1
|
Cheng H, Ouyang J. Soret Effect of Ionic Liquid Gels for Thermoelectric Conversion. J Phys Chem Lett 2022; 13:10830-10842. [PMID: 36382894 DOI: 10.1021/acs.jpclett.2c02645] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Cations and anions can accumulate at the two ends of an ionic conductor under temperature gradient, which is the so-called Soret effect. This can generate a voltage between the two electrodes, and the thermopower can be higher than that of the electronic conductors because of the Seebeck effect by 1-2 orders in magnitude. The thermoelectric properties of ionic conductors depend on the ionic thermopower, ionic conductivity, and thermal conductivity. Compared with other ionic conductors, like liquid electrolytes and hydrogels, ionogels made of an ionic liquid and a gelator can have the advantages of high thermopower and high stability. Great progress was recently made to improve the ionic conductivity and/or ionic thermopower of ionogels. They can be used in ionic thermoelectric capacitors (ITECs) to harvest heat. In addition, they can be integrated with electronic thermoelectric materials to harvest heat from both temperature gradient and temperature fluctuation, which can be caused by waste heat.
Collapse
Affiliation(s)
- Hanlin Cheng
- Department of Materials Science and Engineering, National University of Singapore, Singapore117575, Singapore
| | - Jianyong Ouyang
- Department of Materials Science and Engineering, National University of Singapore, Singapore117575, Singapore
- National University of Singapore Suzhou Research Institute, No. 377 Linquan Street, Suzhou Industrial Park, Suzhou, Jiangsu215000, China
| |
Collapse
|
2
|
Ndruru STCL, Widiarto S, Pramono E, Wahyuningrum D, Bundjali B, Arcana IM. The Influences of [EMIm]Ac Ionic Liquid for the Characteristics of Li‐Ion Batteries' Solid Biopolymer Blend Electrolyte Based on Cellulose Derivatives of MC/CMC Blend. MACROMOL CHEM PHYS 2022. [DOI: 10.1002/macp.202100362] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Sun Theo Constan Lotebulo Ndruru
- Inorganic and Physical Chemistry Division Faculty of Mathematics and Natural Sciences Institut Teknologi Bandung Jalan Ganesha No. 10 Bandung Jawa Barat 40132 Indonesia
- Education Office of North Sumatera Province Jalan Cik di Tiro No. 1‐d Medan Sumatera Utara 20151 Indonesia
- Electromedic Technology Program STIKes Binalita Sudama Medan Jalan Gedung PBSI Pasar V Medan Sumatera Utara 20371 Indonesia
| | - Sonny Widiarto
- Inorganic and Physical Chemistry Division Faculty of Mathematics and Natural Sciences Institut Teknologi Bandung Jalan Ganesha No. 10 Bandung Jawa Barat 40132 Indonesia
- Analytical Chemistry Division Faculty of Mathematics and Natural Sciences Universitas Lampung Jalan Prof. Dr. Sumantri Brojonegoro No. 1 Bandar Lampung Lampung 35145 Indonesia
| | - Edi Pramono
- Inorganic and Physical Chemistry Division Faculty of Mathematics and Natural Sciences Institut Teknologi Bandung Jalan Ganesha No. 10 Bandung Jawa Barat 40132 Indonesia
- Chemistry Department Faculty of Mathematics and Natural Sciences Universitas Sebelas Maret Jalan Ir. Sutami No. 36A Kentingan Surakarta, Jawa Tengah 57126 Indonesia
| | - Deana Wahyuningrum
- Organic Chemistry Division, Chemistry Program Faculty of Mathematics and Natural Sciences Institut Teknologi Bandung Jalan Ganesha No. 10 Bandung, Jawa Barat 40132 Indonesia
| | - Bunbun Bundjali
- Inorganic and Physical Chemistry Division Faculty of Mathematics and Natural Sciences Institut Teknologi Bandung Jalan Ganesha No. 10 Bandung Jawa Barat 40132 Indonesia
| | - I Made Arcana
- Inorganic and Physical Chemistry Division Faculty of Mathematics and Natural Sciences Institut Teknologi Bandung Jalan Ganesha No. 10 Bandung Jawa Barat 40132 Indonesia
| |
Collapse
|
3
|
Hopson C, Villar-Chavero MM, Domínguez JC, Alonso MV, Oliet M, Rodriguez F. Cellulose ionogels, a perspective of the last decade: A review. Carbohydr Polym 2021; 274:118663. [PMID: 34702482 DOI: 10.1016/j.carbpol.2021.118663] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 08/04/2021] [Accepted: 09/08/2021] [Indexed: 11/19/2022]
Abstract
Cellulose ionogels have been extensively studied due to the variability of their properties and applications. The capability of trapping an ionic liquid in a biodegradable solid matrix without losing its properties makes this type of material a promising substitute for fossil fuel-derived materials. The possibility to formulate ionogels chemically or physically, to choose between different ionic liquids, cellulose types, and the possibility to add a wide range of additives, make these ionogels an adaptable material that can be modified for each target application in many fields such as medicine, energy storage, electrochemistry, etc. The aim of this review is to show its versatility and to provide a summary picture of the advances in the field of cellulose ionogels formulation (chemical or physical methods), as well as their potential applications, so this review will serve as a stimulus for research on these materials in the future.
