Manufacturing (IINM), WMG, University of Warwick, Coventry CV4 7AL, United Kingdom; School of Chemical Engineering, The University of Queensland, Brisbane, Qld 4072, Australia.
| | - Fengzai Tang
- WMG, University of Warwick, Coventry CV4 7AL, United Kingdom
| | - Tony McNally
- International Institute for Nanocomposites Manufacturing (IINM), WMG, University of Warwick, Coventry CV4 7AL, United Kingdom.
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5
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Chen P, Xie F, Tang F, McNally T. Ionic Liquid (1-Ethyl-3-methylimidazolium Acetate) Plasticization of Chitosan-Based Bionanocomposites. ACS OMEGA 2020; 5:19070-19081. [PMID: 32775909 PMCID: PMC7408243 DOI: 10.1021/acsomega.0c02418] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Accepted: 07/08/2020] [Indexed: 05/04/2023]
Abstract
The structure and properties of different biopolymer composites based on chitosan and chitosan/carboxymethyl cellulose (CMC) are governed by multiple structure-property relationships associated with different phase interactions. Plasticization of these matrices with ionic liquid 1-ethyl-3-methylimidazolium acetate ([C2mim][OAc]) played a dominant role, increasing the mobility of biopolymer chains as well as ions and associated dipoles but reducing biopolymer chain interactions, crystallinity, and thermal stability. These structural changes led to higher matrix ionic conductivity, shorter electrical relaxation time, and greater matrix ductility. The inclusion of graphene oxide (GO) and reduced GO (rGO) also influenced the structure and properties of these bionanocomposites by disrupting the biopolymer hydrogen bonding and/or polyelectrolyte complexation (PEC) and interacting with [C2mim][OAc]. The impact of GO/rGO was more evident for 20 wt % [C2mim][OAc], such as increased crystallinity and thermal stability of chitosan. PEC was hindered with excess (40 wt %) [C2mim][OAc] added and further hindered again when rGO was included. This study shows that the structure and properties of bionanocomposites are not just determined by the surface chemistry of GO/rGO but can also be influenced by multiple interactions involving plasticizers such as ILs and additional biopolymers.
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Affiliation(s)
- Pei Chen
- College
of Food Science, South China Agricultural
University, Guangzhou, Guangdong 510642, China
- International
Institute for Nanocomposites Manufacturing (IINM), WMG, University of Warwick, Coventry CV4 7AL, United Kingdom
| | - Fengwei Xie
- International
Institute for Nanocomposites Manufacturing (IINM), WMG, University of Warwick, Coventry CV4 7AL, United Kingdom
- School
of Chemical Engineering, The University
of Queensland, Brisbane, Qld 4072, Australia
- ,
| | - Fengzai Tang
- WMG, University of Warwick, Coventry CV4 7AL, United Kingdom
| | - Tony McNally
- International
Institute for Nanocomposites Manufacturing (IINM), WMG, University of Warwick, Coventry CV4 7AL, United Kingdom
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6
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Chen P, Xie F, Tang F, McNally T. Structure and properties of thermomechanically processed chitosan/carboxymethyl cellulose/graphene oxide polyelectrolyte complexed bionanocomposites. Int J Biol Macromol 2020; 158:420-429. [PMID: 32376251 DOI: 10.1016/j.ijbiomac.2020.04.259] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Revised: 04/23/2020] [Accepted: 04/29/2020] [Indexed: 01/19/2023]
Abstract
Bionanocomposites of chitosan and chitosan/carboxymethyl cellulose (CMC) polyelectrolyte complexed materials with graphene oxide (GO) or reduced graphene oxide (rGO) were prepared by thermomechanical processing with excellent levels of dispersion. While GO has a greater affinity with the chitosan polycation, rGO had a more pronounced effect on properties resulting in increased tensile strength, Shore D hardness, and thermal stability of both matrices. Although GO is more hydrophilic than rGO, the former increased more effectively the surface hydrophobicity of the biocomposites regardless of matrix type. GO and rGO changed the α-transition of the biocomposites in a similar manner. The electrochemical properties of the biocomposites were influenced by both nanofiller type and matrix. This research revealed that inclusion of 2D carbon nanomaterials can alter biopolymer interactions and that the phase structure of the biopolymer blend may play a more important role than nanofiller-matrix interactions in determining the overall properties of these bionanocomposites.
