101
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Highly aligned narrow diameter chitosan electrospun nanofibers. JOURNAL OF POLYMER RESEARCH 2013. [DOI: 10.1007/s10965-013-0105-9] [Citation(s) in RCA: 99] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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102
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Preparation and characterization of electro-spun nanofiber membranes and their possible applications in water treatment. Sep Purif Technol 2013. [DOI: 10.1016/j.seppur.2012.09.037] [Citation(s) in RCA: 193] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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103
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Wu L, Zhang Z, Ran J, Zhou D, Li C, Xu T. Advances in proton-exchange membranes for fuel cells: an overview on proton conductive channels (PCCs). Phys Chem Chem Phys 2013; 15:4870-87. [DOI: 10.1039/c3cp50296a] [Citation(s) in RCA: 139] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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104
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Jana S, Cooper A, Ohuchi F, Zhang M. Uniaxially aligned nanofibrous cylinders by electrospinning. ACS APPLIED MATERIALS & INTERFACES 2012; 4:4817-4824. [PMID: 22948088 DOI: 10.1021/am301803b] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Aligned nanofibers have drawn increasing interest for applications in biomedical engineering, electronics, and energy storage systems owing to the unique physicochemical properties provided by their anisotropy and high surface-to-volume ratio. Nevertheless, direct fabrication or assembly of aligned nanofibers into a 3-dimensional standalone construct with practically applicable dimensions presents an enormous challenge. We report a facile method to fabricate aligned nanofibrous cylinders, a widely used geometric form, by electrospinning aligned nanofibers across the gap between a pair of pin electrodes placed apart uniaxially. With this approach, cylindrical nanofibrous constructs of several millimeters in diameter and several centimeters in length can be readily produced. The versatility of the approach was demonstrated with several commonly used polymeric and ceramic materials, including polycaprolactone (PCL), chitosan/PCL, polyvinylidene fluoride, and titania. For a model application in tissue engineering, skeletal muscle cells were cultured on nanofibrous cylinders, which effectively produced highly aligned and densely populated myotubes along the nanofiber orientation, favorable for muscle tissue regeneration. With high structural integrity and stability, these can be directly integrated into devices or implanted in vivo as a standalone construct without the support of a substrate, thus increasing the portability, efficiency, and applicability of aligned nanofibers.
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Affiliation(s)
- Soumen Jana
- Department of Materials Science & Engineering, University of Washington, Seattle, Washington 98195, USA
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105
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Zeng R, Xiao S, Chen L, Chen Y. Hybrid polymers based on sulfonated polynorbornene with enhanced proton conductivity for direct methanol fuel cells. HIGH PERFORM POLYM 2012. [DOI: 10.1177/0954008312451478] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Sulfonated polynorbornene (SPNB) and 3-aminopropyltriethoxysilane (KH550) hybrid cross-linked proton exchange membranes doped with different weight ratio of phosphotungstic acid (PWA) were prepared by a simple sol-gel process. The cross-linked structures led to low methanol permeability and good stability of the nanocomposites. Incorporation of PWA has significantly improved the proton conductivity of the hybrid membrane due to an extra provided conductive proton-conduction pathway to facilitate proton transportation. In particular, the conductivity of SPNB/KH550/PWA25 reached the maximum of 0.02 S.cm−1 at 80°C under the 100% relative humidity condition, and this value is on the same order of magnitude as that of Nafion117. Furthermore, SPNB /KH550/PWA20 owns the lowest proton transport activation energy (8.39 kJ.mol−1).
