DC Field | Value | Language |
---|---|---|
dc.contributor.author | Park, MJ | - |
dc.contributor.author | Char, K | - |
dc.contributor.author | Lodge, TP | - |
dc.contributor.author | Kim, JK | - |
dc.date.accessioned | 2016-04-01T01:52:20Z | - |
dc.date.available | 2016-04-01T01:52:20Z | - |
dc.date.created | 2009-08-25 | - |
dc.date.issued | 2006-08-10 | - |
dc.identifier.issn | 1520-6106 | - |
dc.identifier.other | 2006-OAK-0000006122 | - |
dc.identifier.uri | https://oasis.postech.ac.kr/handle/2014.oak/23892 | - |
dc.description.abstract | A nearly symmetric polystyrene-block-polyisoprene diblock copolymer dissolved at a concentration of 40% in styrene-selective solvents exhibited a cylinder-to-disorder transition upon heating. The solvents used were diethyl phthalate (DEP) and 75:25 and 50:50 mixtures of DEP with di-n-butyl phthalate (DBP). In DEP, the most styrene-selective of the three solvents, rheological measurements indicated a distinct plateau in the temperature-dependent elastic modulus across the 8 C interval above the order-disorder transition temperature, T-ODT 116 degrees C. Previous small-angle neutron scattering measurements in this regime indicated the equilibrium phase to be a liquidlike solution of approximately spherical micelles. An isothermal frequency sweep in this regime indicated a very long relaxation time. Annealing eventually led to the recovery of liquidlike rheological response, over a time scale of hours. Qualitatively similar phenomena were also observed in 75: 25 DEP/DBP and 50:50 DEP/DBP solutions, except the fact that the temperature window of the transient response is narrow and the time scale for the recovery diminishes significantly. Neither small-angle X-ray scattering nor static birefringence gave any clear signature of the transient structure. The structure that leads to the transient rheological response is attributed to micellar congestion due to the slow relaxation of anisotropic micelles into an equilibrium distribution of micelles. Possible origins of the remarkable solvent selectivity dependence are also discussed. | - |
dc.description.statementofresponsibility | X | - |
dc.language | English | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.relation.isPartOf | JOURNAL OF PHYSICAL CHEMISTRY B | - |
dc.subject | ORDER-DISORDER TRANSITION | - |
dc.subject | DYNAMIC STRUCTURE FACTOR | - |
dc.subject | DIBLOCK COPOLYMERS | - |
dc.subject | PHASE-BEHAVIOR | - |
dc.subject | MICROPHASE SEPARATION | - |
dc.subject | TRIBLOCK COPOLYMER | - |
dc.subject | CONCENTRATED-SOLUTIONS | - |
dc.subject | POLYSTYRENE COPOLYMER | - |
dc.subject | VARYING SELECTIVITY | - |
dc.subject | MICELLE REGIME | - |
dc.title | Transient solidlike behavior near the cylinder/disorder transition in block copolymer solutions | - |
dc.type | Article | - |
dc.contributor.college | 화학공학과 | - |
dc.identifier.doi | 10.1021/JP056336I | - |
dc.author.google | Park, MJ | - |
dc.author.google | Char, K | - |
dc.author.google | Lodge, TP | - |
dc.author.google | Kim, JK | - |
dc.relation.volume | 110 | - |
dc.relation.issue | 31 | - |
dc.relation.startpage | 15295 | - |
dc.relation.lastpage | 15301 | - |
dc.contributor.id | 10076321 | - |
dc.relation.journal | JOURNAL OF PHYSICAL CHEMISTRY B | - |
dc.relation.index | SCI급, SCOPUS 등재논문 | - |
dc.relation.sci | SCI | - |
dc.collections.name | Journal Papers | - |
dc.type.rims | ART | - |
dc.identifier.bibliographicCitation | JOURNAL OF PHYSICAL CHEMISTRY B, v.110, no.31, pp.15295 - 15301 | - |
dc.identifier.wosid | 000239463300037 | - |
dc.date.tcdate | 2019-01-01 | - |
dc.citation.endPage | 15301 | - |
dc.citation.number | 31 | - |
dc.citation.startPage | 15295 | - |
dc.citation.title | JOURNAL OF PHYSICAL CHEMISTRY B | - |
dc.citation.volume | 110 | - |
dc.contributor.affiliatedAuthor | Kim, JK | - |
dc.identifier.scopusid | 2-s2.0-33748268716 | - |
dc.description.journalClass | 1 | - |
dc.description.journalClass | 1 | - |
dc.description.wostc | 9 | - |
dc.description.scptc | 9 | * |
dc.date.scptcdate | 2018-05-121 | * |
dc.type.docType | Article | - |
dc.subject.keywordPlus | ORDER-DISORDER TRANSITION | - |
dc.subject.keywordPlus | DYNAMIC STRUCTURE FACTOR | - |
dc.subject.keywordPlus | DIBLOCK COPOLYMER | - |
dc.subject.keywordPlus | MICROPHASE SEPARATION | - |
dc.subject.keywordPlus | PHASE-BEHAVIOR | - |
dc.subject.keywordPlus | CONCENTRATED-SOLUTIONS | - |
dc.subject.keywordPlus | TRIBLOCK COPOLYMER | - |
dc.subject.keywordPlus | MICELLE REGIME | - |
dc.subject.keywordPlus | SPHERE | - |
dc.subject.keywordPlus | POLYISOPRENE | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
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