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Affiliation(s)
- Pei Chen
- College of Food Science, South China Agricultural University, Guangzhou, Guangdong 510642, China; International Institute for Nanocomposites Manufacturing (IINM), WMG, University of Warwick, Coventry CV4 7AL, United Kingdom
| | - Fengwei Xie
- International Institute for Nanocomposites Manufacturing (IINM), WMG, University of Warwick, Coventry CV4 7AL, United Kingdom; School of Chemical Engineering, The University of Queensland, Brisbane, QLD 4072, Australia.
| | - Fengzai Tang
- WMG, University of Warwick, Coventry CV4 7AL, United Kingdom
| | - Tony McNally
- International Institute for Nanocomposites Manufacturing (IINM), WMG, University of Warwick, Coventry CV4 7AL, United Kingdom.
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Oyervides‐Muñoz E, Avérous L, Sosa‐Santillán GDJ, Pollet E, Pérez‐Aguilar NV, Rojas‐Caldera CM, Fuentes‐Avilés JG, García‐Astrain C. EDC‐Mediated Grafting of Quaternary Ammonium Salts onto Chitosan for Antibacterial and Thermal Properties Improvement. MACROMOL CHEM PHYS 2019. [DOI: 10.1002/macp.201800530] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ernesto Oyervides‐Muñoz
- Facultad de Ciencias QuímicasUniversidad Autónoma de Coahuila Blvd. V. Carranza y J. Cárdenas V. SaltilloCoahuila Z. C. 25280 México
| | - Luc Avérous
- BioTeam/ICPEES—ECPMUMR CNRS 7515, Université de Strasbourg 25 rue Becquerel, Cedex 2 Strasbourg 67087 France
| | - Gerardo de Jesús Sosa‐Santillán
- Facultad de Ciencias QuímicasUniversidad Autónoma de Coahuila Blvd. V. Carranza y J. Cárdenas V. SaltilloCoahuila Z. C. 25280 México
| | - Eric Pollet
- BioTeam/ICPEES—ECPMUMR CNRS 7515, Université de Strasbourg 25 rue Becquerel, Cedex 2 Strasbourg 67087 France
| | - Nancy Verónica Pérez‐Aguilar
- Facultad de Ciencias QuímicasUniversidad Autónoma de Coahuila Blvd. V. Carranza y J. Cárdenas V. SaltilloCoahuila Z. C. 25280 México
| | - Claudia Maribel Rojas‐Caldera
- Facultad de Ciencias QuímicasUniversidad Autónoma de Coahuila Blvd. V. Carranza y J. Cárdenas V. SaltilloCoahuila Z. C. 25280 México
| | - José Guadalupe Fuentes‐Avilés
- Facultad de Ciencias QuímicasUniversidad Autónoma de Coahuila Blvd. V. Carranza y J. Cárdenas V. SaltilloCoahuila Z. C. 25280 México
| | - Clara García‐Astrain
- BioTeam/ICPEES—ECPMUMR CNRS 7515, Université de Strasbourg 25 rue Becquerel, Cedex 2 Strasbourg 67087 France
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Shang X, Jiang H, Wang Q, Liu P, Xie F. Cellulose-starch Hybrid Films Plasticized by Aqueous ZnCl₂ Solution. Int J Mol Sci 2019; 20:E474. [PMID: 30678311 PMCID: PMC6386833 DOI: 10.3390/ijms20030474] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2018] [Revised: 01/13/2019] [Accepted: 01/16/2019] [Indexed: 12/20/2022] Open
Abstract
Starch and cellulose are two typical natural polymers from plants that have similar chemical structures. The blending of these two biopolymers for materials development is an interesting topic, although how their molecular interactions could influence the conformation and properties of the resultant materials has not been studied extensively. Herein, the rheological properties of cellulose/starch/ZnCl₂ solutions were studied, and the structures and properties of cellulose-starch hybrid films were characterized. The rheological study shows that compared with starch (containing mostly amylose), cellulose contributed more to the solution's viscosity and has a stronger shear-thinning behavior. A comparison between the experimental and calculated zero-shear-rate viscosities indicates that compact complexes (interfacial interactions) formed between cellulose and starch with ≤50 wt % cellulose content, whereas a loose structure (phase separation) existed with ≥70 wt % cellulose content. For starch-rich hybrid films prepared by compression molding, less than 7 wt % of cellulose was found to improve the mechanical properties despite the reduced crystallinity of the starch; for cellulose-rich hybrid films, a higher content of starch reduced the material properties, although the chemical interactions were not apparently influenced. It is concluded that the mechanical properties of biopolymer films were mainly affected by the structural conformation, as indicated by the rheological results.
