Morphology and processing of aligned carbon nanotube carbon matrix nanocomposites
Intrinsic and scale-dependent properties of carbon nanotubes (CNTs) have led aligned CNT architectures to emerge as promising candidates for next-generation multifunctional applications. Enhanced operating regimes motivate the study of CNT-based aligned nanofiber carbon matrix nanocomposites (CNT A-...
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| Format: | Article |
| Language: | en_US |
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Elsevier
2017
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| Online Access: | http://hdl.handle.net/1721.1/110454 https://orcid.org/0000-0003-3229-7315 https://orcid.org/0000-0003-3530-5819 |
| _version_ | 1826206178808430592 |
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| author | Stein, Itai Y Wardle, Brian L |
| author2 | Massachusetts Institute of Technology. Department of Aeronautics and Astronautics |
| author_facet | Massachusetts Institute of Technology. Department of Aeronautics and Astronautics Stein, Itai Y Wardle, Brian L |
| author_sort | Stein, Itai Y |
| collection | MIT |
| description | Intrinsic and scale-dependent properties of carbon nanotubes (CNTs) have led aligned CNT architectures to emerge as promising candidates for next-generation multifunctional applications. Enhanced operating regimes motivate the study of CNT-based aligned nanofiber carbon matrix nanocomposites (CNT A-CMNCs). However, in order to tailor the material properties of CNT A-CMNCs, porosity control of the carbon matrix is required. Such control is usually achieved via multiple liquid precursor infusions and pyrolyzations. Here we report a model that allows the quantitative prediction of the CNT A-CMNC density and matrix porosity as a function of number of processing steps. The experimental results indicate that the matrix porosity of A-CMNCs comprised of ∼1% aligned CNTs decreased from ∼61% to ∼55% after a second polymer infusion and pyrolyzation. The model predicts that diminishing returns for porosity reduction will occur after 4 processing steps (matrix porosity of ∼51%), and that >10 processing steps are required for matrix porosity <50%. Using this model, prediction of the processing necessary for the fabrication of liquid precursor derived A-CMNC architectures, with possible application to other nanowire/nanofiber systems, is enabled for a variety of high value applications. |
| first_indexed | 2024-09-23T13:25:21Z |
| format | Article |
| id | mit-1721.1/110454 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T13:25:21Z |
| publishDate | 2017 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | mit-1721.1/1104542022-10-01T15:12:53Z Morphology and processing of aligned carbon nanotube carbon matrix nanocomposites Stein, Itai Y Wardle, Brian L Massachusetts Institute of Technology. Department of Aeronautics and Astronautics Massachusetts Institute of Technology. Department of Mechanical Engineering Stein, Itai Y. Stein, Itai Y Wardle, Brian L Intrinsic and scale-dependent properties of carbon nanotubes (CNTs) have led aligned CNT architectures to emerge as promising candidates for next-generation multifunctional applications. Enhanced operating regimes motivate the study of CNT-based aligned nanofiber carbon matrix nanocomposites (CNT A-CMNCs). However, in order to tailor the material properties of CNT A-CMNCs, porosity control of the carbon matrix is required. Such control is usually achieved via multiple liquid precursor infusions and pyrolyzations. Here we report a model that allows the quantitative prediction of the CNT A-CMNC density and matrix porosity as a function of number of processing steps. The experimental results indicate that the matrix porosity of A-CMNCs comprised of ∼1% aligned CNTs decreased from ∼61% to ∼55% after a second polymer infusion and pyrolyzation. The model predicts that diminishing returns for porosity reduction will occur after 4 processing steps (matrix porosity of ∼51%), and that >10 processing steps are required for matrix porosity <50%. Using this model, prediction of the processing necessary for the fabrication of liquid precursor derived A-CMNC architectures, with possible application to other nanowire/nanofiber systems, is enabled for a variety of high value applications. National Science Foundation (U.S.) (Grant CMMI-1130437) 2017-07-05T14:55:34Z 2017-07-05T14:55:34Z 2013-12 2013-09 Article http://purl.org/eprint/type/JournalArticle 0008-6223 http://hdl.handle.net/1721.1/110454 Stein, Itai Y., and Brian L. Wardle. “Morphology and Processing of Aligned Carbon Nanotube Carbon Matrix Nanocomposites.” Carbon 68 (2014): 807–813. https://orcid.org/0000-0003-3229-7315 https://orcid.org/0000-0003-3530-5819 en_US http://dx.doi.org/10.1016/j.carbon.2013.12.001 Carbon Creative Commons Attribution-NonCommercial-NoDerivs License http://creativecommons.org/licenses/by-nc-nd/4.0/ application/pdf Elsevier Itai Y. Stein |
| spellingShingle | Stein, Itai Y Wardle, Brian L Morphology and processing of aligned carbon nanotube carbon matrix nanocomposites |
| title | Morphology and processing of aligned carbon nanotube carbon matrix nanocomposites |
| title_full | Morphology and processing of aligned carbon nanotube carbon matrix nanocomposites |
| title_fullStr | Morphology and processing of aligned carbon nanotube carbon matrix nanocomposites |
| title_full_unstemmed | Morphology and processing of aligned carbon nanotube carbon matrix nanocomposites |
| title_short | Morphology and processing of aligned carbon nanotube carbon matrix nanocomposites |
| title_sort | morphology and processing of aligned carbon nanotube carbon matrix nanocomposites |
| url | http://hdl.handle.net/1721.1/110454 https://orcid.org/0000-0003-3229-7315 https://orcid.org/0000-0003-3530-5819 |
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