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Niu Y, Wu J, Kang Y, Sun P, Xiao Z, Zhao D. Recent advances of magnetic chitosan hydrogel: Preparation, properties and applications. Int J Biol Macromol 2023; 247:125722. [PMID: 37419264 DOI: 10.1016/j.ijbiomac.2023.125722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 06/19/2023] [Accepted: 07/04/2023] [Indexed: 07/09/2023]
Abstract
Magnetic chitosan hydrogels are organic-inorganic composite material with the characteristics of both magnetic materials and natural polysaccharides. Due to its biocompatibility, low toxicity and biodegradability, chitosan, a natural polymer has been widely used for preparing magnetic hydrogels. The addition of magnetic nanoparticles to chitosan hydrogels not only improves their mechanical strength, but also endows them with magnetic thermal effects, targeting capabilities, magnetically-sensitive release characteristics, easy separation and recovery, thus enabling them to be used in various applications including drug delivery, magnetic resonance imaging, magnetothermal therapy, and adsorption of heavy metals and dyes. In this review, the physical and chemical crosslinking methods of chitosan hydrogels and the methods for binding magnetic nanoparticles in hydrogel networks are first introduced. Subsequently, the properties of magnetic chitosan hydrogels were summarized including mechanical properties, self-healing, pH responsiveness and properties in magnetic fields. Finally, the potential for further technological and applicative advancements of magnetic chitosan hydrogels is discussed.
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Affiliation(s)
- Yunwei Niu
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, No. 100 Haiquan Road, Shanghai 201418, China
| | - Jiahe Wu
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, No. 100 Haiquan Road, Shanghai 201418, China
| | - Yanxiang Kang
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, No. 100 Haiquan Road, Shanghai 201418, China
| | - Pingli Sun
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, No. 100 Haiquan Road, Shanghai 201418, China
| | - Zuobing Xiao
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, No. 100 Haiquan Road, Shanghai 201418, China; School of Agriculture and Biology, Shanghai Jiaotong University, No. 800 Dongchuan Road, Shanghai 200240, China
| | - Di Zhao
- School of Perfume and Aroma Technology, Shanghai Institute of Technology, No. 100 Haiquan Road, Shanghai 201418, China.
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2
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Dynamics of Poly(methyl methacrylate) in Ionic Liquids with Different Concentration and Cationic Structures. CHINESE JOURNAL OF POLYMER SCIENCE 2022. [DOI: 10.1007/s10118-022-2840-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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3
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Hughes MD, Cussons S, Mahmoudi N, Brockwell DJ, Dougan L. Tuning Protein Hydrogel Mechanics through Modulation of Nanoscale Unfolding and Entanglement in Postgelation Relaxation. ACS NANO 2022; 16:10667-10678. [PMID: 35731007 PMCID: PMC9331141 DOI: 10.1021/acsnano.2c02369] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Globular folded proteins are versatile nanoscale building blocks to create biomaterials with mechanical robustness and inherent biological functionality due to their specific and well-defined folded structures. Modulating the nanoscale unfolding of protein building blocks during network formation (in situ protein unfolding) provides potent opportunities to control the protein network structure and mechanics. Here, we control protein unfolding during the formation of hydrogels constructed from chemically cross-linked maltose binding protein using ligand binding and the addition of cosolutes to modulate protein kinetic and thermodynamic stability. Bulk shear rheology characterizes the storage moduli of the bound and unbound protein hydrogels and reveals a correlation between network rigidity, characterized as an increase in the storage modulus, and protein thermodynamic stability. Furthermore, analysis of the network relaxation behavior identifies a crossover from an unfolding dominated regime to an entanglement dominated regime. Control of in situ protein unfolding and entanglement provides an important route to finely tune the architecture, mechanics, and dynamic relaxation of protein hydrogels. Such predictive control will be advantageous for future smart biomaterials for applications which require responsive and dynamic modulation of mechanical properties and biological function.