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Affiliation(s)
- Rong Zeng
- Institute of Polymers, Nanchang University, Nanchang, China
| | - Shuqin Xiao
- Institute of Polymers, Nanchang University, Nanchang, China
| | - Lie Chen
- Institute of Polymers, Nanchang University, Nanchang, China
- Jiangxi Provincial Key Laboratory of New Energy Chemistry, Nanchang University, Nanchang, China
| | - Yiwang Chen
- Institute of Polymers, Nanchang University, Nanchang, China
- Jiangxi Provincial Key Laboratory of New Energy Chemistry, Nanchang University, Nanchang, China
- Department of Chemistry, Nanchang University, Nanchang, China
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106
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Liu JW, Liang HW, Yu SH. Macroscopic-Scale Assembled Nanowire Thin Films and Their Functionalities. Chem Rev 2012; 112:4770-99. [DOI: 10.1021/cr200347w] [Citation(s) in RCA: 248] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Jian-Wei Liu
- Division of Nanomaterials & Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, Department of Chemistry, National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230026, P. R. China
| | - Hai-Wei Liang
- Division of Nanomaterials & Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, Department of Chemistry, National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230026, P. R. China
| | - Shu-Hong Yu
- Division of Nanomaterials & Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, Department of Chemistry, National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230026, P. R. China
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107
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Shen J, Zhang Y, Huang M, Wang W, Xu Z, Yeung KWK, Yi C, Xu M. Study on preparation and properties of novel reactive phenolic hydroxyl-containing polyimides. JOURNAL OF POLYMER RESEARCH 2012. [DOI: 10.1007/s10965-012-9857-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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108
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Seki N, Arai T, Suzuki Y, Kawakami H. Novel polyimide-based electrospun carbon nanofibers prepared using ion-beam irradiation. POLYMER 2012. [DOI: 10.1016/j.polymer.2012.03.026] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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109
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Sahay R, Kumar PS, Sridhar R, Sundaramurthy J, Venugopal J, Mhaisalkar SG, Ramakrishna S. Electrospun composite nanofibers and their multifaceted applications. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm30966a] [Citation(s) in RCA: 234] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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110
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Edmondson D, Cooper A, Jana S, Wood D, Zhang M. Centrifugal electrospinning of highly aligned polymer nanofibers over a large area. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm33877g] [Citation(s) in RCA: 85] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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111
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Liu W, Wang S, Xiao M, Han D, Meng Y. A proton exchange membrane fabricated from a chemically heterogeneous nonwoven with sandwich structure by the program-controlled co-electrospinning process. Chem Commun (Camb) 2012; 48:3415-7. [DOI: 10.1039/c2cc16952e] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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112
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Zhang H, Shen PK. Advances in the high performance polymer electrolyte membranes for fuel cells. Chem Soc Rev 2012; 41:2382-94. [DOI: 10.1039/c2cs15269j] [Citation(s) in RCA: 281] [Impact Index Per Article: 23.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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113
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Wang H, Xu X, Johnson NM, Dandala NKR, Ji HF. High Proton Conductivity of Water Channels in a Highly Ordered Nanowire. Angew Chem Int Ed Engl 2011; 50:12538-41. [DOI: 10.1002/anie.201105118] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2011] [Revised: 10/12/2011] [Indexed: 11/12/2022]
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114
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Wang H, Xu X, Johnson NM, Dandala NKR, Ji HF. High Proton Conductivity of Water Channels in a Highly Ordered Nanowire. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201105118] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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115
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Martwiset S, Jaroensuk K. Electrospinning of poly(vinyl alcohol) and poly(4-styrenesulfonic acid) for fuel cell applications. J Appl Polym Sci 2011. [DOI: 10.1002/app.34839] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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116
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Yao Y, Ji L, Lin Z, Li Y, Alcoutlabi M, Hamouda H, Zhang X. Sulfonated polystyrene fiber network-induced hybrid proton exchange membranes. ACS APPLIED MATERIALS & INTERFACES 2011; 3:3732-3737. [PMID: 21838242 DOI: 10.1021/am2009184] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
A novel type of hybrid membrane was fabricated by incorporating sulfonated polystyrene (S-PS) electrospun fibers into Nafion for the application in proton exchange membrane fuel cells. With the introduction of S-PS fiber mats, a large amount of sulfonic acid groups in Nafion aggregated onto the interfaces between S-PS fibers and the ionomer matrix, forming continuous pathways for facile proton transport. The resultant hybrid membranes had higher proton conductivities than that of recast Nafion, and the conductivities were controlled by selectively adjusting the fiber diameters. Consequently, hybrid membranes fabricated by ionomers, such as Nafion, incorporated with ionic-conducting nanofibers established a promising strategy for the rational design of high-performance proton exchange membranes.