Collapse
Affiliation(s)
- Cynthia Hopson
- Chemical Engineering and Materials Department, Complutense University of Madrid, Av. Complutense S/N, 28040 Madrid, Spain.
| | - M Mar Villar-Chavero
- Chemical Engineering and Materials Department, Complutense University of Madrid, Av. Complutense S/N, 28040 Madrid, Spain
| | - Juan C Domínguez
- Chemical Engineering and Materials Department, Complutense University of Madrid, Av. Complutense S/N, 28040 Madrid, Spain
| | - M Virginia Alonso
- Chemical Engineering and Materials Department, Complutense University of Madrid, Av. Complutense S/N, 28040 Madrid, Spain
| | - Mercedes Oliet
- Chemical Engineering and Materials Department, Complutense University of Madrid, Av. Complutense S/N, 28040 Madrid, Spain
| | - Francisco Rodriguez
- Chemical Engineering and Materials Department, Complutense University of Madrid, Av. Complutense S/N, 28040 Madrid, Spain
| |
Collapse
|
4
|
Tao L, Liu Y, Wu D, Wei QH, Taubert A, Xie Z. Luminescent Ionogels with Excellent Transparency, High Mechanical Strength, and High Conductivity. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:nano10122521. [PMID: 33334081 PMCID: PMC7765529 DOI: 10.3390/nano10122521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Revised: 12/07/2020] [Accepted: 12/10/2020] [Indexed: 06/12/2023]
Abstract
The paper describes a new kind of ionogel with both good mechanical strength and high conductivity synthesized by confining the ionic liquid (IL) 1-butyl-3-methylimidazolium bis(trifluoromethane sulfonyl)imide ([Bmim][NTf2]) within an organic-inorganic hybrid host. The organic-inorganic host network was synthesized by the reaction of methyltrimethoxysilane (MTMS), tetraethoxysilane (TEOS), and methyl methacrylate (MMA) in the presence of a coupling agent, offering the good mechanical strength and rapid shape recovery of the final products. The silane coupling agent 3-methacryloxypropyltrimethoxysilane (KH-570) plays an important role in improving the mechanical strength of the inorganic-organic hybrid, because it covalently connected the organic component MMA and the inorganic component SiO2. Both the thermal stability and mechanical strength of the ionogel significantly increased by the addition of IL. The immobilization of [Bmim][NTf2] within the ionogel provided the final ionogel with an ionic conductivity as high as ca. 0.04 S cm-1 at 50 °C. Moreover, the hybrid ionogel can be modified with organosilica-modified carbon dots within the network to yield a transparent and flexible ionogel with strong excitation-dependent emission between 400 and 800 nm. The approach is, therefore, a blueprint for the construction of next-generation multifunctional ionogels.
Collapse
Affiliation(s)
- Lumi Tao
- Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials, College of Chemistry, Fuzhou University, 2 Xueyuan Road, Fuzhou 350002, China; (L.T.); (Y.L.); (D.W.); (Q.-H.W.)
| | - Yuchuan Liu
- Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials, College of Chemistry, Fuzhou University, 2 Xueyuan Road, Fuzhou 350002, China; (L.T.); (Y.L.); (D.W.); (Q.-H.W.)
| | - Dan Wu
- Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials, College of Chemistry, Fuzhou University, 2 Xueyuan Road, Fuzhou 350002, China; (L.T.); (Y.L.); (D.W.); (Q.-H.W.)
| | - Qiao-Hua Wei
- Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials, College of Chemistry, Fuzhou University, 2 Xueyuan Road, Fuzhou 350002, China; (L.T.); (Y.L.); (D.W.); (Q.-H.W.)
