Full metadata record
DC Field | Value | Language |
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dc.contributor.author | Ha, Jae Un | - |
dc.contributor.author | Cho, Jangwhan | - |
dc.contributor.author | Yoon, Seongwon | - |
dc.contributor.author | Jang, Min Su | - |
dc.contributor.author | Hassan, Syed Zahid | - |
dc.contributor.author | Kang, Min Gyun | - |
dc.contributor.author | Chung, Dae Sung | - |
dc.date.accessioned | 2019-03-15T01:55:38Z | - |
dc.date.available | 2019-03-15T01:55:38Z | - |
dc.date.created | 2019-03-06 | - |
dc.date.issued | 2019-04 | - |
dc.identifier.issn | 0957-4484 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.11750/9604 | - |
dc.description.abstract | We introduce a strategic approach to synthesize covalntly cross-linked carbon nanotube (CNT)-polymer nanocomposites, which can be applied as a free-standing and flexible organic thermoelectric generator film. Esterification of polyvinyl alcohol (PVA) to render PVA-COOH followed by an amide reaction with single-walled CNTs (SWCNTs) functionalized with amino groups (SWCNT-NH2) yielded a covalently grafted PVA/SWCNT composite film with an excellent dispersion of SWCNTs within the polymer matrix as confirmed using Fourier-transform infrared spectroscopy and scanning electron microscopy. This amide reaction could be further optimized with the addition of a small amount of Triton (TM) X-100, which resulted in a better dispersion of SWCNT prior to the amide condensation reaction. Consequently, a covalently cross-linked PVA/SWCNT composite film showed better Seebeck coefficients than those of previously reported non-covalently, physically wrapped polymer/CNT composite films, resulting in a high power factor up to 275 mu W m(-1) K-2. Furthermore, a covalent amide-linking between PVA and SWCNT yielded a free-standing film (30 x 30 mm) with excellent flexibility and notable shelf stability as confirmed by negligible changes in thermoelectric parameters after bending test for 10 000 times with a bending radius of 2 mm and also shelf stability test in ambient condition without any passivation layer for 30 d. | - |
dc.language | English | - |
dc.publisher | Institute of Physics Publishing | - |
dc.title | Polyvinyl alcohol covalently grafted CNT for free-standing, flexible, and high-performance thermoelectric generator film | - |
dc.type | Article | - |
dc.identifier.doi | 10.1088/1361-6528/ab0121 | - |
dc.identifier.scopusid | 2-s2.0-85061275531 | - |
dc.identifier.bibliographicCitation | Nanotechnology, v.30, no.14 | - |
dc.description.isOpenAccess | FALSE | - |
dc.subject.keywordAuthor | organic thermoelectric generator | - |
dc.subject.keywordAuthor | grafted single-walled carbon nanotube | - |
dc.subject.keywordAuthor | flexible device | - |
dc.subject.keywordPlus | COMPOSITES | - |
dc.citation.number | 14 | - |
dc.citation.title | Nanotechnology | - |
dc.citation.volume | 30 | - |
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