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DC Field | Value | Language |
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dc.citation.startPage | 122697 | - |
dc.citation.title | POLYMER | - |
dc.citation.volume | 205 | - |
dc.contributor.author | Eom, Youngho | - |
dc.contributor.author | Ju, Hyejin | - |
dc.contributor.author | Park, Yeonju | - |
dc.contributor.author | Chae, Dong Wook | - |
dc.contributor.author | Jung, Young Mee | - |
dc.contributor.author | Kim, Byoung Chul | - |
dc.contributor.author | Chae, Han Gi | - |
dc.date.accessioned | 2023-12-21T17:07:50Z | - |
dc.date.available | 2023-12-21T17:07:50Z | - |
dc.date.created | 2020-08-10 | - |
dc.date.issued | 2020-09 | - |
dc.description.abstract | Dissolution behavior of polyacrylontrile (PAN) in N,N-dimethylformamide (DMF) and dimethylsulfoxide (DMSO) is investigated in terms of dipole-dipole interactions at polymer-solvent interface. Fourier-transformed infrared (FTIR) imaging of polymer-solvent interface under static dissolution condition at 25 °C and 60 °C exhibits the gel-like swollen layer in the early stage of dissolution for both solvents. This layer readily disappears in PAN-DMSO and DMSO molecules penetrate deep into the polymer phase, whereas that in PAN-DMF is still observed until 12 h even at 60 °C. The better dissolving ability of DMSO is interpreted by higher intrinsic viscosity and lower Huggins’ constant. The solubility (solution homogeneity) is also evaluated by rheological analysis in a wide concentration range of 8–20 wt%. At above 15 wt%, DMSO produces homogeneous solution at 60 °C even without stirring, showing the lower Newtonian flow region. On the other hand, it is necessary to apply vigorous stirring and heating for PAN-DMF system in order to prepare concentrated solution. DMSO provides greater slope of the Cole-Cole plot by rheological measurement than DMF, indicating better solution homogeneity in PAN-DMSO. The FTIR spectra and 2D correlation analysis show that both DMSO and DMF dissolve PAN in a way of sequential contributions of enthalpic and entropic factors. However, DMSO exhibits predominant contribution by enthalpic factor, suggesting that enthalpy change of mixing is a driving force of PAN dissolution in DMSO, whereas dissolution of PAN-DMF is governed by kinetic control. | - |
dc.identifier.bibliographicCitation | POLYMER, v.205, pp.122697 | - |
dc.identifier.doi | 10.1016/j.polymer.2020.122697 | - |
dc.identifier.issn | 0032-3861 | - |
dc.identifier.scopusid | 2-s2.0-85089147627 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/47556 | - |
dc.identifier.url | https://www.sciencedirect.com/science/article/pii/S0032386120305279 | - |
dc.identifier.wosid | 000571539200004 | - |
dc.language | 영어 | - |
dc.publisher | Elsevier BV | - |
dc.title | Effect of dissolution pathways of polyacrylonitrile on the solution homogeneity: Thermodynamic- or kinetic-controlled dissolution | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Polymer Science | - |
dc.relation.journalResearchArea | Polymer Science | - |
dc.type.docType | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | PolyacrylonitrileDissolutionThermodynamics and kinetics | - |
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