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Li M, Xiao M, Wang Q, Zhang J, Xue X, Zhao J, Zhang W, Lu C. Mechanically Strong and Electrically Conductive Polyethylene Oxide/Few-Layer Graphene/Cellulose Nanofibrils Nanocomposite Films. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:4152. [PMID: 36500775 PMCID: PMC9737188 DOI: 10.3390/nano12234152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 11/21/2022] [Accepted: 11/22/2022] [Indexed: 06/17/2023]
Abstract
In this work, a cellulose nanofibrils (CNFs)/few-layer graphene (FLG) hybrid is mechanically stripped from bamboo pulp and expanded graphene (EG) using a grinder. This strategy is scalable and environmentally friendly for high-efficiency exfoliation and dispersion of graphene in an aqueous medium. The in situ-generated CNFs play a key role in this process, acting as a "green" dispersant. Next, the obtained CNFs-FLG is used as a functional filler in a polyoxyethylene (PEO) matrix. When the composition of CNFs-FLG is 50 wt.%, the resultant PEO/CNFs-FLG nanocomposite film exhibits a Young's modulus of 1.8 GPa and a tensile strength of 25.7 MPa, showing 480% and 260% enhancement as compared to those of the pure PEO film, respectively. Remarkably, the incorporation of CNFs-FLG also provides the nanocomposite films with a stunning electrical conductivity (72.6 S/m). These attractive features make PEO/CNFs-FLG nanocomposite films a promising candidate for future electronic devices.
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Affiliation(s)
- Mei Li
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute at Sichuan University, Chengdu 610065, China
| | - Meijie Xiao
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute at Sichuan University, Chengdu 610065, China
| | - Qunhao Wang
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute at Sichuan University, Chengdu 610065, China
| | - Jian Zhang
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute at Sichuan University, Chengdu 610065, China
| | - Xiaolin Xue
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute at Sichuan University, Chengdu 610065, China
| | - Jiangqi Zhao
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute at Sichuan University, Chengdu 610065, China
| | - Wei Zhang
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute at Sichuan University, Chengdu 610065, China
- Advanced Polymer Materials Research Center of Sichuan University, Shishi 362700, China
| | - Canhui Lu
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute at Sichuan University, Chengdu 610065, China
- Advanced Polymer Materials Research Center of Sichuan University, Shishi 362700, China
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Al‐Bermany E, Chen B. Preparation and characterisation of poly(ethylene glycol)‐adsorbed graphene oxide nanosheets. POLYM INT 2020. [DOI: 10.1002/pi.6140] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Ehssan Al‐Bermany
- Department of Materials Science and Engineering University of Sheffield Sheffield UK
- Department of Physics, College of Education for Pure Sciences University of Babylon Babylon Iraq
| | - Biqiong Chen
- School of Mechanical and Aerospace Engineering Queenʼs University Belfast Belfast UK
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Carrasco-Torres G, Valdés-Madrigal MA, Vásquez-Garzón VR, Baltiérrez-Hoyos R, De la Cruz-Burelo E, Román-Doval R, Valencia-Lazcano AA. Effect of Silk Fibroin on Cell Viability in Electrospun Scaffolds of Polyethylene Oxide. Polymers (Basel) 2019; 11:E451. [PMID: 30960435 PMCID: PMC6473723 DOI: 10.3390/polym11030451] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 02/12/2019] [Accepted: 02/28/2019] [Indexed: 01/06/2023] Open
Abstract
In this study, a coating from electrospun silk fibroin was performed with the aim to modify the surface of breast implants. We evaluated the effect of fibroin on polymeric matrices of poly (ethylene oxide) (PEO) to enhance cell viability, adhesion, and proliferation of HaCaT human keratinocytes to enhance the healing process on breast prosthesis implantation. We electrospun six blends of fibroin and PEO at different concentrations. These scaffolds were characterized by scanning electron microscopy, contact angle measurements, ATR-FTIR spectroscopy, and X-ray diffraction. We obtained diverse network conformations at different combinations to examine the regulation of cell adhesion and proliferation by modifying the microstructure of the matrix to be applied as a potential scaffold for coating breast implants. The key contribution of this work is the solution it provides to enhance the healing process on prosthesis implantation considering that the use of these PEO⁻fibroin scaffolds reduced (p < 0.05) the amount of pyknotic nuclei. Therefore, viability of HaCaT human keratinocytes on PEO⁻fibroin matrices was significantly improved (p < 0.001). These findings provide a rational strategy to coat breast implants improving biocompatibility.