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Affiliation(s)
- Xiaoqin Shang
- School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China.
- Fine Chemical Research Institute, Guangzhou University, Guangzhou 510006, China.
| | - Huihua Jiang
- School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China.
- Fine Chemical Research Institute, Guangzhou University, Guangzhou 510006, China.
| | - Qingling Wang
- School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China.
- Fine Chemical Research Institute, Guangzhou University, Guangzhou 510006, China.
| | - Peng Liu
- School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China.
- Fine Chemical Research Institute, Guangzhou University, Guangzhou 510006, China.
| | - Fengwei Xie
- Institute of Advanced Study, University of Warwick, Coventry CV4 7HS, UK.
- International Institute for Nanocomposites Manufacturing (IINM), WMG, University of Warwick, Coventry CV4 7AL, UK.
- School of Chemical Engineering, The University of Queensland, Brisbane, Qld 4072, Australia.
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9
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Immobilized lipases in sericin–dimethylolurea films as biocatalysts in esterification. CHEMICAL PAPERS 2018. [DOI: 10.1007/s11696-018-0624-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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10
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Bionanocomposite Films Prepared from Corn Starch With and Without Nanopackaged Jamaica (Hibiscus sabdariffa) Flower Extract. FOOD BIOPROCESS TECH 2018. [DOI: 10.1007/s11947-018-2160-z] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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11
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Katerinopoulou K, Giannakas A, Barkoula NM, Ladavos A. Preparation, Characterization, and Biodegradability Assessment of Maize Starch-(PVOH)/Clay Nanocomposite Films. STARCH-STARKE 2018. [DOI: 10.1002/star.201800076] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Katerina Katerinopoulou
- Laboratory of Food Technology; Department of Business Administration of Food and Agricultural Enterprises; University of Patras; Agrinio 30100 Greece
| | - Aris Giannakas
- Laboratory of Food Technology; Department of Business Administration of Food and Agricultural Enterprises; University of Patras; Agrinio 30100 Greece
| | | | - Athanasios Ladavos
- Laboratory of Food Technology; Department of Business Administration of Food and Agricultural Enterprises; University of Patras; Agrinio 30100 Greece
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12
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Bionanocomposite films developed from corn starch and natural and modified nano-clays with or without added blueberry extract. Food Hydrocoll 2018. [DOI: 10.1016/j.foodhyd.2017.10.017] [Citation(s) in RCA: 94] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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13
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Cobos M, González B, Fernández MJ, Fernández MD. Study on the effect of graphene and glycerol plasticizer on the properties of chitosan-graphene nanocomposites via in situ green chemical reduction of graphene oxide. Int J Biol Macromol 2018; 114:599-613. [PMID: 29588207 DOI: 10.1016/j.ijbiomac.2018.03.129] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Revised: 02/27/2018] [Accepted: 03/21/2018] [Indexed: 01/11/2023]
Abstract
Unplasticized and glycerol plasticized chitosan/graphene (CS/GS) nanocomposites were synthesized via in situ chemical reduction of graphene oxide sheets (GO) with l-ascorbic acid (L-AA) as reductant by solution casting. The reduction of GO with L-AA was investigated to establish the optimal amount of reductant required to produce chemically reduced graphene sheets (GS). The combine effect of both nanofiller and glycerol on the structure, thermal, mechanical, and electrical properties of CS/GS nanocomposite films was evaluated. Materials were characterized by FT-IR, NMR, UV-Vis, XPS, XRD, Raman, SEM, TEM, and TGA. The results showed that GS sheets were homogeneously dispersed throughout the CS matrix, and that interactions between CS and the surface of GS took place. When compared with neat CS, nanocomposites showed a decrease in the crystallinity, better thermal stability under oxidative atmosphere, and improved mechanical properties, while maintained the thermal properties of CS under inert conditions. Combined use of glycerol and GS led to substantially enhanced mechanical properties. The electrical conductivity was increased with increasing GS loading in nanocomposite. This study demonstrates how CS/GS nanocomposites performance properties can be tailored by controlling GsS and plasticizer content.
