The Experts below are selected from a list of 318 Experts worldwide ranked by ideXlab platform
Jang Kyo Kim - One of the best experts on this subject based on the ideXlab platform.
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highly aligned ultralarge size reduced graphene oxide polyurethane nanocomposites mechanical properties and Moisture Permeability
Composites Part A-applied Science and Manufacturing, 2013Co-Authors: Nariman Yousefi, Mohsen Moazzami Gudarzi, Qingbin Zheng, Xiuyi Lin, Xi Shen, Jingjing Jia, Farhad Sharif, Jang Kyo KimAbstract:Abstract Polyurethane (PU) nanocomposite films containing highly-aligned graphene sheets are produced. Aqueous dispersion of ultralarge-size graphene oxide (GO) is in situ reduced in waterborne polyurethane, resulting in fine dispersion and high degree of orientation of graphene sheets, especially at high graphene contents. The PU/reduced GO nanocomposites present remarkable 21- and 9-fold increases in tensile modulus and strength, respectively, with 3 wt.% graphene content. The agreement between the experiments and theoretical predictions for tensile modulus proves that the graphene sheets are indeed dispersed individually on the molecular scale and oriented in the polymer matrix to form a layered structure. The Moisture Permeability of the nanocomposites presents a systematic decrease with increasing graphene content, clearly indicating the impermeable graphene sheets acting as Moisture barrier. The synergy arising from the very high aspect ratio and horizontal alignment of the graphene sheets is responsible for this finding.
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Highly aligned, ultralarge-size reduced graphene oxide/polyurethane nanocomposites: Mechanical properties and Moisture Permeability
Composites Part A: Applied Science and Manufacturing, 2013Co-Authors: Nariman Yousefi, Mohsen Moazzami Gudarzi, Qingbin Zheng, Xiuyi Lin, Xi Shen, Jingjing Jia, Farhad Sharif, Jang Kyo KimAbstract:Abstract Polyurethane (PU) nanocomposite films containing highly-aligned graphene sheets are produced. Aqueous dispersion of ultralarge-size graphene oxide (GO) is in situ reduced in waterborne polyurethane, resulting in fine dispersion and high degree of orientation of graphene sheets, especially at high graphene contents. The PU/reduced GO nanocomposites present remarkable 21- and 9-fold increases in tensile modulus and strength, respectively, with 3 wt.% graphene content. The agreement between the experiments and theoretical predictions for tensile modulus proves that the graphene sheets are indeed dispersed individually on the molecular scale and oriented in the polymer matrix to form a layered structure. The Moisture Permeability of the nanocomposites presents a systematic decrease with increasing graphene content, clearly indicating the impermeable graphene sheets acting as Moisture barrier. The synergy arising from the very high aspect ratio and horizontal alignment of the graphene sheets is responsible for this finding.
Mohsen Moazzami Gudarzi - One of the best experts on this subject based on the ideXlab platform.
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highly aligned ultralarge size reduced graphene oxide polyurethane nanocomposites mechanical properties and Moisture Permeability
Composites Part A-applied Science and Manufacturing, 2013Co-Authors: Nariman Yousefi, Mohsen Moazzami Gudarzi, Qingbin Zheng, Xiuyi Lin, Xi Shen, Jingjing Jia, Farhad Sharif, Jang Kyo KimAbstract:Abstract Polyurethane (PU) nanocomposite films containing highly-aligned graphene sheets are produced. Aqueous dispersion of ultralarge-size graphene oxide (GO) is in situ reduced in waterborne polyurethane, resulting in fine dispersion and high degree of orientation of graphene sheets, especially at high graphene contents. The PU/reduced GO nanocomposites present remarkable 21- and 9-fold increases in tensile modulus and strength, respectively, with 3 wt.% graphene content. The agreement between the experiments and theoretical predictions for tensile modulus proves that the graphene sheets are indeed dispersed individually on the molecular scale and oriented in the polymer matrix to form a layered structure. The Moisture Permeability of the nanocomposites presents a systematic decrease with increasing graphene content, clearly indicating the impermeable graphene sheets acting as Moisture barrier. The synergy arising from the very high aspect ratio and horizontal alignment of the graphene sheets is responsible for this finding.