| | - Andreas Taubert
- Institute of Chemistry, University of Potsdam, 14476 Potsdam, Germany
| | - Zailai Xie
- Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials, College of Chemistry, Fuzhou University, 2 Xueyuan Road, Fuzhou 350002, China; (L.T.); (Y.L.); (D.W.); (Q.-H.W.)
| |
Collapse
|
5
|
Miao Y, Pudukudy M, Zhi Y, Miao Y, Shan S, Jia Q, Ni Y. A facile method for in situ fabrication of silica/cellulose aerogels and their application in CO2 capture. Carbohydr Polym 2020; 236:116079. [DOI: 10.1016/j.carbpol.2020.116079] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Revised: 02/26/2020] [Accepted: 02/26/2020] [Indexed: 12/12/2022]
|
6
|
Zhao J, Lei Q, He F, Zheng C, Liu Y, Zhao X, Yin J. Nonmonotonic Influence of Size of Quaternary Ammonium Countercations on Micromorphology, Polarization, and Electroresponse of Anionic Poly(ionic liquid)s. J Phys Chem B 2020; 124:2920-2929. [PMID: 32182069 DOI: 10.1021/acs.jpcb.9b11702] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The size influence of quaternary ammonium countercations in poly[4-styrenesulfonyl(trifluoromethylsulfonyl)imide][tetraalkylammonium] (P[STFSI][Nnnnn], n = 1, 2, and 3) poly(ionic liquid)s on dielectric polarization and the stimuli-responsive electrorheological effect is investigated by dielectric spectroscopy and rheology, and the microstructure-level understanding behind the influence is analyzed by Raman and X-ray scattering spectra. The size influence of quaternary ammonium cations is found to be nonmonotonic. The largest electrorheological effect accompanied by best polarization properties is demonstrated in P[STFSI][N2222]. Raman spectra and activation energy measurements demonstrate that the nonmonotonic influence originates from the fact that, compared to small N1111+ and large N3333+, intermediate N2222+ as countercations can contribute a higher mobile ion number and lower activation energy barrier of ion dissociation and motion. But the experimental values of activation energy are not consistent with theoretically calculated values by considering the ion pair electrostatic potential and elastic force contribution of the matrix. By X-ray scattering and diffraction characterizations, it is clarified that the nonmonotonic influence and the inconsistency of activation energy originate from the size influence of Nnnnn+ on the micromorphology of P[STFSI][Nnnnn]. Compared to the semicrystalline structure of P[STFSI][N1111] and the ionic aggregation structure of P[STFSI][N3333], the relatively uniform amorphous structure of P[STFSI][N2222] may be responsible for its lower activation energy barrier of ion motion. This study further provides insights into the design and preparation of future poly(ionic liquid)-based electrorheological materials by considering not only molecular structure but also micromorphology.
Collapse
Affiliation(s)
- Jia Zhao
- Smart Materials Laboratory, Department of Applied Physics, Northwestern Polytechnical University, Xi'an 710129, China
| | - Qi Lei
- Smart Materials Laboratory, Department of Applied Physics, Northwestern Polytechnical University, Xi'an 710129, China
| | - Fang He
- Smart Materials Laboratory, Department of Applied Physics, Northwestern Polytechnical University, Xi'an 710129, China
| | - Chen Zheng
- Smart Materials Laboratory, Department of Applied Physics, Northwestern Polytechnical University, Xi'an 710129, China
| | - Yang Liu
- Smart Materials Laboratory, Department of Applied Physics, Northwestern Polytechnical University, Xi'an 710129, China
| | - Xiaopeng Zhao
- Smart Materials Laboratory, Department of Applied Physics, Northwestern Polytechnical University, Xi'an 710129, China
| | - Jianbo Yin
- Smart Materials Laboratory, Department of Applied Physics, Northwestern Polytechnical University, Xi'an 710129, China
| |
Collapse
|
7
|
Klyba LV, Sanzheeva ER, Shagun LG, Zhilitskaya LV. Study of the Synthetic Potential of the Reaction of Benzimidazole with Bis(iodomethyl)tetramethyldisiloxane by Matrix-Free Laser Desorption/Ionization Mass Spectrometry. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2020. [DOI: 10.1134/s1070428020010121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
8
|
Sahrash R, Siddiqa A, Razzaq H, Iqbal T, Qaisar S. PVDF based ionogels: applications towards electrochemical devices and membrane separation processes. Heliyon 2018; 4:e00847. [PMID: 30450432 PMCID: PMC6226564 DOI: 10.1016/j.heliyon.2018.e00847] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Revised: 09/10/2018] [Accepted: 10/04/2018] [Indexed: 11/28/2022] Open
Abstract
Ionogels have emerged as one of the most interesting and captivating form of composites which credits to the outstanding characteristics. One of the most important constituent of ionogels is ionic liquid, which show many attractive properties notably non-volatility, in-flammability, negligible vapor pressure, tunability, thermal stability and solvating ability. A large variety of matrix materials have been under consideration for ionogels, presently, polymer/ionic liquid based ionogels have attracted much attention. Numerous polymeric materials such as have been utilized for these polymer/ionic liquids based ionogels. Polyvinylidene fluoride (PVDF) has been on top of the line as a matrix material for polymer based ionogels owing to its stability, aging and chemical resistance and mechanical strength. This review is primarily concerned with the properties of polyvinylidene fluoride based ionogels with an emphasis on their applications in various domains electrochemical devices, gas separation and liquid/liquid separations.
