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DC Field | Value | Language |
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dc.citation.endPage | 125 | - |
dc.citation.startPage | 116 | - |
dc.citation.title | COMPOSITES SCIENCE AND TECHNOLOGY | - |
dc.citation.volume | 147 | - |
dc.contributor.author | Newcomb, Bradley A. | - |
dc.contributor.author | Chae, Han Gi | - |
dc.contributor.author | Thomson, Lindsey | - |
dc.contributor.author | Luo, Jeffrey | - |
dc.contributor.author | Baek, Jong-Beom | - |
dc.contributor.author | Kumar, Satish | - |
dc.date.accessioned | 2023-12-21T22:08:23Z | - |
dc.date.available | 2023-12-21T22:08:23Z | - |
dc.date.created | 2017-07-05 | - |
dc.date.issued | 2017-07 | - |
dc.description.abstract | Poly(ether ketone) (PEK)/carbon nanotube (CNT) composite fibers have been produced using dry-jet wet spinning. Carbon nanofibers (CNF), few-walled carbon nanotubes (FWNT), and multi-walled nanotubes (MWNT) have been utilized as nanofillers, with few-walled carbon nanotube loadings as high as 28 wt%. The interfacial strength of the PEK/FWNT and PEK/MWNT fibers were evaluated through the monitoring of the G-mode Raman peak shift as a function of fiber strain. Interfacial shear strengths as high as 14.2 MPa were measured for the PEK/FWNT fiber with 28 wt% CNT loading, a 1320% increase as compared to the PEK/MWNT fiber with 5 wt% loading (1.0 MPa). Tg of the PEK/FWNT fibers increased by 19 °C as the FWNT loading was increased from 5 wt% to 28 wt%. A second peak in the tan δ behavior of all PEK/CNT fibers was also observed. This second tan δ peak (T ∼ 240 °C-250 °C) is attributed to the α*-transition (crystal-crystal slip) in the PEK crystalline regions, and its presence is more pronounced (higher magnitude of tan δ) in all PEK/FWNT fibers as compared to PEK/MWNT and PEK/CNF fibers. FWNTs are restricting the mobility of the amorphous PEK as evidenced by the increasing Tg. Enhanced PEK crystal-crystal slip corresponds to increasing large scale chain mobility in the crystalline regions of the PEK at Tα*. We propose a model which correlates the increase in PEK-FWNT interfacial shear strength to an increase in large scale chain mobility where crystal-crystal slip precedes failure of PEK/CNT interface at Tα* for the PEK/FWNT fibers. | - |
dc.identifier.bibliographicCitation | COMPOSITES SCIENCE AND TECHNOLOGY, v.147, pp.116 - 125 | - |
dc.identifier.doi | 10.1016/j.compscitech.2017.05.011 | - |
dc.identifier.issn | 0266-3538 | - |
dc.identifier.scopusid | 2-s2.0-85019380892 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/22309 | - |
dc.identifier.url | http://www.sciencedirect.com/science/article/pii/S0266353816309186 | - |
dc.identifier.wosid | 000403986000015 | - |
dc.language | 영어 | - |
dc.publisher | ELSEVIER SCI LTD | - |
dc.title | Reinforcement efficiency of carbon nanotubes and their effect on crystal-crystal slip in poly(ether ketone)/carbon nanotube composite fibers | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Composites | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | Nanocomposites | - |
dc.subject.keywordAuthor | Thermal properties | - |
dc.subject.keywordAuthor | Interfacial strength | - |
dc.subject.keywordAuthor | Stress transfer | - |
dc.subject.keywordPlus | INTERFACIAL STRESS TRANSFER | - |
dc.subject.keywordPlus | ETHER KETONE) | - |
dc.subject.keywordPlus | RAMAN-SPECTROSCOPY | - |
dc.subject.keywordPlus | GLASS-TRANSITION | - |
dc.subject.keywordPlus | SHEAR-STRENGTH | - |
dc.subject.keywordPlus | NANOCOMPOSITES | - |
dc.subject.keywordPlus | NANOFIBERS | - |
dc.subject.keywordPlus | POLYACRYLONITRILE | - |
dc.subject.keywordPlus | ORIENTATION | - |
dc.subject.keywordPlus | BEHAVIOR | - |
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