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Affiliation(s)
- Matt D.
G. Hughes
- School of
Physics and Astronomy, Faculty of Engineering and Physical Sciences, University of Leeds, Leeds LS2 9JT, U.K.
| | - Sophie Cussons
- Astbury Centre
for Structural Molecular Biology, University
of Leeds, Leeds LS2 9JT, U.K.
- School of
Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds LS2 9JT, U.K.
| | - Najet Mahmoudi
- ISIS
Neutron
and Muon Spallation Source, STFC Rutherford
Appleton Laboratory, Oxfordshire OX11 0QX, U.K.
| | - David J. Brockwell
- Astbury Centre
for Structural Molecular Biology, University
of Leeds, Leeds LS2 9JT, U.K.
- School of
Molecular and Cellular Biology, Faculty of Biological Sciences, University of Leeds, Leeds LS2 9JT, U.K.
| | - Lorna Dougan
- School of
Physics and Astronomy, Faculty of Engineering and Physical Sciences, University of Leeds, Leeds LS2 9JT, U.K.
- Astbury Centre
for Structural Molecular Biology, University
of Leeds, Leeds LS2 9JT, U.K.
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Influence of Centrifugation Cycles of Natural Rubber Latex on Final Properties of Uncrosslinked Deproteinized Natural Rubber. Polymers (Basel) 2022; 14:polym14132713. [PMID: 35808758 PMCID: PMC9269511 DOI: 10.3390/polym14132713] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 06/25/2022] [Accepted: 06/29/2022] [Indexed: 11/16/2022] Open
Abstract
Natural rubber latex (NRL) is a polymer (blend) extracted from the milky sap of para rubber trees. Due to being a natural biopolymer, NRL contains various proteins that may be allergenic to humans when in skin contact. Attempts have been made to use deproteinized natural rubber (DPNR) instead of impure NRL, and the final properties of these two types of rubber tend to differ. Thus, the correlations between their chemistry and properties are of focal interest in this work. DPNR was prepared by incubating NRL with urea, followed by aqueous washing/centrifugation. The physical, mechanical, and dynamic properties of incubated NRL before and after washing/centrifugation were examined to distinguish its influences from those of incubation with urea. According to the findings, the proteins, phospholipids, and chain entanglements were responsible for natural polymer networks formed in the NR. Although the proteins were largely removed from the latex by incubation, the properties of high ammonia natural rubber (HANR) were still maintained in its DPNR form, showing that other network linkages dominated over those contributed by the proteins. In the incubated latex, the naturally occurring linkages were consistently reduced with the number of wash cycles.
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Savedra RML, de Morais MNB, Siqueira MF. On the microstructures of the bulk of P3HT amorphous films obtained from two protocols: Insights from molecular dynamics simulations. J Mol Graph Model 2022; 117:108279. [DOI: 10.1016/j.jmgm.2022.108279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 06/18/2022] [Accepted: 07/17/2022] [Indexed: 10/17/2022]
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6
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Liu G, Fang D, Dan Y, Luo H, Luo C, Niu Y, Li G. Influence of ionic liquids on the chain dynamics and enthalpy relaxation of poly(methyl methacrylate). Phys Chem Chem Phys 2022; 24:16388-16396. [PMID: 35762774 DOI: 10.1039/d2cp02223k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Imidazolium ionic liquids (ILs) with various alkyl chain lengths on the cations ([Cnmim]+, n = 2, 4 and 8) and different combined anions ([TFSI]- and [PF6]-) were blended with poly(methyl methacrylate) (PMMA), and the effects of the IL structure on the chain dynamics of PMMA were experimentally investigated by rheology and DSC measurements combined with a simulation method. The results indicate that the interaction between PMMA and ILs becomes stronger as the alkyl chain length on the imidazolium ring increases or the anion changes from [PF6]- to [TFSI]-. As a result, a higher critical entanglement concentration and a larger entanglement molecular weight of PMMA were found in [C8mim][TFSI] due to the stiffer conformation. Molecular dynamics (MD) simulations further demonstrated stronger interactions between PMMA and ILs with longer cationic alkyl chain lengths or [TFSI]- anions, which showed smaller Flory-Huggins interaction parameters and larger radii of gyration, Rg. However, the larger size of alkyl chains or [TFSI]- anions produced a larger free volume in the system as evidenced by positron annihilation lifetime spectroscopy (PALS), which competed with the molecular interaction and dominated the segmental motion. Therefore, a lower Tg and accelerated segmental relaxation were observed. Compared to alkyl chain length, the effect of anions on the interactions between ILs and PMMA is more prominent.