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Highly aligned, ultralarge-size reduced graphene oxide/polyurethane nanocomposites: Mechanical properties and Moisture Permeability
Composites Part A: Applied Science and Manufacturing, 2013Co-Authors: Nariman Yousefi, Mohsen Moazzami Gudarzi, Qingbin Zheng, Xiuyi Lin, Xi Shen, Jingjing Jia, Farhad Sharif, Jang Kyo KimAbstract:Abstract Polyurethane (PU) nanocomposite films containing highly-aligned graphene sheets are produced. Aqueous dispersion of ultralarge-size graphene oxide (GO) is in situ reduced in waterborne polyurethane, resulting in fine dispersion and high degree of orientation of graphene sheets, especially at high graphene contents. The PU/reduced GO nanocomposites present remarkable 21- and 9-fold increases in tensile modulus and strength, respectively, with 3 wt.% graphene content. The agreement between the experiments and theoretical predictions for tensile modulus proves that the graphene sheets are indeed dispersed individually on the molecular scale and oriented in the polymer matrix to form a layered structure. The Moisture Permeability of the nanocomposites presents a systematic decrease with increasing graphene content, clearly indicating the impermeable graphene sheets acting as Moisture barrier. The synergy arising from the very high aspect ratio and horizontal alignment of the graphene sheets is responsible for this finding.
Nariman Yousefi - One of the best experts on this subject based on the ideXlab platform.
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highly aligned ultralarge size reduced graphene oxide polyurethane nanocomposites mechanical properties and Moisture Permeability
Composites Part A-applied Science and Manufacturing, 2013Co-Authors: Nariman Yousefi, Mohsen Moazzami Gudarzi, Qingbin Zheng, Xiuyi Lin, Xi Shen, Jingjing Jia, Farhad Sharif, Jang Kyo KimAbstract:Abstract Polyurethane (PU) nanocomposite films containing highly-aligned graphene sheets are produced. Aqueous dispersion of ultralarge-size graphene oxide (GO) is in situ reduced in waterborne polyurethane, resulting in fine dispersion and high degree of orientation of graphene sheets, especially at high graphene contents. The PU/reduced GO nanocomposites present remarkable 21- and 9-fold increases in tensile modulus and strength, respectively, with 3 wt.% graphene content. The agreement between the experiments and theoretical predictions for tensile modulus proves that the graphene sheets are indeed dispersed individually on the molecular scale and oriented in the polymer matrix to form a layered structure. The Moisture Permeability of the nanocomposites presents a systematic decrease with increasing graphene content, clearly indicating the impermeable graphene sheets acting as Moisture barrier. The synergy arising from the very high aspect ratio and horizontal alignment of the graphene sheets is responsible for this finding.
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Highly aligned, ultralarge-size reduced graphene oxide/polyurethane nanocomposites: Mechanical properties and Moisture Permeability
Composites Part A: Applied Science and Manufacturing, 2013Co-Authors: Nariman Yousefi, Mohsen Moazzami Gudarzi, Qingbin Zheng, Xiuyi Lin, Xi Shen, Jingjing Jia, Farhad Sharif, Jang Kyo KimAbstract:Abstract Polyurethane (PU) nanocomposite films containing highly-aligned graphene sheets are produced. Aqueous dispersion of ultralarge-size graphene oxide (GO) is in situ reduced in waterborne polyurethane, resulting in fine dispersion and high degree of orientation of graphene sheets, especially at high graphene contents. The PU/reduced GO nanocomposites present remarkable 21- and 9-fold increases in tensile modulus and strength, respectively, with 3 wt.% graphene content. The agreement between the experiments and theoretical predictions for tensile modulus proves that the graphene sheets are indeed dispersed individually on the molecular scale and oriented in the polymer matrix to form a layered structure. The Moisture Permeability of the nanocomposites presents a systematic decrease with increasing graphene content, clearly indicating the impermeable graphene sheets acting as Moisture barrier. The synergy arising from the very high aspect ratio and horizontal alignment of the graphene sheets is responsible for this finding.
Jingjing Jia - One of the best experts on this subject based on the ideXlab platform.
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highly aligned ultralarge size reduced graphene oxide polyurethane nanocomposites mechanical properties and Moisture Permeability
Composites Part A-applied Science and Manufacturing, 2013Co-Authors: Nariman Yousefi, Mohsen Moazzami Gudarzi, Qingbin Zheng, Xiuyi Lin, Xi Shen, Jingjing Jia, Farhad Sharif, Jang Kyo KimAbstract:Abstract Polyurethane (PU) nanocomposite films containing highly-aligned graphene sheets are produced. Aqueous dispersion of ultralarge-size graphene oxide (GO) is in situ reduced in waterborne polyurethane, resulting in fine dispersion and high degree of orientation of graphene sheets, especially at high graphene contents. The PU/reduced GO nanocomposites present remarkable 21- and 9-fold increases in tensile modulus and strength, respectively, with 3 wt.% graphene content. The agreement between the experiments and theoretical predictions for tensile modulus proves that the graphene sheets are indeed dispersed individually on the molecular scale and oriented in the polymer matrix to form a layered structure. The Moisture Permeability of the nanocomposites presents a systematic decrease with increasing graphene content, clearly indicating the impermeable graphene sheets acting as Moisture barrier. The synergy arising from the very high aspect ratio and horizontal alignment of the graphene sheets is responsible for this finding.
