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Hernández-Rangel A, Silva-Bermudez P, Almaguer-Flores A, García VI, Esparza R, Luna-Bárcenas G, Velasquillo C. Development and characterization of three-dimensional antibacterial nanocomposite sponges of chitosan, silver nanoparticles and halloysite nanotubes. RSC Adv 2024; 14:24910-24927. [PMID: 39131504 PMCID: PMC11310750 DOI: 10.1039/d4ra04274c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2024] [Accepted: 07/30/2024] [Indexed: 08/13/2024] Open
Abstract
In this work, we developed novel nanocomposite three-dimensional (3D) scaffolds composed of chitosan (CTS), halloysite nanotubes (HNTs) and silver nanoparticles (AgNPs) with enhanced antimicrobial activity and fibroblast cell compatibility for their potential use in wound dressing applications. A stock CTS-HNT solution was obtained by mixing water-dispersed HNTs with CTS aqueous-acid solution, and then, AgNPs, in different concentrations, were synthesized in the CTS-HNT solution via a CTS-mediated in situ reduction method. Finally, freeze-gelation was used to obtain CTS-HNT-AgNP 3D porous scaffolds (sponges). Morphology analysis showed that synthesized AgNPs were spherical with an average diameter of 11 nm. HNTs' presence did not affect the AgNPs morphology or size but improved the mechanical properties of the scaffolds, where CTS-HNT sponges exhibited a 5 times larger compression stress than bare-CTS sponges. AgNPs in the scaffolds further increased their mechanical strength in correlation to the AgNP concentration, and conferred them improved antibacterial activity against Gram-negative and Gram-positive bacteria, inhibiting the planktonic proliferation and adhesion of bacteria in a AgNP concentration depending on manner. In vitro cell viability and immunofluorescence assays exhibited that human fibroblast (HF) culture was supported by the sponges, where HF retained their phenotype upon culture on the sponges. Present CTS-HNT-AgNP sponges showed promising mechanical, antibacterial and cytocompatibility properties to be used as potential scaffolds for wound dressing applications.
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Affiliation(s)
- A Hernández-Rangel
- Instituto Politécnico Nacional, ESIQIE Av. IPN S/N Zacatenco Mexico City 07738 Mexico
| | - P Silva-Bermudez
- Unidad de Ingeniería de Tejidos, Terapia Celular y Medicina Regenerativa, Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra 14389 Ciudad de México Mexico
| | - A Almaguer-Flores
- División de Estudios de Posgrado e Investigación, Facultad de Odontología, Universidad Nacional Autónoma de México 04510 Ciudad de México Mexico
| | - V I García
- División de Estudios de Posgrado e Investigación, Facultad de Odontología, Universidad Nacional Autónoma de México 04510 Ciudad de México Mexico
| | - R Esparza
- Centro de Física Aplicada y Tecnología Avanzada, Universidad Nacional Autónoma de México Boulevard Juriquilla 3001 Santiago de Querétaro 76230 Mexico
| | - G Luna-Bárcenas
- Centro de Investigación y de Estudios Avanzados del IPN 76230 Querétaro Mexico
| | - C Velasquillo
- Unidad de Ingeniería de Tejidos, Terapia Celular y Medicina Regenerativa, Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra 14389 Ciudad de México Mexico
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2
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Guo X, Zhang Z, Liu Z, Huang H, Zhang C, Rao H. Improved Proton Conductivity of Chitosan-Based Composite Proton Exchange Membrane Reinforced by Modified GO Inorganic Nanofillers. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:1217. [PMID: 39057893 PMCID: PMC11280275 DOI: 10.3390/nano14141217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2024] [Revised: 06/20/2024] [Accepted: 07/12/2024] [Indexed: 07/28/2024]
Abstract
Non-fluorinated chitosan-based proton exchange membranes (PEMs) have been attracting considerable interest due to their environmental friendliness and relatively low cost. However, low proton conductivity and poor physicochemical properties have limited their application in fuel cells. In this work, a reinforced nanofiller (sulfonated CS/GO, S-CS/GO) is accomplished, for the first time, via a facile amidation and sulfonation reaction. Novel chitosan-based composite PEMs are successfully constructed by the incorporation of the nanofiller into the chitosan matrix. Additionally, the effects of the type and amount of the nanofillers on physicochemical and electrochemical properties are further investigated. It is demonstrated that the chitosan-based composite PEMs incorporating an appropriate amount of the nanofillers (9 wt.%) exhibit good membrane-forming ability, physicochemical properties, improved proton conductivity, and low methanol permeability even under a high temperature and low humidity environment. When the incorporated amounts of S-CS/GO are 9 wt.%, the proton conductivity of the composite PEMs was up to 0.032 S/cm but methanol permeability was decreased to 1.42 × 10-7 cm2/s. Compared to a pristine CS membrane, the tensile strength of the composite membrane is improved by 98% and the methanol permeability is reduced by 51%.
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Affiliation(s)
- Xinrui Guo
- College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, China; (X.G.); (Z.Z.); (Z.L.); (H.H.)
| | - Zhongxin Zhang
- College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, China; (X.G.); (Z.Z.); (Z.L.); (H.H.)
| | - Zhanyan Liu
- College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, China; (X.G.); (Z.Z.); (Z.L.); (H.H.)
| | - Hui Huang
- College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, China; (X.G.); (Z.Z.); (Z.L.); (H.H.)
| | - Chunlei Zhang
- The First Affiliated Hospital of Jinan University, Guangzhou 510632, China;
| | - Huaxin Rao
- College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, China; (X.G.); (Z.Z.); (Z.L.); (H.H.)
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3
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Pieklarz K, Galita G, Majsterek I, Owczarz P, Modrzejewska Z. Nanoarchitectonics and Biological Properties of Nanocomposite Thermosensitive Chitosan Hydrogels Obtained with the Use of Uridine 5'-Monophosphate Disodium Salt. Int J Mol Sci 2024; 25:5989. [PMID: 38892176 PMCID: PMC11172958 DOI: 10.3390/ijms25115989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2024] [Revised: 05/26/2024] [Accepted: 05/28/2024] [Indexed: 06/21/2024] Open
Abstract
Currently, an important group of biomaterials used in the research in the field of tissue engineering is thermosensitive chitosan hydrogels. Their main advantage is the possibility of introducing their precursors (sols) into the implantation site using a minimally invasive method-by injection. In this publication, the results of studies on the new chitosan structures in the form of thermosensitive hydrogels containing graphene oxide as a nanofiller are presented. These systems were prepared from chitosan lactate and chitosan chloride solutions with the use of a salt of pyrimidine nucleotide-uridine 5'-monophosphate disodium salt-as the cross-linking agent. In order to perform the characterization of the developed hydrogels, the sol-gel transition temperature of the colloidal systems was first determined based on rheological measurements. The hydrogels were also analyzed using FTIR spectroscopy and SEM. Biological studies assessed the cytotoxicity (resazurin assay) and genotoxicity (alkaline version of the comet assay) of the nanocomposite chitosan hydrogels against normal human BJ fibroblasts. The conducted research allowed us to conclude that the developed hydrogels containing graphene oxide are an attractive material for potential use as scaffolds for the regeneration of damaged tissues.