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Affiliation(s)
- Yingfang Yao
- Fiber and Polymer Science Program, Department of Textile Engineering, Chemistry and Science, North Carolina State University, Raleigh, North Carolina 27695-8301, United States
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117
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Choi BG, Hong J, Park YC, Jung DH, Hong WH, Hammond PT, Park H. Innovative polymer nanocomposite electrolytes: nanoscale manipulation of ion channels by functionalized graphenes. ACS NANO 2011; 5:5167-5174. [PMID: 21534602 DOI: 10.1021/nn2013113] [Citation(s) in RCA: 89] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The chemistry and structure of ion channels within the polymer electrolytes are of prime importance for studying the transport properties of electrolytes as well as for developing high-performance electrochemical devices. Despite intensive efforts on the synthesis of polymer electrolytes, few studies have demonstrated enhanced target ion conduction while suppressing unfavorable ion or mass transport because the undesirable transport occurs through an identical pathway. Herein, we report an innovative, chemical strategy for the synthesis of polymer electrolytes whose ion-conducting channels are physically and chemically modulated by the ionic (not electronic) conductive, functionalized graphenes and for a fundamental understanding of ion and mass transport occurring in nanoscale ionic clusters. The functionalized graphenes controlled the state of water by means of nanoscale manipulation of the physical geometry and chemical functionality of ionic channels. Furthermore, the confinement of bound water within the reorganized nanochannels of composite membranes was confirmed by the enhanced proton conductivity at high temperature and the low activation energy for ionic conduction through a Grotthus-type mechanism. The selectively facilitated transport behavior of composite membranes such as high proton conductivity and low methanol crossover was attributed to the confined bound water, resulting in high-performance fuel cells.
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Affiliation(s)
- Bong Gill Choi
- Department of Chemical & Biomolecular Engineering (BK21 program), KAIST, Daejeon 305-701, Republic of Korea
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118
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Jafari A, Jeon JH, Oh IK. Well-aligned Nano-fiberous Membranes Based on Three-pole Electrospinning with Channel Electrode. Macromol Rapid Commun 2011; 32:921-6. [DOI: 10.1002/marc.201100101] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2011] [Revised: 03/30/2011] [Indexed: 11/07/2022]
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119
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Okayasu T, Hirose K, Nishide H. Sulfonic acid polymer-densely grafted poly(ethersulfone)s for a highly proton-conducting membrane. POLYM ADVAN TECHNOL 2011. [DOI: 10.1002/pat.1919] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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120
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Shabani I, Hasani-Sadrabadi MM, Haddadi-Asl V, Soleimani M. Nanofiber-based polyelectrolytes as novel membranes for fuel cell applications. J Memb Sci 2011. [DOI: 10.1016/j.memsci.2010.11.048] [Citation(s) in RCA: 113] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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121
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Bellan LM, Craighead HG. Applications of controlled electrospinning systems. POLYM ADVAN TECHNOL 2010. [DOI: 10.1002/pat.1790] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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122
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Dong B, Gwee L, Salas-de la Cruz D, Winey KI, Elabd YA. Super proton conductive high-purity nafion nanofibers. NANO LETTERS 2010; 10:3785-90. [PMID: 20731365 DOI: 10.1021/nl102581w] [Citation(s) in RCA: 103] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
In this paper, we report the high proton conductivity of a single high-purity Nafion nanofiber (1.5 S/cm), which is an order of magnitude higher than the bulk Nafion film ( approximately 0.1 S/cm). We also observe a nanosize effect, where proton conductivity increases sharply with decreasing fiber diameter. X-ray scattering provides a rationale for these findings, where an oriented ionic morphology was observed in the nanofiber in contrast to the isotropic morphology in the bulk film. This work also demonstrates the successful fabrication of high-purity Nafion nanofibers ( approximately 99.9 wt %) via electrospinning and higher humidity sensitivity for nanofibers compared to the bulk. These results should have a significant impact on fuel cells and sensors.
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Affiliation(s)
- Bin Dong
- Department of Chemical and Biological Engineering, Drexel University, Philadelphia, Pennsylvania 19104, USA
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