Determining the Dilution Exponent for Entangled 1,4-Polybutadienes Using Blends of Near-Monodisperse Star with Unentangled, Low Molecular Weight Linear Polymers
DC Field | Value | Language |
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dc.contributor.author | Hall, Ryan | - |
dc.contributor.author | Kang, Beom-Goo | - |
dc.contributor.author | Lee, Sanghoon | - |
dc.contributor.author | Chang, Taihyun | - |
dc.contributor.author | Venerus, David C. | - |
dc.contributor.author | Hadjichristidis, Nikos | - |
dc.contributor.author | Mays, Jimmy | - |
dc.contributor.author | Larson, Ronald G. | - |
dc.date.available | 2020-09-14T08:12:29Z | - |
dc.date.created | 2020-06-25 | - |
dc.date.issued | 2019-02 | - |
dc.identifier.issn | 0024-9297 | - |
dc.identifier.uri | http://scholarworks.bwise.kr/ssu/handle/2018.sw.ssu/39083 | - |
dc.description.abstract | We determine experimentally the "dilution exponent" alpha for entangled polymers from the scaling of terminal crossover frequency with entanglement density from the linear rheology of three 1,4-polybutadiene star polymers that are blended with low-molecular-weight, unentangled linear 1,4-polybutadiene at various star volume fractions, phi(s). Assuming that the rheology of monodisperse stars depends solely on the plateau modulus G(N)(phi(s)) proportional to phi(1+alpha)(s), the number of entanglements per chain M-e(phi(s)) proportional to phi(-alpha)(s), and the tube-segment frictional Rouse time tau(e)(phi(s)) proportional to phi(-2 alpha)(s), we show that only an alpha = 1 scaling superposes the M-e(phi(s)) dependence of the terminal crossover frequency omega(x,t) of the blends with those of pure stars, not alpha = 4/3. This is the first determination of a for star polymers that does not rely on any particular tube model implementation. We also show that a generalized tube model, the "Hierarchical model", using the "Das" parameter set with alpha = 1 reasonably predicts the rheological data of the melts and blends featured in this paper. | - |
dc.language | 영어 | - |
dc.language.iso | en | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.relation.isPartOf | MACROMOLECULES | - |
dc.title | Determining the Dilution Exponent for Entangled 1,4-Polybutadienes Using Blends of Near-Monodisperse Star with Unentangled, Low Molecular Weight Linear Polymers | - |
dc.type | Article | - |
dc.identifier.doi | 10.1021/acs.macromol.8b01828 | - |
dc.type.rims | ART | - |
dc.identifier.bibliographicCitation | MACROMOLECULES, v.52, no.4, pp.1757 - 1771 | - |
dc.description.journalClass | 1 | - |
dc.identifier.wosid | 000460199600038 | - |
dc.identifier.scopusid | 2-s2.0-85061894337 | - |
dc.citation.endPage | 1771 | - |
dc.citation.number | 4 | - |
dc.citation.startPage | 1757 | - |
dc.citation.title | MACROMOLECULES | - |
dc.citation.volume | 52 | - |
dc.contributor.affiliatedAuthor | Kang, Beom-Goo | - |
dc.type.docType | Article | - |
dc.description.isOpenAccess | N | - |
dc.subject.keywordPlus | CHAIN-LENGTH FLUCTUATIONS | - |
dc.subject.keywordPlus | TEMPORARY NETWORK MODEL | - |
dc.subject.keywordPlus | DYNAMIC DILUTION | - |
dc.subject.keywordPlus | VISCOELASTIC PROPERTIES | - |
dc.subject.keywordPlus | CONSTRAINT-RELEASE | - |
dc.subject.keywordPlus | BINARY BLENDS | - |
dc.subject.keywordPlus | TUBE DILATION | - |
dc.subject.keywordPlus | RHEOLOGY | - |
dc.subject.keywordPlus | MELTS | - |
dc.subject.keywordPlus | RELAXATION | - |
dc.relation.journalResearchArea | Polymer Science | - |
dc.relation.journalWebOfScienceCategory | Polymer Science | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
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