Collapse
Affiliation(s)
- Rafida Sahrash
- NanoScience and Technology Department, National Centre for Physics, Islamabad, Pakistan.,Department of Physics, University of Gujrat, Gujrat, Pakistan
| | - Asima Siddiqa
- NanoScience and Technology Department, National Centre for Physics, Islamabad, Pakistan
| | - Humaira Razzaq
- NanoScience and Technology Department, National Centre for Physics, Islamabad, Pakistan
| | - Tahir Iqbal
- NanoScience and Technology Department, National Centre for Physics, Islamabad, Pakistan.,Department of Physics, University of Gujrat, Gujrat, Pakistan
| | - Sara Qaisar
- NanoScience and Technology Department, National Centre for Physics, Islamabad, Pakistan
| |
Collapse
|
9
|
Klyba LV, Sanzheeva ER, Shagun LG, Zhilitskaya LV. Matrix-Free NALDI Mass Spectrometric Study of the Major and Minor Products of the Reaction of Imidazole with Bis(iodomethyl)tetramethyldisiloxane. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2018. [DOI: 10.1134/s1070428018090191] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
10
|
3D Printing Cellulose Hydrogels Using LASER Induced Thermal Gelation. JOURNAL OF MANUFACTURING AND MATERIALS PROCESSING 2018. [DOI: 10.3390/jmmp2030042] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
|
11
|
Klyba LV, Sanzheeva ER, Shagun LG, Zhilitskaya LV. Investigation of reaction between 2-methylimidazole and 1,3-bis(iodomethyl)-1,1,3,3-tetramethyldisiloxane by the method NALDI TOF/TOF. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2017. [DOI: 10.1134/s1070428017080127] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
12
|
Shagun VA, Yarosh NO, Shagun LG. Quantum-chemical investigation of the reaction mechanism of 2-methylimidazole with 1,7-diiodo-2,2,6,6-tetramethyl-2,6-disilaheptane. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2017. [DOI: 10.1134/s1070428017050207] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
13
|
Yarosh NO, Zhilitskaya LV, Shagun LG, Dorofeev IA, Larina LI, Klyba LV. Reaction of benzimidazole and benzotriazole with iodomethyl{4-[iodomethyl(dimethyl)silyl]butyl}dimethylsilane. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2016. [DOI: 10.1134/s1070428016080261] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
14
|
Yarosh NO, Zhilitskaya LV, Shagun LG, Dorofeev IA, Larina LI, Klyba LV. Solvent- and base-free synthesis of 1,3-bis(2,6-disilaalkyl)-2-methylimidazolium iodides. MENDELEEV COMMUNICATIONS 2016. [DOI: 10.1016/j.mencom.2016.09.021] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
15
|
Garaga MN, Persson M, Yaghini N, Martinelli A. Local coordination and dynamics of a protic ammonium based ionic liquid immobilized in nano-porous silica micro-particles probed by Raman and NMR spectroscopy. SOFT MATTER 2016; 12:2583-2592. [PMID: 26838120 DOI: 10.1039/c5sm02736e] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Room temperature ionic liquids confined in a solid material, for example, nano-porous silica, are particularly propitious for energy related applications. The aim of this study is to probe the molecular interactions established between the protic ionic liquid diethylmethylammonium methanesulfonate (DEMA-OMs) and silica, where the latter consists of nano-porous micro-particles with pores in the size range of 10 nm. The changes in the local coordination and transport properties induced by the nano-confinement of the ionic liquid are investigated by a combination of Raman and solid-state NMR spectroscopy. In particular, one-dimensional (1D) (1)H and (29)Si and two-dimensional (2D) (29)Si{(1)H} HETOCR solid-state NMR are combined to identify the sites of interaction at the silica-ionic liquid interface. Pulsed field gradient (PFG) NMR experiments are performed to estimate the self-diffusion of both bulk and nano-confined DEMA-OMs. Complementary information on the overall coordination and interaction scheme is achieved by Raman spectroscopy. All these advanced experimental techniques are revealed to be crucial to differentiate between ionic liquid molecules residing in the inter- or intra-particle domains.
