DC Field | Value | Language |
---|---|---|
dc.contributor.author | Shim, Yul Hui | ko |
dc.contributor.author | Ahn, Hyungju | ko |
dc.contributor.author | Lee, Sangsul | ko |
dc.contributor.author | Kim, Sang Ouk | ko |
dc.contributor.author | Kim, So Youn | ko |
dc.date.accessioned | 2021-09-26T00:50:35Z | - |
dc.date.available | 2021-09-26T00:50:35Z | - |
dc.date.created | 2021-09-24 | - |
dc.date.created | 2021-09-24 | - |
dc.date.issued | 2021-08 | - |
dc.identifier.citation | ACS NANO, v.15, no.8, pp.13453 - 13462 | - |
dc.identifier.issn | 1936-0851 | - |
dc.identifier.uri | http://hdl.handle.net/10203/287847 | - |
dc.description.abstract | Graphene oxide (GO) has become a key component for high-performance carbon-based films or fibers based on its dispersibility and liquid crystallinity in an aqueous suspension. While the superior performance of GO-based fiber relies on their alignment at the submicrometer level, fine control of the microstructure is often hampered, in particular, under dynamic nature of GO-processing involving shear. Here, we systemically studied the structural variation of GO suspensions under shear conditions via in situ rheo-scattering and shear-polarized optical microscope analysis. The evolution of GO alignment under shear is indeed complex. However, we found that the shear-dependent structural equilibrium exists. GO showed a nonlinear structural transition with shear, yet there is a "universal" shear threshold for the best alignment, resulting in graphene fiber achieved an improvement in mechanical properties by similar to 54% without any chemical modification. This finding challenges the conventional concept that high shear stress is required for the good alignment of particles and their best performance. | - |
dc.language | English | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.title | Universal Alignment of Graphene Oxide in Suspensions and Fibers | - |
dc.type | Article | - |
dc.identifier.wosid | 000693105500079 | - |
dc.identifier.scopusid | 2-s2.0-85112517094 | - |
dc.type.rims | ART | - |
dc.citation.volume | 15 | - |
dc.citation.issue | 8 | - |
dc.citation.beginningpage | 13453 | - |
dc.citation.endingpage | 13462 | - |
dc.citation.publicationname | ACS NANO | - |
dc.identifier.doi | 10.1021/acsnano.1c03954 | - |
dc.contributor.localauthor | Kim, Sang Ouk | - |
dc.contributor.nonIdAuthor | Shim, Yul Hui | - |
dc.contributor.nonIdAuthor | Ahn, Hyungju | - |
dc.contributor.nonIdAuthor | Lee, Sangsul | - |
dc.contributor.nonIdAuthor | Kim, So Youn | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | graphene oxide | - |
dc.subject.keywordAuthor | liquid crystal | - |
dc.subject.keywordAuthor | shear | - |
dc.subject.keywordAuthor | alignment | - |
dc.subject.keywordAuthor | rheo-SAXS | - |
dc.subject.keywordPlus | NEMATIC LIQUID-CRYSTALS | - |
dc.subject.keywordPlus | LANDAU THEORY | - |
dc.subject.keywordPlus | SHEAR | - |
dc.subject.keywordPlus | FLOW | - |
dc.subject.keywordPlus | BEHAVIOR | - |
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