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Affiliation(s)
- Gabriela Carrasco-Torres
- Departamento de Nanociencias y Nanotecnología. Centro de Investigación y de Estudios Avanzados del IPN. Av. IPN 2508, la laguna Ticomán, Ciudad de México 07360, Mexico.
| | - Manuel A Valdés-Madrigal
- Departamento de Nanociencias y Nanotecnología. Centro de Investigación y de Estudios Avanzados del IPN. Av. IPN 2508, la laguna Ticomán, Ciudad de México 07360, Mexico.
- Instituto Tecnológico Superior de Ciudad Hidalgo. Av. Ing. Carlos Rojas Gutiérrez 2120, fracc. Valle de la herradura, Michoacán 61100, Mexico.
| | - Verónica R Vásquez-Garzón
- CONACYT-Facultad de Medicina y Cirugía Universidad Autónoma Benito Juárez de Oaxaca, Ex Hacienda de Aguilera S/N, Carretera a San Felipe del Agua S/N, Oaxaca 68020, Mexico.
| | - Rafael Baltiérrez-Hoyos
- CONACYT-Facultad de Medicina y Cirugía Universidad Autónoma Benito Juárez de Oaxaca, Ex Hacienda de Aguilera S/N, Carretera a San Felipe del Agua S/N, Oaxaca 68020, Mexico.
| | - Eduard De la Cruz-Burelo
- Centro de Investigación y de Estudios Avanzados del IPN, Av. IPN 2508, la laguna Ticomán, Ciudad de México 07360, Mexico.
| | - Ramón Román-Doval
- Departamento de investigación y posgrado en alimentos, Facultad de Química, Universidad Autónoma de Querétaro, Centro universitario, Santiago de Querétaro, Querétaro 76010, Mexico.
| | - Anaí A Valencia-Lazcano
- Centro de Investigación y de Estudios Avanzados del IPN, Av. IPN 2508, la laguna Ticomán, Ciudad de México 07360, Mexico.
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Malas A, Bharati A, Verkinderen O, Goderis B, Moldenaers P, Cardinaels R. Effect of the GO Reduction Method on the Dielectric Properties, Electrical Conductivity and Crystalline Behavior of PEO/rGO Nanocomposites. Polymers (Basel) 2017; 9:polym9110613. [PMID: 30965915 PMCID: PMC6418708 DOI: 10.3390/polym9110613] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Revised: 10/29/2017] [Accepted: 11/11/2017] [Indexed: 11/16/2022] Open
Abstract
The effect of the reduction method to prepare reduced graphene oxide (rGO) on the melt linear viscoelastic properties, electrical conductivity, polymer matrix crystalline behavior and dielectric properties of PEO-rGO nanocomposites was investigated. Reduction was performed chemically with either sodium borohydride (NaBH4) or hydrazine monohydrate (N2H4·H2O) or both reduction agents consecutively as well as thermally at 1000 °C. The different reduction methods resulted in exfoliated rGO sheets with different types and amounts of remaining functional groups, as indicated by FT-IR, Raman, TGA and XRD characterization. Moreover, their electrical conductivity ranged between 10−4 and 10−1 S/cm, with the consecutive use of both chemical reduction agents being far superior. PEO nanocomposites with filler loadings of 0.5 wt %, 1 wt % and 2 wt % were prepared by solvent mixing. The rGO fillers affected the melt linear viscoelastic and crystalline behavior of the PEO matrix and resulted in nanocomposites with a substantially increased electrical conductivity. Despite the wide variability in filler conductivity, the effects on the polymer nanocomposite properties were less distinctive. A correlation was obtained between the reduction of the mobility of the polymer chains (evaluated by the glass transition temperature) and the dielectric strength of the interfacial polarisation originating from the effective entrapment of GO/rGO filler charges at the interface with the less conductive PEO. Thus, favorable interactions of the polar PEO with the filler led to reduced mobility of the PEO chains and thereby a more effective entrapment of the filler charges at the PEO interface.