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Affiliation(s)
- Gang Liu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering of China, Sichuan University, Chengdu 610065, China.
| | - Dong Fang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering of China, Sichuan University, Chengdu 610065, China.
| | - Yongjie Dan
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering of China, Sichuan University, Chengdu 610065, China.
| | - Huan Luo
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering of China, Sichuan University, Chengdu 610065, China.
| | - Cong Luo
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering of China, Sichuan University, Chengdu 610065, China.
| | - Yanhua Niu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering of China, Sichuan University, Chengdu 610065, China.
| | - Guangxian Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering of China, Sichuan University, Chengdu 610065, China.
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Seo J, Kim B, Kim MS, Seo JH. Optimization of Anisotropic Crystalline Structure of Molecular Necklace-like Polyrotaxane for Tough Piezoelectric Elastomer. ACS Macro Lett 2021; 10:1371-1376. [PMID: 35549010 DOI: 10.1021/acsmacrolett.1c00567] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
While piezoelectric materials are applied in various fields, they generally exhibit poor mechanical toughness. To increase the applicability of these, their mechanical properties need to be improved. In this study, a tough piezoelectric polyrotaxane (PRX) elastomer was developed by blending PRX samples of two different lengths, formed using 10K and 35K poly(ethylene glycol), to align dipole moments for optimization of the piezoelectricity characteristics. The effects of the blending ratio on the crystalline structure of the obtained PRX elastomer were investigated by X-ray diffraction analysis and transmission electron microscopy. In addition, the ferroelectric and piezoelectric properties of the PRX elastomer were evaluated based on its polarization hysteresis loop and voltage generation characteristics, respectively. The PRX elastomer formed by using a ratio of 3:1 (ePR10k7535k25) exhibited a long-range-ordered anisotropic crystalline structure, resulting in a large polarization (Pr) value. As a result, ePR10k7535k25 showed greatly enhanced piezosensitivity against the mechanical vibrations generated by respiratory signals.
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Affiliation(s)
- Jiae Seo
- Department of Materials Science and Engineering, Korea University, 145, Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Bitgaram Kim
- Department of Materials Science and Engineering, Korea University, 145, Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Min-Seok Kim
- Advanced Material Research Division, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - Ji-Hun Seo
- Department of Materials Science and Engineering, Korea University, 145, Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
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John J, Deshpande AP, Varughese S. Morphology control and ionic crosslinking of pectin domains to enhance the toughness of solvent cast
PVA
/pectin blends. J Appl Polym Sci 2021. [DOI: 10.1002/app.50360] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Jacob John
- Department of Chemical Engineering Indian Institute of Technology Madras India
| | | | - Susy Varughese
- Department of Chemical Engineering Indian Institute of Technology Madras India
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9
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Lin YT, Li JY, Tseng HH, Wey MY. Insights into the Role of Polymer Conformation on the Cutoff Size of Carbon Molecular Sieving Membranes for Hydrogen Separation and Its Novel Pore Size Detection Technology. ACS APPLIED MATERIALS & INTERFACES 2021; 13:5165-5175. [PMID: 33480251 DOI: 10.1021/acsami.0c21338] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