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Affiliation(s)
- Mónica Cobos
- Department of Polymer Science and Technology, Faculty of Chemistry, University of the Basque Country, Paseo Manuel Lardizábal 3, San Sebastián 20018, Spain
| | - Bernardina González
- Department of Polymer Science and Technology, Faculty of Chemistry, University of the Basque Country, Paseo Manuel Lardizábal 3, San Sebastián 20018, Spain
| | - M Jesús Fernández
- Department of Polymer Science and Technology, Faculty of Chemistry, University of the Basque Country, Paseo Manuel Lardizábal 3, San Sebastián 20018, Spain
| | - M Dolores Fernández
- Department of Polymer Science and Technology, Faculty of Chemistry, University of the Basque Country, Paseo Manuel Lardizábal 3, San Sebastián 20018, Spain.
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Gabriel JS, Gonzaga VAM, Poli AL, Schmitt CC. Photochemical synthesis of silver nanoparticles on chitosans/montmorillonite nanocomposite films and antibacterial activity. Carbohydr Polym 2017; 171:202-210. [PMID: 28578955 DOI: 10.1016/j.carbpol.2017.05.021] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Revised: 04/25/2017] [Accepted: 05/05/2017] [Indexed: 11/25/2022]
Abstract
Silver nanoparticles (AgNPs) were synthetized on chitosans/montmorillonite nanocomposite films by photochemical method. Nanocomposites were prepared using chitosans with different molar masses and deacetylation degrees, as well as modified with diethylaminoethyl (DEAE) and dodecyl groups. AgNPs formation on the films was followed by the appearance of the plasmon band around 440nm as a function of irradiation time. TEM images revealed AgNPs with spherical morphology for all nanocomposites. For nanocomposites using modified chitosans, the AgNPs synthesis occurred quickly (1.5h) while for the others films it was above 11h. The film of modified chitosan with dodecyl and DEAE groups presented smaller and more uniform nanoparticles size along mixture of exfoliated and intercalated structures. This modified chitosan is an amphiphilic compound that can act controlling the size/shape of the AgNPs. The results of antibacterial activity suggested that all nanocomposite-AgNPs films inhibited the growth of Escherichia coli and Bacillus subtilis.
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Affiliation(s)
- Juliana S Gabriel
- Instituto de Química de São Carlos, Universidade de São Paulo, São Carlos SP, Caixa Postal 780, 13560-970, Brazil.
| | - Virgínia A M Gonzaga
- Instituto de Química de São Carlos, Universidade de São Paulo, São Carlos SP, Caixa Postal 780, 13560-970, Brazil.
| | - Alessandra L Poli
- Instituto de Química de São Carlos, Universidade de São Paulo, São Carlos SP, Caixa Postal 780, 13560-970, Brazil.
| | - Carla C Schmitt
- Instituto de Química de São Carlos, Universidade de São Paulo, São Carlos SP, Caixa Postal 780, 13560-970, Brazil.