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Affiliation(s)
- Katarzyna Pieklarz
- Department of Environmental Engineering, Faculty of Process and Environmental Engineering, Lodz University of Technology, 93-005 Lodz, Poland
| | - Grzegorz Galita
- Department of Clinical Chemistry and Biochemistry, Medical University of Lodz, 92-215 Lodz, Poland; (G.G.); (I.M.)
| | - Ireneusz Majsterek
- Department of Clinical Chemistry and Biochemistry, Medical University of Lodz, 92-215 Lodz, Poland; (G.G.); (I.M.)
| | - Piotr Owczarz
- Department of Chemical Engineering, Faculty of Process and Environmental Engineering, Lodz University of Technology, 93-005 Lodz, Poland;
| | - Zofia Modrzejewska
- Department of Environmental Engineering, Faculty of Process and Environmental Engineering, Lodz University of Technology, 93-005 Lodz, Poland
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Erol ÜH, Güncüm E, Işıklan N. Development of chitosan-graphene oxide blend nanoparticles for controlled flurbiprofen delivery. Int J Biol Macromol 2023; 246:125627. [PMID: 37406912 DOI: 10.1016/j.ijbiomac.2023.125627] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 06/09/2023] [Accepted: 06/28/2023] [Indexed: 07/07/2023]
Abstract
The use of natural polymeric nanoparticles (Nps) as drug carriers is a highly promising area of research in the field of drug delivery systems because of their high efficiency. In this study, flurbiprofen (FB) loaded chitosan-graphene oxide (CS-GO) blend Nps were synthesized as a controlled delivery system using the emulsion method. The crystalline, molecular, and morphological structures of the prepared CS-GO Nps were characterized using a variety of analytical methods, including Fourier transform infrared (FT-IR) spectroscopy, differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), X-Ray diffractometry (XRD), scanning electron microscopy (SEM), and atomic force microscopy (AFM). It was found that the introduction of GO into the CS nanoparticle formulation increased its thermal stability. The range of the average particle size was between 362 ± 5.06 and 718 ± 2.21 nm, with negative zeta potential values between -7.67 ± 4.16 and - 27.93 ± 2.26 mV. The effects of the CS/GO ratio, the FB/polymer ratio, the amount of span 80, and the cross-linker concentration were assessed on FB release profiles. In vitro release studies displayed a two-stage release behaviour with a fast initial release of the FB, followed by sustained and extended release, and the incorporation of GO into the CS Nps made the FB release more sustained and controlled manner. Besides, the cytotoxicity test of the FB-loaded CS-GO Nps was studied through MTT assay, and it was found that they were biocompatible. Based on these findings, it can be inferred that the prepared CS-GO Nps might be a promising candidate drug carrier system for FB.
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Affiliation(s)
- Ümit Haydar Erol
- Department of Chemistry, Faculty of Arts and Sciences, Kırıkkale University, Yahşihan, 71450, Kırıkkale, Turkey; Advanced Technology Application and Research Center, Kilis 7 Aralık University, 79000 Kilis, Turkey
| | - Enes Güncüm
- Department of Pharmacology and Toxicology, Faculty of Veterinary Medicine, Kırıkkale University, 71450 Yahşihan, Kırıkkale, Turkey
| | - Nuran Işıklan
- Department of Chemistry, Faculty of Arts and Sciences, Kırıkkale University, Yahşihan, 71450, Kırıkkale, Turkey.
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Purcea Lopes PM, Moldovan D, Fechete R, Mare L, Barbu-Tudoran L, Sechel N, Popescu V. Characterization of a Graphene Oxide-Reinforced Whey Hydrogel as an Eco-Friendly Absorbent for Food Packaging. Gels 2023; 9:gels9040298. [PMID: 37102911 PMCID: PMC10138084 DOI: 10.3390/gels9040298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 03/21/2023] [Accepted: 03/28/2023] [Indexed: 04/05/2023] Open
Abstract
This study presents a structural analysis of a whey and gelatin-based hydrogel reinforced with graphene oxide (GO) by ultraviolet and visible (UV-VIS) spectroscopy, Fourier transform infrared spectroscopy (FT-IR), and X-ray diffraction (XRD). The results revealed barrier properties in the UV range for the reference sample (containing no graphene oxide) and the samples with minimal GO content of 0.66×10−3% and 3.33×10−3%, respectively, in the UV-VIS and near-IR range; for the samples with higher GO content, this was 6.67×10−3% and 33.33×10−3% as an effect of the introduction of GO into the hydrogel composite. The changes in the position of diffraction angles 2θ from the X-ray diffraction patterns of GO-reinforced hydrogels indicated a decrease in the distances between the turns of the protein helix structure due to the GO cross-linking effect. Transmission electron spectroscopy (TEM) was used for GO, whilst scanning electron microscopy (SEM) was used for the composite characterization. A novel technique for investigating the swelling rate was presented by performing electrical conductivity measurements, the results of which led to the identification of a potential hydrogel with sensor properties.
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Affiliation(s)
- Pompilia Mioara Purcea Lopes
- Physics and Chemistry Department, Technical University of Cluj-Napoca, 28 Memorandumului Str., 400114 Cluj-Napoca, Romania
| | - Dumitrita Moldovan
- Physics and Chemistry Department, Technical University of Cluj-Napoca, 28 Memorandumului Str., 400114 Cluj-Napoca, Romania
| | - Radu Fechete
- Physics and Chemistry Department, Technical University of Cluj-Napoca, 28 Memorandumului Str., 400114 Cluj-Napoca, Romania
| | - Liviu Mare
- Physics and Chemistry Department, Technical University of Cluj-Napoca, 28 Memorandumului Str., 400114 Cluj-Napoca, Romania
| | - Lucian Barbu-Tudoran
- Electron Microscopy Center, Faculty of Biology and Geology, Babes-Bolyai University of Cluj-Napoca, 1 M. Kogalniceanu Street, 400347 Cluj-Napoca, Romania
| | - Niculina Sechel
- Materials Science and Engineering Department, Technical University of Cluj-Napoca, 103-105 Muncii Avenue, 400641 Cluj-Napoca, Romania
| | - Violeta Popescu
- Physics and Chemistry Department, Technical University of Cluj-Napoca, 28 Memorandumului Str., 400114 Cluj-Napoca, Romania
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6
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Feng W, Wang Z. Shear-thinning and self-healing chitosan-graphene oxide hydrogel for hemostasis and wound healing. Carbohydr Polym 2022; 294:119824. [PMID: 35868773 DOI: 10.1016/j.carbpol.2022.119824] [Citation(s) in RCA: 49] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Revised: 05/31/2022] [Accepted: 06/30/2022] [Indexed: 01/12/2023]
Abstract
Hydrogels with injectability, self-healing ability and adhesiveness have great potential for hemostasis and full-thickness skin wound repair, which are usually fabricated by multistep chemical synthesis and the use of organic solvents and catalyst. Herein, we report an injectable and self-healing hydrogel facilely prepared through one-pot heating of chitosan and graphene oxide mixture solution, without any pollutant and waste generated. The dynamic reversible breakage and recombination of noncovalent bonds between chitosan and graphene oxide endows the hydrogel injectability and self-healing ability. In addition, the mechanical and rheological properties of the hydrogels can be controlled by varying the dosage of graphene oxide. Meanwhile, hydrogels exhibited good adhesiveness and hemocompatibility. Finally, in vivo experiments in a rat liver bleeding model and full-thickness skin defect model verified the outstanding hemostatic and wound healing capability of the hydrogels, indicating the promising future for use as wound dressing.
