There are no files associated with this item.
Full metadata record
DC Field | Value | Language |
---|---|---|
dc.citation.startPage | 146394 | - |
dc.citation.title | CHEMICAL ENGINEERING JOURNAL | - |
dc.citation.volume | 475 | - |
dc.contributor.author | Song, Juhyeon | - |
dc.contributor.author | Kim, Hyeonjeong | - |
dc.contributor.author | Lee, Seung Swan | - |
dc.contributor.author | Lee, Ohuk | - |
dc.contributor.author | Kim, Hyo Jeong | - |
dc.contributor.author | Jeong Yong | - |
dc.contributor.author | Chae, Han Gi | - |
dc.contributor.author | Koo, Jaseung | - |
dc.contributor.author | Yu, Seunggun | - |
dc.contributor.author | Eom, Young | - |
dc.date.accessioned | 2023-12-21T11:41:37Z | - |
dc.date.available | 2023-12-21T11:41:37Z | - |
dc.date.created | 2023-10-05 | - |
dc.date.issued | 2023-11 | - |
dc.description.abstract | Although aramid nanofiber paper (ANF-P) is a promising alternative to conventional electrical insulation paper, its performance requires further optimization. This study aimed to establish an optimal nanopaper-fabrication process by using rheology-controlled suspensions to achieve remarkably strengthened pure ANF-Ps. The ANF-P was fabricated in two steps: 1) preparing ANF suspension (ANF-SH₂O) by precipitating ANF/dimethyl sulfoxide (DMSO) (ANF-DDMSO), and 2) preparing ANF-P by vacuum-filtrating ANF-SH2O. Under an in-situ homogenization-assisted precipitation in step 1, the concentration of ANF-DDMSO predominantly affected both the suspension stability and nanopaper performance. Semi-dilute ANF-DDMSOs (0.1–0.7 wt%) produced stable suspensions and strong ANF-Ps (mechanical modulus and strength of 4.5–5.1 GPa and 221.4–243.4 MPa, respectively), while concentrated ANF-DDMSOs (1.0–2.0 wt%) yielded unstable suspensions and weak ANF-Ps (0.3–3.2 GPa and 12.6–139.0 MPa, respectively). The former ANF-SH2Os comprised branched or sheet-like precipitated particles that were favorable for structuring the paper, whereas the latter ones consisted of irregular particles. Particularly at a thickness of 17 μm, ANF-Ps from 0.3 wt% ANF-DDMSO exhibited record-high mechanical performances (modulus, strength, and toughness of 7.4 GPa, 382.3 MPa, and 32.5 MJ∙m−3, respectively) compared to previously reported pure ANF-Ps. In addition, ANF-Ps exhibited a remarkable dielectric breakdown strength of ∼200.3 kV∙mm−1. Rheologically, ANF-SH2Os from semi-dilute ANF-DDMSOs provided a higher scaling exponent of elastic modulus, indicating a higher degree of particle entanglement. Moreover, the strain-induced modulus overshoot phenomena revealed a highly structured suspension network. Therefore, linear- and nonlinear-suspension rheology provide a fundamental guideline for fortifying the foundation of industrial production of high-performance nanopapers. | - |
dc.identifier.bibliographicCitation | CHEMICAL ENGINEERING JOURNAL, v.475, pp.146394 | - |
dc.identifier.doi | 10.1016/j.cej.2023.146394 | - |
dc.identifier.issn | 1385-8947 | - |
dc.identifier.scopusid | 2-s2.0-85173243960 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/65898 | - |
dc.identifier.url | https://www.sciencedirect.com/science/article/pii/S1385894723051252?via%3Dihub | - |
dc.identifier.wosid | 001098832600001 | - |
dc.language | 영어 | - |
dc.publisher | Elsevier BV | - |
dc.title | Rheology-tailored stable aramid nanofiber suspensions for fabricating ultra-strong and electrically insulated additive-free nanopapers | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Engineering, Environmental;Engineering, Chemical | - |
dc.relation.journalResearchArea | Engineering | - |
dc.type.docType | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | Aramid nanofiber paper | - |
dc.subject.keywordAuthor | Mechanical performance | - |
dc.subject.keywordAuthor | Dielectric breakdown strength | - |
dc.subject.keywordAuthor | Suspension | - |
dc.subject.keywordAuthor | Rheology | - |
dc.subject.keywordPlus | MECHANICAL-PROPERTIES | - |
dc.subject.keywordPlus | COMPOSITE ELECTRODES | - |
dc.subject.keywordPlus | BREAKDOWN STRENGTH | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.subject.keywordPlus | SOLVENT | - |
dc.subject.keywordPlus | NANOCOMPOSITES | - |
dc.subject.keywordPlus | NANOMATERIALS | - |
dc.subject.keywordPlus | TRANSPARENT | - |
dc.subject.keywordPlus | DEPENDENCE | - |
dc.subject.keywordPlus | SEPARATION | - |
Items in Repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Tel : 052-217-1404 / Email : scholarworks@unist.ac.kr
Copyright (c) 2023 by UNIST LIBRARY. All rights reserved.
ScholarWorks@UNIST was established as an OAK Project for the National Library of Korea.