In this study, three polymer precursor conformations, dilute, semi-dilute, and concentrated, were used to fabricate carbon molecular sieving (CMS) membranes via a fixed carbonization protocol. The effects of the precursor conformation on the microstructure of the resultant CMS membranes were characterized by Raman analysis. Their ability to separate light gases, such as H2/CH4 and H2/N2, was assessed with a single-gas system. Additionally, a novel method was proposed to detect the cutoff size of the CMS membranes created in this study. The method combined high-resolution transmission electron microscopy (HR-TEM) and a focused ion beam (FIB) system. Finally, due to the semi-dilute solution's denser polymer chains and lack of severe polymer entanglement, highly graphited CMS membranes with excellent gas separation performance were successfully synthesized using a semi-dilute polyetherimide dope solution. Interlayer distances in the carbon matrix were visualized and measured using our novel probing tool (HR-TEM and FIB) and software. The CMS membrane fabricated with a semi-dilute dope exhibited the best gas separation performance of the tested membranes. It had the most ordered carbon sheet orientation and exhibited a superior selectivity of H2/CH4 = 293 with a hydrogen permeability of 1138.7 Barrer, far surpassing the reported permselectivity of other membranes. We believe that the high H2/CH4 selectivity presented here is unprecedented for CMS membranes reported in the literature.
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Affiliation(s)
- Yu-Ting Lin
- Department of Environmental Engineering, National Chung Hsing University, Taichung 402, Taiwan, ROC
| | - Jing-Yi Li
- Department of Environmental Engineering, National Chung Hsing University, Taichung 402, Taiwan, ROC
| | - Hui-Hsin Tseng
- Department of Occupational Safety and Health, Chung Shan Medical University, Taichung 402, Taiwan, ROC
- Department of Occupational Medicine, Chung Shan Medical University Hospital, Taichung 402, Taiwan, ROC
| | - Ming-Yen Wey
- Department of Environmental Engineering, National Chung Hsing University, Taichung 402, Taiwan, ROC
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10
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Brandner S, Becker T, Jekle M. Classification of starch-gluten networks into a viscoelastic liquid or solid, based on rheological aspects — A review. Int J Biol Macromol 2019; 136:1018-1025. [DOI: 10.1016/j.ijbiomac.2019.06.160] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Revised: 06/14/2019] [Accepted: 06/21/2019] [Indexed: 12/01/2022]
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11
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Rodríguez-Rodríguez R, Espinosa-Andrews H, Velasquillo-Martínez C, García-Carvajal ZY. Composite hydrogels based on gelatin, chitosan and polyvinyl alcohol to biomedical applications: a review. INT J POLYM MATER PO 2019. [DOI: 10.1080/00914037.2019.1581780] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Rogelio Rodríguez-Rodríguez
- Unidad Médica y Farmacéutica, Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco, Guadalajara, Jalisco, Mexico
| | - Hugo Espinosa-Andrews
- Unidad de Tecnología Alimentaria, Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco, Zapopan, Jalisco, México
| | | | - Zaira Yunuen García-Carvajal
- Unidad Médica y Farmacéutica, Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco, Guadalajara, Jalisco, Mexico
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12
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Wittenberg E, Meyer A, Eggers S, Abetz V. Hydrogen bonding and thermoplastic elastomers - a nice couple with temperature-adjustable mechanical properties. SOFT MATTER 2018; 14:2701-2711. [PMID: 29564456 DOI: 10.1039/c8sm00296g] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Styrene-butadiene copolymers are modified with varying fractions of benzoic acid moieties being able to perform hydrogen bonding. This is done by using a simple synthetic approach which utilizes click chemistry. Temperature-dependent dynamic mechanical properties are studied, and it turns out that even the apparently rather simple hydrogen bonding motif has a marked impact on the material properties due to the fact that it facilitates the formation of a supramolecular polymer network. Besides a glass transition, the investigated functionalized copolymers exhibit a second endothermic transition, known as a quasi-melting. This is related to the opening of the hydrogen bonding complexes. Additionally to dynamic mechanical analysis (DMA), differential scanning calorimetry (DSC), temperature-dependent infrared (IR) spectroscopy and small angle X-ray scattering (SAXS) are used to understand the structure-property relationships.