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Affiliation(s)
- Wenjun Feng
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, Zhejiang Province 310027, China
| | - Zhengke Wang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, Zhejiang Province 310027, China.
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7
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Rapisarda M, Meo M. Multifunctional Thermal, Acoustic, and Piezoresistive Properties of In Situ-Modified Composite Aerogels with Graphene Oxide as the Main Phase. ACS APPLIED MATERIALS & INTERFACES 2022; 14:43646-43655. [PMID: 36121008 PMCID: PMC9523609 DOI: 10.1021/acsami.2c08042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Accepted: 09/07/2022] [Indexed: 06/15/2023]
Abstract
Automotive and aerospace industries require advanced materials capable of multifunctional abilities while guaranteeing limited weight and volume and simple processing. Cellular materials such as graphene-based aerogels represent a promising solution. In this study, chemical modification approaches of graphene oxide and polyvinyl alcohol (GOP) aerogels are presented. The combination of a plasticizing agent, glycerol, and a cross-linking agent, glutaraldehyde, is exploited to obtain a mechanically balanced and robust cellular structure. Modified GOP aerogels show high elastic resilience (energy loss coefficient of 29% and compressive strength of 5 kPa at 30% strain, after the 10th compression cycle), low thermal conductivity (0.0424 W mK-1), and high sound absorption (average coefficient of 0.72 between 500 and 1500 Hz) while maintaining a low density of 6.51 kg m-3 with a maximum thickness of 25 mm. Moreover, chemically reduced GOP (rGOP) aerogels are also synthesized. They are characterized by the additional feature of piezoresistive behavior, with only a marginal impact on the other properties. These results show that modified GOP and rGOP aerogels are promising candidates for the fabrication of multifunctional structures to be applied in advanced engineering applications.
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8
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Chitosan-Gelatin Films: Plasticizers/Nanofillers Affect Chain Interactions and Material Properties in Different Ways. Polymers (Basel) 2022; 14:polym14183797. [PMID: 36145942 PMCID: PMC9505206 DOI: 10.3390/polym14183797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2022] [Revised: 09/02/2022] [Accepted: 09/06/2022] [Indexed: 11/17/2022] Open
Abstract
Biopolymers, which are biodegradable and inherently functional, have high potential for specialized applications (e.g., disposable and transient systems and biomedical treatment). For this, it is important to create composite materials with precisely defined chain interactions and tailored properties. This work shows that for a chitosan–gelatin material, both glycerol and isosorbide are effective plasticizers, but isosorbide could additionally disrupt the polyelectrolyte complexation (PEC) between the two biopolymers, which greatly impacts the glass transition temperature (Tg), mechanical properties, and water absorption. While glycerol-plasticized samples without nanofiller or with graphene oxide (GO) showed minimal water uptake, the addition of isosorbide and/or montmorillonite (MMT) made the materials hydrolytically unstable, likely due to disrupted PEC. However, these samples showed an opposite trend in surface hydrophilicity, which means surface chemistry is controlled differently from chain structure. This work highlights different mechanisms that control the different properties of dual-biopolymer systems and provides an updated definition of biopolymer plasticization, and thus could provide important knowledge for the future design of biopolymer composite materials with tailored surface hydrophilicity, overall hygroscopicity, and mechanical properties that meet specific application needs.
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9
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Suo L, Xue Z, Wang P, Wu H, Chen Y, Shen J. Improvement of osteogenic properties using a 3D-printed graphene oxide/hyaluronic acid/chitosan composite scaffold. J BIOACT COMPAT POL 2022. [DOI: 10.1177/08839115221104072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Oral and maxillofacial tumors, trauma and infections are the main causes of jaw defects, whose clinical treatment is very complicated. With the development of biological tissue engineering, many biological materials have been widely used in various fields of stomatology, and they play a very important role in the repair and replacement of maxillofacial bone defects. In this study, we intended to prepare a graphene oxide/hyaluronic acid/chitosan (GO/HA/CS) composite hydrogel with different mass ratios of GO: 0.1% (0.1% GO/HA/CS), 0.25% (0.25% GO/HA/CS), 0.5% (0.5% GO/HA/CS), and 1% (1% GO/HA/CS), prepare it into a multilayered and stable composite scaffold through 3D-printing technology, observe the surface morphology of the composite scaffold through scanning electron microscopy (SEM), and then test its physical and chemical properties, mechanical properties, water swelling rate, in vitro degradation and other material properties. Moreover, the biological performance of the GO/HA/CS composite scaffold was studied through experiments, such as cell morphology observation, cell adhesion, cell proliferation, and live-dead cell staining. The results showed that through chemical cross-linking and 3D-printing technology, a porous (pore size: 450–580 μm) and multilayered GO/HA/CS biological scaffold could be successfully constructed, and its surface was an interconnected microporous structure, and the porosity decreased (94%−40%) gradually with the increase of GO. Meanwhile, with the change in GO concentration, some mechanical properties of the scaffold could be improved, such as water swelling rate, degradation rate, and elastic modulus. In addition, the composite scaffold with the appropriate amount of GO had almost no cytotoxicity and could promote cell growth and proliferation, especially 0.25% GO/HA/CS composite scaffold. Consequently, the 0.25% GO/HA/CS composite scaffold had excellent biological material properties and good biocompatibility with osteoblasts, which may provide a new idea for the repair of jaw defects.