Collapse
Affiliation(s)
- Mounesha N Garaga
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, 412 96 Gothenburg, Sweden.
| | | | | | | |
Collapse
|
16
|
Zhao N, Liu Y, Zhao X, Song H. Liquid crystal self-assembly of halloysite nanotubes in ionic liquids: a novel soft nanocomposite ionogel electrolyte with high anisotropic ionic conductivity and thermal stability. NANOSCALE 2016; 8:1545-1554. [PMID: 26681209 DOI: 10.1039/c5nr06888f] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We report a novel class of liquid crystalline (LC) nanohybrid ionogels fabricated via self-assembly of natural halloysite nanotubes (HNTs) in ionic liquids (ILs). The obtained ionogels are very stable and nonvolatile and show LC phases over a wide temperature range. Remarkably, the nanocomposite ionogels exhibit high anisotropic ionic conductivity after shear, and their room temperature ionic conductivity can reach 3.8 × 10(-3) S cm(-1) for aligned nanotubes perpendicular to the electrode even when the HNTs content increases to 40 wt%, which is 380 times higher than that obtained for aligned nanotubes parallel to the electrode, which is 1.0 × 10(-5) S cm(-1). Crucially, the obtained LC nanocomposite ionogels have very high thermal stability, which can sustain 400 °C thermal treatment. The findings will promote the development of novel nanocomposite ionogel electrolytes with faster ion transport and larger anisotropic conductivity.
Collapse
Affiliation(s)
- Ningning Zhao
- College of Chemistry & Environmental Science, Hebei University, Baoding, Hebei Province 071002, P. R. China.
| | - Yulin Liu
- College of Chemistry & Environmental Science, Hebei University, Baoding, Hebei Province 071002, P. R. China.
| | - Xiaomeng Zhao
- College of Chemistry & Environmental Science, Hebei University, Baoding, Hebei Province 071002, P. R. China.
| | - Hongzan Song
- College of Chemistry & Environmental Science, Hebei University, Baoding, Hebei Province 071002, P. R. China.
| |
Collapse
|
17
|
Voisin H, Aimé C, Coradin T. Understanding and Tuning Bioinorganic Interfaces for the Design of Bionanocomposites. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201500403] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
|
18
|
Huang H, Li W, Wang H, Zeng X, Wang Q, Yang Y. Conducting hydrogels of tetraaniline-g-poly(vinyl alcohol) in situ reinforced by supramolecular nanofibers. ACS APPLIED MATERIALS & INTERFACES 2014; 6:1595-1600. [PMID: 24443880 DOI: 10.1021/am4043799] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Novel conducting hydrogels (PVA-TA) with dual network structures were synthesized by the grafting reaction of tetraaniline (TA) into the main chains of poly(vinyl alcohol) and in situ reinforced by self-assembly of a sorbitol derivative as the gelator. The chemical structure of the PVA-TA hydrogels was characterized by using FT-IR and NMR. The mechanical strength of the PVA-TA hydrogels was strongly improved due to the presence of supramolecular nanofibers. For instance, the compressive and tensile strengths of supramolecular nanofiber-reinforced hydrogels were, respectively, 10 times and 5 times higher than those of PVA-TA hydrogels. Their storage modulus (G') and loss modulus (G″) were 5 times and 21 times higher than those of PVA-TA hydrogels, respectively. Cyclic voltammetry and conductivity measurements indicated that the electroactivity of reinforced hydrogels is not influenced by the presence of supramolecular nanofibers.
Collapse
Affiliation(s)
- Huabo Huang
- Key Laboratory for Large-Format Battery Materials and Systems, Ministry of Education, and ‡School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology , Wuhan 430074, China
| | | | | | | | | | | |
Collapse
|
19
|
Xiao X, Lu S, Qi B, Zeng C, Yuan Z, Yu J. Enhancing the thermal and mechanical properties of epoxy resins by addition of a hyperbranched aromatic polyamide grown on microcrystalline cellulose fibers. RSC Adv 2014. [DOI: 10.1039/c3ra45732j] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
|