Structures, electrical, and dielectric properties of PVDF-based nanocomposite films reinforced with neat multi-walled carbon nanotube
DC Field | Value | Language |
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dc.contributor.author | Kim, Il-Hwan | - |
dc.contributor.author | Baik, Doo Hyun | - |
dc.contributor.author | Jeong, Young Gyu | - |
dc.date.accessioned | 2024-02-27T16:31:29Z | - |
dc.date.available | 2024-02-27T16:31:29Z | - |
dc.date.issued | 2012-09 | - |
dc.identifier.issn | 1598-5032 | - |
dc.identifier.issn | 2092-7673 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/kumoh/handle/2020.sw.kumoh/28137 | - |
dc.description.abstract | We report, herein, on the structures, melting/crystallization, electrical, and dielectric properties of poly (vinylidene fluoride) (PVDF) nanocomposites reinforced with a neat multiwalled carbon nanotube (MWCNT). For our purposes, PVDF/MWCNT nanocomposite films with a wide range of MWCNT contents (0.0-20.0 wt%) are prepared via ultrasonicated solution-mixing and melt-compression methods. It is found that MWCNTs become well dispersed in nanocomposites by wrapping them with PVDF chains. The relative content of beta-phase to alpha-phase crystals of a PVDF matrix is higher for the nanocomposite films with higher MWCNT content; although, the overall crystallinity of the nanocomposites is almost identical, irrespective of the MWCNT content. The electrical conductivity and dielectric permittivity of the nanocomposites as a function of frequency are strongly dependent on the MWCNT content. The electrical percolation threshold of PVDF/MWCNT nanocomposites is formed between 2.0 and 5.0 wt% MWCNT. The neat PVDF and nanocomposites with low MWCNT contents of 0.2 and 1.0 wt% are electrically insulating materials (similar to 10(-9) S/cm at 10(2) Hz) with low dielectric permittivity of 9-28; while the nanocomposites with high MWCNT contents of 5.0-20.0 wt% have relatively high electrical conductivity values (10(-4 similar to)10(-2) S/cm at 10(2) Hz). In contrast, the nanocomposite with 2.0 wt% MWCNT has a huge dielectric permittivity of similar to 6520 at 10(2) Hz, although it has relatively low electrical conductivity of similar to 10(-8) S/cm at 10(2) Hz. The huge dielectric permittivity of the nanocomposite with 2.0 wt% MWCNT could be caused by charge accumulation at the interfacial layers between PVDF chains and MWCNTs in the vicinity of the electrical percolation threshold. | - |
dc.format.extent | 8 | - |
dc.language | 영어 | - |
dc.language.iso | ENG | - |
dc.publisher | POLYMER SOC KOREA | - |
dc.title | Structures, electrical, and dielectric properties of PVDF-based nanocomposite films reinforced with neat multi-walled carbon nanotube | - |
dc.type | Article | - |
dc.publisher.location | 대한민국 | - |
dc.identifier.doi | 10.1007/s13233-012-0064-8 | - |
dc.identifier.wosid | 000308549600005 | - |
dc.identifier.bibliographicCitation | MACROMOLECULAR RESEARCH, v.20, no.9, pp 920 - 927 | - |
dc.citation.title | MACROMOLECULAR RESEARCH | - |
dc.citation.volume | 20 | - |
dc.citation.number | 9 | - |
dc.citation.startPage | 920 | - |
dc.citation.endPage | 927 | - |
dc.type.docType | Article | - |
dc.identifier.kciid | ART001695979 | - |
dc.description.isOpenAccess | N | - |
dc.description.journalRegisteredClass | sci | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.description.journalRegisteredClass | kci | - |
dc.relation.journalResearchArea | Polymer Science | - |
dc.relation.journalWebOfScienceCategory | Polymer Science | - |
dc.subject.keywordPlus | POLYMER NANOCOMPOSITES | - |
dc.subject.keywordPlus | COMPOSITES | - |
dc.subject.keywordPlus | ACTUATORS | - |
dc.subject.keywordPlus | BLENDS | - |
dc.subject.keywordPlus | DISPERSION | - |
dc.subject.keywordPlus | CONSTANT | - |
dc.subject.keywordPlus | SENSORS | - |
dc.subject.keywordPlus | MATRIX | - |
dc.subject.keywordPlus | MELT | - |
dc.subject.keywordAuthor | poly(vinylidene fluoride) | - |
dc.subject.keywordAuthor | multi-walled carbon nanotube | - |
dc.subject.keywordAuthor | nanocomposite | - |
dc.subject.keywordAuthor | dielectric property | - |
dc.subject.keywordAuthor | electrical property | - |
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