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Affiliation(s)
- Lai Suo
- Department of International VIP Dental Clinic, Tianjin Stomatological Hospital, School of Medicine, Nankai University, Tianjin, China
| | - Zhijun Xue
- Department II of Endodontics, Tianjin Stomatological Hospital, School of Medicine, Nankai University, Tianjin, China
| | - Puyu Wang
- Department II of Endodontics, Tianjin Stomatological Hospital, School of Medicine, Nankai University, Tianjin, China
| | - Hongshan Wu
- School of Medicine, Nankai University, Tianjin, China
| | - Yao Chen
- Department II of Endodontics, Tianjin Stomatological Hospital, School of Medicine, Nankai University, Tianjin, China
| | - Jing Shen
- Department of International VIP Dental Clinic, Tianjin Stomatological Hospital, School of Medicine, Nankai University, Tianjin, China
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Abstract
Chitosan (CS) and graphene oxide (GO) nanocomposites have received wide attention in biomedical fields due to the synergistic effect between CS which has excellent biological characteristics and GO which owns great physicochemical, mechanical, and optical properties. Nanocomposites based on CS and GO can be fabricated into a variety of forms, such as nanoparticles, hydrogels, scaffolds, films, and nanofibers. Thanks to the ease of functionalization, the performance of these nanocomposites in different forms can be further improved by introducing other functional polymers, nanoparticles, or growth factors. With this background, the current review summarizes the latest developments of CS-GO nanocomposites in different forms and compositions in biomedical applications including drug and biomacromolecules delivery, wound healing, bone tissue engineering, and biosensors. Future improving directions and challenges for clinical practice are proposed as well.
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Affiliation(s)
- Wenjun Feng
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Zhengke Wang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
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11
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Sarno M, Scudieri C, Ponticorvo E, Baldino L, Cardea S, Reverchon E. High performance PVDF HFP_RuO2 supercapacitors production by supercritical drying. J Supercrit Fluids 2021. [DOI: 10.1016/j.supflu.2021.105323] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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12
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Ozge Kurt, Hande Celebi. Chitosan/Graphene Oxide/Nanocellulose Composites for Removal of Cu(II) and Pb(II) Ions in Aqueous Solution. POLYMER SCIENCE SERIES A 2021. [DOI: 10.1134/s0965545x21050084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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13
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Han Lyn F, Tan CP, Zawawi R, Nur Hanani Z. Physicochemical properties of chitosan/ graphene oxide composite films and their effects on storage stability of palm-oil based margarine. Food Hydrocoll 2021. [DOI: 10.1016/j.foodhyd.2021.106707] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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14
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Krystyjan M, Khachatryan G, Grabacka M, Krzan M, Witczak M, Grzyb J, Woszczak L. Physicochemical, Bacteriostatic, and Biological Properties of Starch/Chitosan Polymer Composites Modified by Graphene Oxide, Designed as New Bionanomaterials. Polymers (Basel) 2021; 13:2327. [PMID: 34301083 PMCID: PMC8309611 DOI: 10.3390/polym13142327] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 07/12/2021] [Accepted: 07/12/2021] [Indexed: 02/07/2023] Open
Abstract
The application of natural polymer matrices as medical device components or food packaging materials has gained a considerable popularity in recent years, this has occurred in response to the increasing plastic pollution hazard. Currently, constant progress is being made in designing two-component or three-component systems that combine natural materials which help to achieve a quality comparable to the purely synthetic counterparts. This study describes a green synthesis preparation of new bionanocomposites consisting of starch/chitosan/graphene oxide (GO), that possess improved biological activities; namely, good tolerability by human cells with concomitant antimicrobial activity. The structural and morphological properties of bionanocomposites were analyzed using the following techniques: dynamic light scattering, scanning and transmission electron microscopy, wettability and free surface energy determination, and Fourier transform infrared spectroscopy. The study confirmed the homogenous distribution of GO layers within the starch/chitosan matrix and their large particle size. The interactions among the components were stronger in thin films. Additionally, differential scanning calorimetry analysis, UV-vis spectroscopy, surface colour measurements, transparency, water content, solubility, and swelling degree of composites were also performed. The mechanical parameters, such as tensile strength and elongation at break (EAB) were measured in order to characterise the functional properties of obtained nanocomposites. The GO additive altered the thermal features of the composites and decreased their brightness. The EAB of composite was improved by the introduction of GO. Importantly, cell-based analyses revealed no toxic effect of the composites on HaCat keratinocytes and HepG2 hepatoma cells, although a pronounced bacteriostatic effect against various strains of pathogenic bacteria was observed. In conclusion, the starch/chitosan/GO nanocomposites reveal numerous useful physicochemical and biological features, which make them a promising alternative for purely synthetic materials.
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Affiliation(s)
- Magdalena Krystyjan
- Faculty of Food Technology, University of Agriculture in Krakow, Balicka Street 122, 30-149 Krakow, Poland; (G.K.); (M.G.); (M.W.); (L.W.)
| | - Gohar Khachatryan
- Faculty of Food Technology, University of Agriculture in Krakow, Balicka Street 122, 30-149 Krakow, Poland; (G.K.); (M.G.); (M.W.); (L.W.)
| | - Maja Grabacka
- Faculty of Food Technology, University of Agriculture in Krakow, Balicka Street 122, 30-149 Krakow, Poland; (G.K.); (M.G.); (M.W.); (L.W.)
| | - Marcel Krzan
- Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, 31-120 Krakow, Poland;
| | - Mariusz Witczak
- Faculty of Food Technology, University of Agriculture in Krakow, Balicka Street 122, 30-149 Krakow, Poland; (G.K.); (M.G.); (M.W.); (L.W.)
| | - Jacek Grzyb
- Faculty of Agriculture and Economics, University of Agriculture in Krakow, Mickiewicza 24/28, 30-059 Krakow, Poland;
| | - Liliana Woszczak
- Faculty of Food Technology, University of Agriculture in Krakow, Balicka Street 122, 30-149 Krakow, Poland; (G.K.); (M.G.); (M.W.); (L.W.)
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15
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Han Lyn F, Tan CP, Zawawi RM, Nur Hanani ZA. Enhancing the mechanical and barrier properties of chitosan/graphene oxide composite films using trisodium citrate and sodium tripolyphosphate crosslinkers. J Appl Polym Sci 2021. [DOI: 10.1002/app.50618] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Foong Han Lyn
- Department of Food Technology, Faculty of Food Science and Technology Universiti Putra Malaysia Seri Kembangan Malaysia
| | - Chin Ping Tan
- Department of Food Technology, Faculty of Food Science and Technology Universiti Putra Malaysia Seri Kembangan Malaysia
| | - Ruzniza Mohd Zawawi
- Department of Chemistry, Faculty of Science Universiti Putra Malaysia Seri Kembangan Malaysia
| | - Zainal Abedin Nur Hanani
- Department of Food Technology, Faculty of Food Science and Technology Universiti Putra Malaysia Seri Kembangan Malaysia
- Halal Products Research Institute Universiti Putra Malaysia Seri Kembangan Malaysia
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16
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From Magneto-Dielectric Biocomposite Films to Microstrip Antenna Devices. JOURNAL OF COMPOSITES SCIENCE 2020. [DOI: 10.3390/jcs4040144] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Magneto-dielectric composites are interesting advanced materials principally due to their potential applications in electronic fields, such as in microstrip antennas substrates. In this work, we developed superparamagnetic polymer-based films using the biopolymeric matrices chitosan (Ch), cellulose (BC) and collagen (Col). For this proposal, we synthesized superparamagnetic iron oxide nanoparticles (SPIONs) functionalized with polyethyleneimine with a cheap method using sonochemistry. Further, the SPIONs were dispersed into polymer matrices and the composites were evaluated regarding morphology, thermal, dielectric and magnetic properties and their application as microstrip antennas substrates. Microscopically, all tested films presented a uniform dispersion profile, principally due to polyethyleneimine coating. Under an operating frequency (fo) of 4.45 GHz, Ch, BC and Col-based SPION substrates showed moderate dielectric constant (ε′) values in the range of 5.2–8.3, 6.7–8.4 and 5.9–9.1, respectively. Furthermore, the prepared films showed no hysteresis loop, thereby providing evidence of superparamagnetism. The microstrip antennas showed considerable bandwidths (3.37–6.34%) and a return loss lower than −10 dB. Besides, the fo were modulated according to the addition of SPIONs, varying in the range of 4.69–5.55, 4.63–5.18 and 4.93–5.44 GHz, for Ch, BC and Col-based substrates, respectively. Moreover, considering best modulation of ε′ and fo, the Ch-based SPION film showed the most suitable profile as a microstrip antenna substrate.