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Affiliation(s)
- Asish Malas
- Soft Matter Rheology and Technology, Department of Chemical Engineering, KU Leuven, Celestijnenlaan 200F, Box 2424, B-3001 Leuven, Belgium.
| | - Avanish Bharati
- Soft Matter Rheology and Technology, Department of Chemical Engineering, KU Leuven, Celestijnenlaan 200F, Box 2424, B-3001 Leuven, Belgium.
| | - Olivier Verkinderen
- Chemistry and Materials, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, Box 2404, B-3001 Leuven, Belgium.
| | - Bart Goderis
- Chemistry and Materials, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, Box 2404, B-3001 Leuven, Belgium.
| | - Paula Moldenaers
- Soft Matter Rheology and Technology, Department of Chemical Engineering, KU Leuven, Celestijnenlaan 200F, Box 2424, B-3001 Leuven, Belgium.
| | - Ruth Cardinaels
- Soft Matter Rheology and Technology, Department of Chemical Engineering, KU Leuven, Celestijnenlaan 200F, Box 2424, B-3001 Leuven, Belgium.
- Polymer Technology, Department of Mechanical Engineering, Eindhoven University of Technology, Box 513, 5600MB Eindhoven, The Netherlands.
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Jagtap SB, Ratna D. Effect of molecular weight of curing agents on properties of nanocomposites based on epoxy resin and organoclay with reactive modifier. J Appl Polym Sci 2017. [DOI: 10.1002/app.44595] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Siddheshwar B. Jagtap
- Polymer Science and Engineering Division; CSIR-National Chemical Laboratory; Dr. Homi Bhabha Road Pune 411008 India
| | - Debdatta Ratna
- Polymer Science and Technology Centre, Naval Materials Research Laboratory; Shill-Badlapur Road, Anand Nagar P.O Ambernath (E) 421506 India
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Grkovic M, Stojanovic DB, Kojovic A, Strnad S, Kreze T, Aleksic R, Uskokovic PS. Keratin–polyethylene oxide bio-nanocomposites reinforced with ultrasonically functionalized graphene. RSC Adv 2015. [DOI: 10.1039/c5ra12402f] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Polyethylene oxide (PEO) functionalized graphene (f-G) was prepared by ultrasonication of pristine graphene in PEO aqueous solution.
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Affiliation(s)
- M. Grkovic
- Innovation Centre
- University of Belgrade
- Faculty of Technology and Metallurgy
- Belgrade
- Serbia
| | - D. B. Stojanovic
- University of Belgrade
- Faculty of Technology and Metallurgy
- Belgrade
- Serbia
| | - A. Kojovic
- University of Belgrade
- Faculty of Technology and Metallurgy
- Belgrade
- Serbia
| | - S. Strnad
- University of Maribor
- Faculty of Mechanical Engineering
- Slovenia
| | - T. Kreze
- University of Maribor
- Faculty of Mechanical Engineering
- Slovenia
| | - R. Aleksic
- University of Belgrade
- Faculty of Technology and Metallurgy
- Belgrade
- Serbia
| | - P. S. Uskokovic
- University of Belgrade
- Faculty of Technology and Metallurgy
- Belgrade
- Serbia
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