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Highly aligned, ultralarge-size reduced graphene oxide/polyurethane nanocomposites: Mechanical properties and Moisture Permeability
Composites Part A: Applied Science and Manufacturing, 2013Co-Authors: Nariman Yousefi, Mohsen Moazzami Gudarzi, Qingbin Zheng, Xiuyi Lin, Xi Shen, Jingjing Jia, Farhad Sharif, Jang Kyo KimAbstract:Abstract Polyurethane (PU) nanocomposite films containing highly-aligned graphene sheets are produced. Aqueous dispersion of ultralarge-size graphene oxide (GO) is in situ reduced in waterborne polyurethane, resulting in fine dispersion and high degree of orientation of graphene sheets, especially at high graphene contents. The PU/reduced GO nanocomposites present remarkable 21- and 9-fold increases in tensile modulus and strength, respectively, with 3 wt.% graphene content. The agreement between the experiments and theoretical predictions for tensile modulus proves that the graphene sheets are indeed dispersed individually on the molecular scale and oriented in the polymer matrix to form a layered structure. The Moisture Permeability of the nanocomposites presents a systematic decrease with increasing graphene content, clearly indicating the impermeable graphene sheets acting as Moisture barrier. The synergy arising from the very high aspect ratio and horizontal alignment of the graphene sheets is responsible for this finding.
Farhad Sharif - One of the best experts on this subject based on the ideXlab platform.
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highly aligned ultralarge size reduced graphene oxide polyurethane nanocomposites mechanical properties and Moisture Permeability
Composites Part A-applied Science and Manufacturing, 2013Co-Authors: Nariman Yousefi, Mohsen Moazzami Gudarzi, Qingbin Zheng, Xiuyi Lin, Xi Shen, Jingjing Jia, Farhad Sharif, Jang Kyo KimAbstract:Abstract Polyurethane (PU) nanocomposite films containing highly-aligned graphene sheets are produced. Aqueous dispersion of ultralarge-size graphene oxide (GO) is in situ reduced in waterborne polyurethane, resulting in fine dispersion and high degree of orientation of graphene sheets, especially at high graphene contents. The PU/reduced GO nanocomposites present remarkable 21- and 9-fold increases in tensile modulus and strength, respectively, with 3 wt.% graphene content. The agreement between the experiments and theoretical predictions for tensile modulus proves that the graphene sheets are indeed dispersed individually on the molecular scale and oriented in the polymer matrix to form a layered structure. The Moisture Permeability of the nanocomposites presents a systematic decrease with increasing graphene content, clearly indicating the impermeable graphene sheets acting as Moisture barrier. The synergy arising from the very high aspect ratio and horizontal alignment of the graphene sheets is responsible for this finding.
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Highly aligned, ultralarge-size reduced graphene oxide/polyurethane nanocomposites: Mechanical properties and Moisture Permeability
Composites Part A: Applied Science and Manufacturing, 2013Co-Authors: Nariman Yousefi, Mohsen Moazzami Gudarzi, Qingbin Zheng, Xiuyi Lin, Xi Shen, Jingjing Jia, Farhad Sharif, Jang Kyo KimAbstract:Abstract Polyurethane (PU) nanocomposite films containing highly-aligned graphene sheets are produced. Aqueous dispersion of ultralarge-size graphene oxide (GO) is in situ reduced in waterborne polyurethane, resulting in fine dispersion and high degree of orientation of graphene sheets, especially at high graphene contents. The PU/reduced GO nanocomposites present remarkable 21- and 9-fold increases in tensile modulus and strength, respectively, with 3 wt.% graphene content. The agreement between the experiments and theoretical predictions for tensile modulus proves that the graphene sheets are indeed dispersed individually on the molecular scale and oriented in the polymer matrix to form a layered structure. The Moisture Permeability of the nanocomposites presents a systematic decrease with increasing graphene content, clearly indicating the impermeable graphene sheets acting as Moisture barrier. The synergy arising from the very high aspect ratio and horizontal alignment of the graphene sheets is responsible for this finding.