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Cobos M, De-La-Pinta I, Quindós G, Fernández MJ, Fernández MD. Synthesis, Physical, Mechanical and Antibacterial Properties of Nanocomposites Based on Poly(vinyl alcohol)/Graphene Oxide-Silver Nanoparticles. Polymers (Basel) 2020; 12:E723. [PMID: 32214025 PMCID: PMC7183062 DOI: 10.3390/polym12030723] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Revised: 03/16/2020] [Accepted: 03/17/2020] [Indexed: 01/03/2023] Open
Abstract
The design of new materials with antimicrobial properties has emerged in response to the need for preventing and controlling the growth of pathogenic microorganisms without the use of antibiotics. In this study, partially reduced graphene oxide decorated with silver nanoparticles (GO-AgNPs) was incorporated as a reinforcing filler with antibacterial properties to poly(vinyl alcohol) (PVA) for preparation of poly(vinyl alcohol)/graphene oxide-silver nanoparticles nanocomposites (PVA/GO-AgNPs). AgNPs, spherical in shape and with an average size of 3.1 nm, were uniformly anchored on the partially reduced GO surface. PVA/GO-AgNPs nanocomposites showed exfoliated structures with improved thermal stability, tensile properties and water resistance compared to neat PVA. The glass transition and crystallization temperatures of the polymer matrix increased with the incorporation of the hybrid. The nanocomposites displayed antibacterial activity against Staphylococcus aureus and Escherichia coli in a filler content- and time-dependent manner. S. aureus showed higher susceptibility to PVA/GO-AgNPs films than E. coli. Inhibitory activity was higher when bacterial cells were in contact with nanocomposite films than when in contact with leachates coming out of the films. GO-AgNPs based PVA nanocomposites could find application as wound dressings for wound healing and infection prevention.
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Affiliation(s)
- Mónica Cobos
- Department of Polymer Science and Technology, Faculty of Chemistry, University of the Basque Country (UPV/EHU), Paseo Manuel Lardizábal 3, 20018 San Sebastián, Spain; (M.C.); (M.J.F.)
| | - Iker De-La-Pinta
- Department of Immunology, Microbiology and Parasitology, Faculty of Medicine and Nursing, University of the Basque Country (UPV/EHU), Barrio Sarriena s/n, 48940 Leioa, Spain; (I.D.-L.-P.); (G.Q.)
| | - Guillermo Quindós
- Department of Immunology, Microbiology and Parasitology, Faculty of Medicine and Nursing, University of the Basque Country (UPV/EHU), Barrio Sarriena s/n, 48940 Leioa, Spain; (I.D.-L.-P.); (G.Q.)
| | - María Jesús Fernández
- Department of Polymer Science and Technology, Faculty of Chemistry, University of the Basque Country (UPV/EHU), Paseo Manuel Lardizábal 3, 20018 San Sebastián, Spain; (M.C.); (M.J.F.)
| | - María Dolores Fernández
- Department of Polymer Science and Technology, Faculty of Chemistry, University of the Basque Country (UPV/EHU), Paseo Manuel Lardizábal 3, 20018 San Sebastián, Spain; (M.C.); (M.J.F.)
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18
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Wrońska N, Anouar A, El Achaby M, Zawadzka K, Kędzierska M, Miłowska K, Katir N, Draoui K, Różalska S, Piwoński I, Bryszewska M, El Kadib A, Lisowska K. Chitosan-Functionalized Graphene Nanocomposite Films: Interfacial Interplay and Biological Activity. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E998. [PMID: 32102202 PMCID: PMC7078879 DOI: 10.3390/ma13040998] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 02/14/2020] [Accepted: 02/19/2020] [Indexed: 02/07/2023]
Abstract
Graphene oxide (GO) has recently captured tremendous attention, but only few functionalized graphene derivatives were used as fillers, and insightful studies dealing with the thermal, mechanical, and biological effects of graphene surface functionalization are currently missing in the literature. Herein, reduced graphene oxide (rGO), phosphorylated graphene oxide (PGO), and trimethylsilylated graphene oxide (SiMe3GO) were prepared by the post-modification of GO. The electrostatic interactions of these fillers with chitosan afforded colloidal solutions that provide, after water evaporation, transparent and flexible chitosan-modified graphene films. All reinforced chitosan-graphene films displayed improved mechanical, thermal, and antibacterial (S. aureus, E. coli) properties compared to native chitosan films. Hemolysis, intracellular catalase activity, and hemoglobin oxidation were also observed for these materials. This study shows that graphene functionalization provides a handle for tuning the properties of graphene-reinforced nanocomposite films and customizing their functionalities.
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Affiliation(s)
- Natalia Wrońska
- Department of Industrial Microbiology and Biotechnology, Faculty of Biology and Environmental Protection, University of Lodz, 12/16 Banacha Street, 90-236 Lodz, Poland; (N.W.); (K.Z.); (S.R.)
| | - Aicha Anouar
- Euromed Research Center, Engineering Division, Euro-Med University of Fes (UEMF), Route de Meknes, Rond-point de Bensouda, Fès 30070, Morocco; (A.A.); (N.K.)