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Affiliation(s)
- Elisabeth Wittenberg
- Department of Physical Chemistry, University of Hamburg, Martin-Luther-King Platz 6, 20146, Hamburg, Germany.
| | - Andreas Meyer
- Department of Physical Chemistry, University of Hamburg, Martin-Luther-King Platz 6, 20146, Hamburg, Germany.
| | - Steffen Eggers
- Department of Physical Chemistry, University of Hamburg, Martin-Luther-King Platz 6, 20146, Hamburg, Germany.
| | - Volker Abetz
- Department of Physical Chemistry, University of Hamburg, Martin-Luther-King Platz 6, 20146, Hamburg, Germany. and Helmholtz-Zentrum Geesthacht, Zentrum für Material- und Küstenforschung GmbH, Institute of Polymer Science, Max-Planck-Straße 1, 21502 Geesthacht, Germany
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Effect of CePO4 nanostructures in transparent PMMA/castor-oil based PU IPNs on thermal stability, optical and mechanical properties. JOURNAL OF POLYMER RESEARCH 2017. [DOI: 10.1007/s10965-017-1294-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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14
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Wei W, Feng S, Zhou Q, Liang H, Long Y, Wu Q, Gao H, Liang G, Zhu F. Study on glass transition and physical aging of polystyrene nanowires by differential scanning calorimetry. JOURNAL OF POLYMER RESEARCH 2017. [DOI: 10.1007/s10965-017-1199-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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15
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Liu XT, Bao RY, Li YM, Yang W, Xie BH, Yang MB. Effect of chain entanglement on the melt-crystallization behavior of poly(l-lactide) acid. JOURNAL OF POLYMER RESEARCH 2016. [DOI: 10.1007/s10965-016-1060-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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16
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Bella F, Colò F, Nair JR, Gerbaldi C. Photopolymer Electrolytes for Sustainable, Upscalable, Safe, and Ambient-Temperature Sodium-Ion Secondary Batteries. CHEMSUSCHEM 2015; 8:3668-76. [PMID: 26437583 DOI: 10.1002/cssc.201500873] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2015] [Revised: 08/10/2015] [Indexed: 05/28/2023]
Abstract
The first example of a photopolymerized electrolyte for a sodium-ion battery is proposed herein. By means of a preparation process free of solvents, catalysts, purification steps, and separation steps, it is possible to obtain a three-dimensional polymeric network capable of efficient sodium-ion transport. The thermal properties of the resulting solid electrolyte separator, characterized by means of thermogravimetric and calorimetric techniques, are excellent for use in sustainable energy systems conceived for safe large-scale grid storage. The photopolymerized electrolyte shows a wide electrochemical stability window up to 4.8 V versus Na/Na(+) along with the highest ionic conductivity (5.1 mS cm(-1) at 20 °C) obtained in the field of Na-ion polymer batteries so far and stable long-term constant-current charge/discharge cycling. Moreover, the polymeric networks are also demonstrated for the in situ fabrication of electrode/electrolyte composites with excellent interfacial properties, which are ideal for all-solid-state, safe, and easily upscalable device assembly.
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Affiliation(s)
- Federico Bella
- GAME Lab, CHENERGY Group, Department of Applied Science and Technology-DISAT, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129, Torino, Italy.
| | - Francesca Colò
- GAME Lab, CHENERGY Group, Department of Applied Science and Technology-DISAT, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129, Torino, Italy
| | - Jijeesh R Nair
- GAME Lab, CHENERGY Group, Department of Applied Science and Technology-DISAT, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129, Torino, Italy
| | - Claudio Gerbaldi
- GAME Lab, CHENERGY Group, Department of Applied Science and Technology-DISAT, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129, Torino, Italy
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