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Cobos M, González B, Fernández MJ, Fernández MD. Chitosan-graphene oxide nanocomposites: Effect of graphene oxide nanosheets and glycerol plasticizer on thermal and mechanical properties. J Appl Polym Sci 2017. [DOI: 10.1002/app.45092] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Mónica Cobos
- Faculty of Chemistry, Department of Polymer Science and Technology; University of the Basque Country; Paseo Manuel Lardizábal 3 San Sebastián 20018 Spain
| | - Bernardina González
- Faculty of Chemistry, Department of Polymer Science and Technology; University of the Basque Country; Paseo Manuel Lardizábal 3 San Sebastián 20018 Spain
| | - M. Jesús Fernández
- Faculty of Chemistry, Department of Polymer Science and Technology; University of the Basque Country; Paseo Manuel Lardizábal 3 San Sebastián 20018 Spain
| | - M. Dolores Fernández
- Faculty of Chemistry, Department of Polymer Science and Technology; University of the Basque Country; Paseo Manuel Lardizábal 3 San Sebastián 20018 Spain
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16
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Gao C, Pollet E, Avérous L. Properties of glycerol-plasticized alginate films obtained by thermo-mechanical mixing. Food Hydrocoll 2017. [DOI: 10.1016/j.foodhyd.2016.09.023] [Citation(s) in RCA: 93] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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17
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Innovative plasticized alginate obtained by thermo-mechanical mixing: Effect of different biobased polyols systems. Carbohydr Polym 2017; 157:669-676. [DOI: 10.1016/j.carbpol.2016.10.037] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2016] [Revised: 09/13/2016] [Accepted: 10/13/2016] [Indexed: 10/20/2022]
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18
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Targeted chitosan-based bionanocomposites for controlled oral mucosal delivery of chlorhexidine. Int J Pharm 2016; 509:408-418. [DOI: 10.1016/j.ijpharm.2016.06.011] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Revised: 05/18/2016] [Accepted: 06/06/2016] [Indexed: 12/20/2022]
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19
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Vlacha M, Giannakas A, Katapodis P, Stamatis H, Ladavos A, Barkoula NM. On the efficiency of oleic acid as plasticizer of chitosan/clay nanocomposites and its role on thermo-mechanical, barrier and antimicrobial properties – Comparison with glycerol. Food Hydrocoll 2016. [DOI: 10.1016/j.foodhyd.2016.01.003] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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20
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Sarin S, Kolesnikova S, Postnova I, Ha CS, Shchipunov Y. Bionanocomposite from self-assembled building blocks of nacre-like crystalline polymorph of chitosan with clay nanoplatelets. RSC Adv 2016. [DOI: 10.1039/c6ra02996e] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Films containing a new crystalline polymorph are prepared by a one-pot technique combining the formation of building blocks of clay nanoplatelets with chitosan macromolecules and their evaporation-induced self-assembly.
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Affiliation(s)
- Sergey Sarin
- Institute of Chemistry
- Far East Department
- Russian Academy of Sciences
- Vladivostok
- Russia
| | - Sophia Kolesnikova
- G. B. Elyakov Pacific Institute of Bioorganic Chemistry
- Far East Department
- Russian Academy of Sciences
- Vladivostok
- Russia
| | - Irina Postnova
- Far Eastern Federal University
- School of Natural Sciences
- Vladivostok
- 690090 Russia
| | - Chang-Sik Ha
- Department of Polymer Science and Engineering
- Pusan National University
- 609-735 Busan
- Korea
| | - Yury Shchipunov
- Institute of Chemistry
- Far East Department
- Russian Academy of Sciences
- Vladivostok
- Russia
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21
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Moghadas B, Dashtimoghadam E, Mirzadeh H, Seidi F, Hasani-Sadrabadi MM. Novel chitosan-based nanobiohybrid membranes for wound dressing applications. RSC Adv 2016. [DOI: 10.1039/c5ra23875g] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Montmorillonite nanolayers were treated with chitosan sulfate, as a functional biocompatibilizer, and then exfoliated in chitosan matrix to design nanohybrid membranes for potential wound dressing applications with enhanced physical, mechanical and antibacterial properties.
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Affiliation(s)
- Babak Moghadas
- Department of Polymer Engineering and Color Technology
- Amirkabir University of Technology
- Tehran
- Iran
| | - Erfan Dashtimoghadam
- Department of Polymer Engineering and Color Technology
- Amirkabir University of Technology
- Tehran
- Iran
| | - Hamid Mirzadeh
- Department of Polymer Engineering and Color Technology
- Amirkabir University of Technology
- Tehran
- Iran
| | - Farzad Seidi
- Department of Chemistry
- Sanandaj Branch
- Islamic Azad University
- Sanandaj
- Iran
| | - Mohammad Mahdi Hasani-Sadrabadi
- Laboratoire de Microsystemes (LMIS4)
- Institute of Microengineering
- Institute of Bioengineering
- École Polytechnique Fédérale de Lausanne (EPFL)
- Lausanne
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22
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The role of glycerol and water in flexible silk sericin film. Int J Biol Macromol 2015; 82:945-51. [PMID: 26562547 DOI: 10.1016/j.ijbiomac.2015.11.016] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2015] [Revised: 11/04/2015] [Accepted: 11/05/2015] [Indexed: 10/22/2022]
Abstract
Silk sericin (SS) can be obtained as a byproduct during the silk fiber process, but its application has been limited due to the brittleness of the SS film. To enhance the flexibility of the SS film, glycerol (Glc) has been added as a plasticizer. The addition of Glc enhanced the elongation property of the SS film when the Glc content was 50-70 wt% of SS. Glc also induced the structural transition of SS from a random coil structure to a β-sheet structure. The inconsistent increase of elongation and β-sheet structure of the SS/Glc film were explained by the content of moisture in the SS/Glc film. The moisture content of the SS/Glc film increased proportionally when the Glc content was higher than 50 wt% of SS, which was the same Glc content range that exhibited the plasticizing effect. Therefore, the plasticizing effect on the SS film may occur not only because of Glc but also because of water. Furthermore, water also contributed to the increase in the β-sheet structure development. Our results suggest that the moisture content in the plasticized protein film may play an important role when the plasticizer has hygroscopic properties.