- Materials and Interfacial Systems Laboratory (MSI), Faculty of Sciences, Abdel Malek Essaadi University, B.P. 2121, M’hannech II, Tetouan 930000, Morocco;
| | - Mounir El Achaby
- Materials Science and Nano-engineering (MSN) Department, Mohammed VI Polytechnic University (UM6P), Lot 660–Hay Moulay Rachid, Benguerir 43150, Morocco;
| | - Katarzyna Zawadzka
- Department of Industrial Microbiology and Biotechnology, Faculty of Biology and Environmental Protection, University of Lodz, 12/16 Banacha Street, 90-236 Lodz, Poland; (N.W.); (K.Z.); (S.R.)
| | - Marta Kędzierska
- Department of General Biophysics, Faculty of Biology and Environmental Protection, University of Lodz, 141/143 Pomorska Street, 90-236 Lodz, Poland; (M.K.); (K.M.); (M.B.)
| | - Katarzyna Miłowska
- Department of General Biophysics, Faculty of Biology and Environmental Protection, University of Lodz, 141/143 Pomorska Street, 90-236 Lodz, Poland; (M.K.); (K.M.); (M.B.)
| | - Nadia Katir
- Euromed Research Center, Engineering Division, Euro-Med University of Fes (UEMF), Route de Meknes, Rond-point de Bensouda, Fès 30070, Morocco; (A.A.); (N.K.)
| | - Khalid Draoui
- Materials and Interfacial Systems Laboratory (MSI), Faculty of Sciences, Abdel Malek Essaadi University, B.P. 2121, M’hannech II, Tetouan 930000, Morocco;
| | - Sylwia Różalska
- Department of Industrial Microbiology and Biotechnology, Faculty of Biology and Environmental Protection, University of Lodz, 12/16 Banacha Street, 90-236 Lodz, Poland; (N.W.); (K.Z.); (S.R.)
| | - Ireneusz Piwoński
- Department of Materials Technology and Chemistry, Faculty of Chemistry, University of Lodz, 163 Pomorska Street, 90-236 Lodz, Poland;
| | - Maria Bryszewska
- Department of General Biophysics, Faculty of Biology and Environmental Protection, University of Lodz, 141/143 Pomorska Street, 90-236 Lodz, Poland; (M.K.); (K.M.); (M.B.)
| | - Abdelkrim El Kadib
- Euromed Research Center, Engineering Division, Euro-Med University of Fes (UEMF), Route de Meknes, Rond-point de Bensouda, Fès 30070, Morocco; (A.A.); (N.K.)
| | - Katarzyna Lisowska
- Department of Industrial Microbiology and Biotechnology, Faculty of Biology and Environmental Protection, University of Lodz, 12/16 Banacha Street, 90-236 Lodz, Poland; (N.W.); (K.Z.); (S.R.)
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Cobos M, De-La-Pinta I, Quindós G, Fernández MJ, Fernández MD. Graphene Oxide-Silver Nanoparticle Nanohybrids: Synthesis, Characterization, and Antimicrobial Properties. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E376. [PMID: 32098083 PMCID: PMC7075288 DOI: 10.3390/nano10020376] [Citation(s) in RCA: 68] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Revised: 02/17/2020] [Accepted: 02/19/2020] [Indexed: 12/12/2022]
Abstract
Drug resistance of pathogenic microorganisms has become a global public health problem, which has prompted the development of new materials with antimicrobial properties. In this context, antimicrobial nanohybrids are an alternative due to their synergistic properties. In this study, we used an environmentally friendly one-step approach to synthesize graphene oxide (GO) decorated with silver nanoparticles (GO-AgNPs). By this process, spherical AgNPs of average size less than 4 nm homogeneously distributed on the surface of the partially reduced GO can be generated in the absence of any stabilizing agent, only with ascorbic acid (L-AA) as a reducing agent and AgNO3 as a metal precursor. The size of the AgNPs can be controlled by the AgNO3 concentration and temperature. Smaller AgNPs are obtained at lower concentrations of the silver precursor and lower temperatures. The antimicrobial properties of nanohybrids against Gram-negative bacteria Escherichia coli and Pseudomonas aeruginosa, Gram-positive Staphylococcus aureus, and the yeast Candida albicans were found to be concentration- and time-dependent. C. albicans and S. aureus showed the highest susceptibility to GO-AgNPs. These nanohybrids can be used as nanofillers in polymer nanocomposites to develop materials with antimicrobial activity for applications in different areas, and another potential application could be cancer therapeutic agents.
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Affiliation(s)
- Mónica Cobos
- Department of Polymer Science and Technology, Faculty of Chemistry, University of the Basque Country (UPV/EHU), Paseo Manuel Lardizábal 3, 20018 San Sebastián, Spain; (M.C.); (M.J.F.)
| | - Iker De-La-Pinta
- Department of Immunology, Microbiology and Parasitology, Faculty of Medicine and Nursing, University of the Basque Country (UPV/EHU), Barrio Sarriena s/n, Leioa 48940, Spain; (I.D.-L.-P.); (G.Q.)
| | - Guillermo Quindós
- Department of Immunology, Microbiology and Parasitology, Faculty of Medicine and Nursing, University of the Basque Country (UPV/EHU), Barrio Sarriena s/n, Leioa 48940, Spain; (I.D.-L.-P.); (G.Q.)
| | - M. Jesús Fernández
- Department of Polymer Science and Technology, Faculty of Chemistry, University of the Basque Country (UPV/EHU), Paseo Manuel Lardizábal 3, 20018 San Sebastián, Spain; (M.C.); (M.J.F.)
| | - M. Dolores Fernández
- Department of Polymer Science and Technology, Faculty of Chemistry, University of the Basque Country (UPV/EHU), Paseo Manuel Lardizábal 3, 20018 San Sebastián, Spain; (M.C.); (M.J.F.)
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20
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Wang H, Zhang M, He X, Du T, Wang Y, Li Y, Hao T. Facile prepared ball-like TiO 2 at GO composites for oxytetracycline removal under solar and visible lights. WATER RESEARCH 2019; 160:197-205. [PMID: 31151001 DOI: 10.1016/j.watres.2019.05.073] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Revised: 05/21/2019] [Accepted: 05/22/2019] [Indexed: 05/27/2023]
Abstract
With the widespread use of oxytetracycline (OTC), residual OTCs have been detected in natural surface waters, as well as in water and wastewater treatment systems. Semiconductor photocatalysis has been proven to be a green and high-performing method for the removal of organic contaminants. However, most photocatalysts are only effective when irradiated by UV light. This study explores the efficiency of a new semiconductor photocatalysis method for OTC removal under solar and visible light. To expand the spectral range from the UV to the visible region, a facile prepared ball-like TiO2 at graphene oxide (TiO2@GO) composite, a TiO2-associated catalyst, was synthesized. Chemical characterization indicated that the TiO2@GO has the features of both TiO2 and GO, with the regular TiO2 fiber balls cladded by GO nanosheets. The photocatalytic activity of TiO2@GO composites under solar and visible light was evaluated in terms of OTC degradation. Values of 100% and 90% OTC removal efficiencies were achieved with TiO2@GO at 6 mg/L under solar and visible light irradiation, respectively. The band structure of TiO2@GO expanded the spectral range to full light wavelengths, facilitating formation of a light-induced electron hole (h+), which was identified in this study as the major cause of OTC degradation. The pH and TSS levels (>100 mg/L) were found to have high and low impacts, respectively, on the removal efficiency of OTC, while natural organic matter (NOM) was found to have an insignificant impact. Furthermore, the degradation of OTC with catalysis by TiO2@GO was verified using two real water samples, and averages of 90% and 75% OTC removal efficiencies were achieved under solar and visible light respectively. The results indicate that the synthesized TiO2@GO composites can provide an effective way of removing toxic organic compounds, including OTC, from the water system.
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Affiliation(s)
- Huihui Wang
- College of Environmental Science and Engineering/Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria/Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Nankai University, Tong Yan Road 38, Tianjin, 300350, China
| | - Min Zhang
- College of Environmental Science and Engineering/Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria/Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Nankai University, Tong Yan Road 38, Tianjin, 300350, China
| | - Xizhen He
- College of Environmental Science and Engineering/Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria/Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Nankai University, Tong Yan Road 38, Tianjin, 300350, China
| | - Tingting Du
- College of Environmental Science and Engineering/Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria/Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Nankai University, Tong Yan Road 38, Tianjin, 300350, China
| | - Yingying Wang
- College of Environmental Science and Engineering/Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria/Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Nankai University, Tong Yan Road 38, Tianjin, 300350, China
| | - Yao Li
- College of Environmental Science and Engineering/Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria/Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Nankai University, Tong Yan Road 38, Tianjin, 300350, China.
| | - Tianwei Hao
- Department of Civil and Environmental Engineering, Faculty of Science and Technology, University of Macau, Macau, China.
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21
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Adumitrăchioaie A, Tertiș M, Suciu M, Graur F, Cristea C. A novel immunosensing platform for serotonin detection in complex real samples based on graphene oxide and chitosan. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2019.04.128] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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22
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Cobos M, Fernández MJ, Fernández MD. Graphene Based Poly(Vinyl Alcohol) Nanocomposites Prepared by In Situ Green Reduction of Graphene Oxide by Ascorbic Acid: Influence of Graphene Content and Glycerol Plasticizer on Properties. NANOMATERIALS 2018; 8:nano8121013. [PMID: 30563225 PMCID: PMC6316035 DOI: 10.3390/nano8121013] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Revised: 11/29/2018] [Accepted: 12/04/2018] [Indexed: 11/16/2022]
Abstract
The enhanced properties of polymer nanocomposites as compared with pure polymers are only achieved in the presence of well-dispersed nanofillers and strong interfacial adhesion. In this study, we report the preparation of nanocomposite films based on poly(vinyl alcohol) (PVA) filled with well dispersed graphene sheets (GS) by in situ reduction of graphene oxide (GO) dispersed in PVA solution using ascorbic acid (L-AA) as environmentally friendly reductant. The combined effect of GS content and glycerol as plasticizer on the structure, thermal, mechanical, water absorption, and water barrier properties of PVA/GS nanocomposite films is studied for the first time. Higher glass transition temperature, lower crystallinity, melting, and crystallization temperature, higher mechanical properties, and remarkable improvement in the thermal stability compared to neat PVA are obtained as a result of strong interfacial interactions between GS and PVA by hydrogen bonding. PVA/GS composite film prepared by ex situ process is more brittle than its in situ prepared counterpart. The presence of GS improves the water barrier and water resistance properties of nanocomposite films by decreasing water vapor permeability and water absorption of PVA. This work demonstrates that the tailoring of PVA/GS nanocomposite properties is enabled by controlling GS and glycerol content. The new developed materials, particularly those containing plasticizer, could be potential carriers for transdermal drug delivery.
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Affiliation(s)
- Mónica Cobos
- Department of Polymer Science and Technology. Faculty of Chemistry, University of the Basque Country UPV/EHU, Paseo Manuel Lardizábal 3, 20018 San Sebastián, Spain.
| | - M Jesús Fernández
- Department of Polymer Science and Technology. Faculty of Chemistry, University of the Basque Country UPV/EHU, Paseo Manuel Lardizábal 3, 20018 San Sebastián, Spain.
| | - M Dolores Fernández
- Department of Polymer Science and Technology. Faculty of Chemistry, University of the Basque Country UPV/EHU, Paseo Manuel Lardizábal 3, 20018 San Sebastián, Spain.
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23
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Abdul Khalil HPS, Chong EWN, Owolabi FAT, Asniza M, Tye YY, Rizal S, Nurul Fazita MR, Mohamad Haafiz MK, Nurmiati Z, Paridah MT. Enhancement of basic properties of polysaccharide-based composites with organic and inorganic fillers: A review. J Appl Polym Sci 2018. [DOI: 10.1002/app.47251] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
| | - E. W. N. Chong
- School of Industrial Technology, Universiti Sains Malaysia; 11800 Penang Malaysia
| | - F. A. T. Owolabi
- School of Industrial Technology, Universiti Sains Malaysia; 11800 Penang Malaysia
- Federal Institute of Industrial Research Oshodi; Lagos Nigeria
| | - M. Asniza
- School of Industrial Technology, Universiti Sains Malaysia; 11800 Penang Malaysia
| | - Y. Y. Tye
- School of Industrial Technology, Universiti Sains Malaysia; 11800 Penang Malaysia
| | - S. Rizal
- Department of Mechanical Engineering; Syiah Kuala University; Banda Aceh 23111 Indonesia
| | - M. R. Nurul Fazita
- School of Industrial Technology, Universiti Sains Malaysia; 11800 Penang Malaysia
| | - M. K. Mohamad Haafiz
- School of Industrial Technology, Universiti Sains Malaysia; 11800 Penang Malaysia
| | - Z. Nurmiati
- Department of Civil Engineering; Universitas Sulawesi; Barat 90245 Indonesia
| | - M. T. Paridah
- Institute of Tropical Forestry and Forest Products (INTROP), Universiti Putra Malaysia; 43400 Serdang Selangor Malaysia
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24
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Guo L, Yan H, Chen Z, Liu Q, Feng Y, Ding F, Nie Y. Amino Functionalization of Reduced Graphene Oxide/Tungsten Disulfide Hybrids and Their Bismaleimide Composites with Enhanced Mechanical Properties. Polymers (Basel) 2018; 10:polym10111199. [PMID: 30961124 PMCID: PMC6290598 DOI: 10.3390/polym10111199] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Revised: 10/23/2018] [Accepted: 10/24/2018] [Indexed: 11/16/2022] Open
Abstract
A novel graphene-based nanocomposite particles (NH₂-rGO/WS₂), composed of reduced graphene oxide (rGO) and tungsten disulfide (WS₂) grafted with active amino groups (NH₂-rGO/WS₂), was successfully synthesized by an effective and facile method. NH₂-rGO/WS₂ nanoparticles were then used to fabricate new bismaleimide (BMI) composites (NH₂-rGO/WS₂/BMI) via a casting method. The results demonstrated that a suitable amount of NH₂-rGO/WS₂ nanoparticles significantly improved the mechanical properties of the BMI resin. When the loading of NH₂-rGO/WS₂ was only 0.6 wt %, the impact and flexural strength of the composites increased by 91.3% and 62.6%, respectively, compared to the neat BMI resin. Rare studies have reported such tremendous enhancements on the mechanical properties of the BMI resin with trace amounts of fillers. This is attributable to the unique layered structure of NH₂-rGO/WS₂ nanoparticles, fine interfacial adhesion, and uniform dispersion of NH₂-rGO/WS₂ in the BMI resin. Besides, the thermal gravimetrical analysis (TGA) revealed that the addition of NH₂-rGO/WS₂ could also improve the stability of the composites.