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23
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Interplay between processing and performance in chitosan-based clay nanocomposite films. Polym Bull (Berl) 2015. [DOI: 10.1007/s00289-015-1329-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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24
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Zeng M, Yuan X, Zuo S, Qi C. Novel chitosan-based/montmorillonite/palladium hybrid microspheres as heterogeneous catalyst for Sonogashira reactions. RSC Adv 2015. [DOI: 10.1039/c5ra01902h] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The objective of this study was to develop novel chitosan-based/montmorillonite/palladium (CS/MMT/Pd) hybrid microsphere catalysts with improved properties for use in Sonogashira reactions.
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Affiliation(s)
- Minfeng Zeng
- Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process
- Shaoxing University
- Shaoxing
- China
| | - Xia Yuan
- Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process
- Shaoxing University
- Shaoxing
- China
- The School of Material Science and Chemical Engineering
| | - Shufeng Zuo
- Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process
- Shaoxing University
- Shaoxing
- China
| | - Chenze Qi
- Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process
- Shaoxing University
- Shaoxing
- China
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25
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Bandyopadhyay J, Sinha Ray S, Scriba M, Wesley-Smith J. A combined experimental and theoretical approach to establish the relationship between shear force and clay platelet delamination in melt-processed polypropylene nanocomposites. POLYMER 2014. [DOI: 10.1016/j.polymer.2014.03.014] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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26
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Giannakas A, Grigoriadi K, Leontiou A, Barkoula NM, Ladavos A. Preparation, characterization, mechanical and barrier properties investigation of chitosan-clay nanocomposites. Carbohydr Polym 2014; 108:103-11. [PMID: 24751253 DOI: 10.1016/j.carbpol.2014.03.019] [Citation(s) in RCA: 102] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2013] [Revised: 03/07/2014] [Accepted: 03/10/2014] [Indexed: 11/16/2022]
Abstract
In the current study the effect of dilution of chitosan acetate solution and of the use of a reflux-solution method on the morphology, the mechanical and water barrier properties of chitosan based nanocomposites is being investigated. Two series of nanocomposite films from two chitosan acetate solutions with 2 w/v% and 1 w/v% in chitosan were prepared, with 3, 5 and 10 wt% Na-montmorillonite (NaMMT) and/or 30 wt% glycerol. Intercalation of NaMMT was more effective in films based on 2 w/v% solutions which presented decreased hydrated crystallinity. Upon NaMMT addition an enhancement was found in stiffness and strength (up to 100%) and a remarkable decrease in the elongation at break (up to 75%) and water vapor permeability (WVP) (up to 65%). This enhancement was less pronounced in 1 w/v% systems. Addition of glycerol had a negative effect on the stiffness, strength and WVP, and a positive effect on the elongation at break and the absorbed water. Compared with the conventional solution cast method, the reflux treatment led to a significant improvement of the tested properties of nanocomposite films.
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Affiliation(s)
- Aris Giannakas
- Department of Business Administration of Food and Agricultural Enterprises, University of Patras, Agrinio 30100, Greece.
| | - Kalouda Grigoriadi
- Department of Materials Engineering, University of Ioannina, Ioannina 45110, Greece.
| | - Areti Leontiou
- Department of Business Administration of Food and Agricultural Enterprises, University of Patras, Agrinio 30100, Greece.
| | | | - Athanasios Ladavos
- Department of Business Administration of Food and Agricultural Enterprises, University of Patras, Agrinio 30100, Greece.
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