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Affiliation(s)
- Liulong Guo
- Department of Applied Chemistry, School of Natural and Applied Sciences, Northwestern Polytechnical University, Xi'an 710129, China.
| | - Hongxia Yan
- Department of Applied Chemistry, School of Natural and Applied Sciences, Northwestern Polytechnical University, Xi'an 710129, China.
| | - Zhengyan Chen
- Department of Applied Chemistry, School of Natural and Applied Sciences, Northwestern Polytechnical University, Xi'an 710129, China.
| | - Qi Liu
- Department of Applied Chemistry, School of Natural and Applied Sciences, Northwestern Polytechnical University, Xi'an 710129, China.
| | - Yuanbo Feng
- Department of Applied Chemistry, School of Natural and Applied Sciences, Northwestern Polytechnical University, Xi'an 710129, China.
| | - Fan Ding
- Department of Applied Chemistry, School of Natural and Applied Sciences, Northwestern Polytechnical University, Xi'an 710129, China.
| | - Yufeng Nie
- Department of Applied Mathematics, School of Natural and Applied Sciences, Northwestern Polytechnical University, Xi'an 710129, China.
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25
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Graphene Oxide-Gold Nanosheets Containing Chitosan Scaffold Improves Ventricular Contractility and Function After Implantation into Infarcted Heart. Sci Rep 2018; 8:15069. [PMID: 30305684 PMCID: PMC6180127 DOI: 10.1038/s41598-018-33144-0] [Citation(s) in RCA: 68] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Accepted: 09/14/2018] [Indexed: 12/26/2022] Open
Abstract
Abnormal conduction and improper electrical impulse propagation are common in heart after myocardial infarction (MI). The scar tissue is non-conductive therefore the electrical communication between adjacent cardiomyocytes is disrupted. In the current study, we synthesized and characterized a conductive biodegradable scaffold by incorporating graphene oxide gold nanosheets (GO-Au) into a clinically approved natural polymer chitosan (CS). Inclusion of GO-Au nanosheets in CS scaffold displayed two fold increase in electrical conductivity. The scaffold exhibited excellent porous architecture with desired swelling and controlled degradation properties. It also supported cell attachment and growth with no signs of discrete cytotoxicity. In a rat model of MI, in vivo as well as in isolated heart, the scaffold after 5 weeks of implantation showed a significant improvement in QRS interval which was associated with enhanced conduction velocity and contractility in the infarct zone by increasing connexin 43 levels. These results corroborate that implantation of novel conductive polymeric scaffold in the infarcted heart improved the cardiac contractility and restored ventricular function. Therefore, our approach may be useful in planning future strategies to construct clinically relevant conductive polymer patches for cardiac patients with conduction defects.
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26
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Sokolova MP, Smirnov MA, Samarov AA, Bobrova NV, Vorobiov VK, Popova EN, Filippova E, Geydt P, Lahderanta E, Toikka AM. Plasticizing of chitosan films with deep eutectic mixture of malonic acid and choline chloride. Carbohydr Polym 2018; 197:548-557. [PMID: 30007646 DOI: 10.1016/j.carbpol.2018.06.037] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Revised: 06/06/2018] [Accepted: 06/06/2018] [Indexed: 01/27/2023]
Abstract
Chitosan (CS) films containing deep eutectic solvent (DES) based on malonic acid (MA) and choline chloride (ChCl) were successfully prepared by solution casting method by using DES content ranging from 0 to 82 wt%. A strong interaction of CS with the components of DES was demonstrated by analyses of water sorption isotherms, atomic force microscopy and FTIR results. The plasticizing effect of the MA and ChCl mixture on the CS matrix was shown by static bulk mechanical measurements, thermal analysis and quantitative nanomechanical mapping (QNM). Elongation at break increased from 3 to 62% at increase of DES content from 0 to 67 wt%, while further increase of DES content led to the decreasing of maximal elongation. Introduction of DES into CS films led to the appearance of glass transition temperature in the region +2 - -2.3 °C. QNM results indicated homogeneity of the films containing up to 75 wt% of DES.
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Affiliation(s)
- Maria P Sokolova
- Saint Petersburg State University, Universitetsky pr. 26, Peterhof, Saint Petersburg, 198504, Russia; Lappeenranta University of Technology, Department of Physics, Skinnarilankatu 34, Lappeenranta, 53850, Finland.
| | - Michael A Smirnov
- Institute of Macromolecular Compounds, Russian Academy of Sciences, Bolshoy pr. 31, Saint Petersburg, 199004, Russia; ITMO University, Saint Petersburg, 197101, Russia.
| | - Artemiy A Samarov
- Saint Petersburg State University, Universitetsky pr. 26, Peterhof, Saint Petersburg, 198504, Russia.
| | - Natalya V Bobrova
- Institute of Macromolecular Compounds, Russian Academy of Sciences, Bolshoy pr. 31, Saint Petersburg, 199004, Russia.
| | | | - Elena N Popova
- Institute of Macromolecular Compounds, Russian Academy of Sciences, Bolshoy pr. 31, Saint Petersburg, 199004, Russia.
| | - Elizaveta Filippova
- Lappeenranta University of Technology, Department of Physics, Skinnarilankatu 34, Lappeenranta, 53850, Finland.
| | - Pavel Geydt
- Lappeenranta University of Technology, Department of Physics, Skinnarilankatu 34, Lappeenranta, 53850, Finland.
| | - Erkki Lahderanta
- Lappeenranta University of Technology, Department of Physics, Skinnarilankatu 34, Lappeenranta, 53850, Finland.
| | - Alexander M Toikka
- Saint Petersburg State University, Universitetsky pr. 26, Peterhof, Saint Petersburg, 198504, Russia.
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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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Tondwal R, Singh M. Chitosan functionalization with a series of sulfur-containing α-amino acids for the development of drug-binding abilities. J Appl Polym Sci 2017. [DOI: 10.1002/app.46000] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Reena Tondwal
- School of Chemical Sciences; Central University of Gujarat; Gandhinagar 382030 India
| | - Man Singh
- School of Chemical Sciences; Central University of Gujarat; Gandhinagar 382030 India
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