DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kim, Baekmin Q. | ko |
dc.contributor.author | Jung, Yunji | ko |
dc.contributor.author | Seo, Myungeun | ko |
dc.contributor.author | Choi, Siyoung Q. | ko |
dc.date.accessioned | 2018-10-19T00:29:58Z | - |
dc.date.available | 2018-10-19T00:29:58Z | - |
dc.date.created | 2018-09-27 | - |
dc.date.created | 2018-09-27 | - |
dc.date.issued | 2018-09 | - |
dc.identifier.citation | LANGMUIR, v.34, no.35, pp.10293 - 10301 | - |
dc.identifier.issn | 0743-7463 | - |
dc.identifier.uri | http://hdl.handle.net/10203/245888 | - |
dc.description.abstract | We report a blending mechanism of polystyrene-b-poly(ethylene oxide) (PS-b-PEO) and PS homopolymer (homoPS) at the air/water interface. Our blending mechanism is completely different from the well-known "wet-dry brush theory" for bulk blends; regardless of the size of homoPS, the domain size increased and the morphology changed without macrophase separation, whereas the homoPS of small molecular weight (MW) leads to a transition after blending into the block copolymer domains, and the large MW homoPS is phase-separated in bulk. The difference in blending mechanism at the interface is attributed to adsorption kinetics at a water/spreading solvent interface. Upon spreading, PS-b-PEO is rapidly adsorbed to the water/spreading solvent interface and forms domain first, and then homoPS accumulates on them as the solvent completely evaporates. On the basis of our proposed mechanism, we demonstrate that rapid PS-b-PEO adsorption is crucial to determine the final morphology of the blends. We additionally found that spreading preformed self-assemblies of the blends slowed down the adsorption, causing them to behave similar to bulk blends, following the "wet-dry brush theory". This new mechanism provides useful information for various block copolymer-homopolymer blending systems with large fluid/fluid interfaces such as emulsions and foams. | - |
dc.language | English | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.subject | AIR-WATER-INTERFACE | - |
dc.subject | LIVING RADICAL POLYMERIZATION | - |
dc.subject | LANGMUIR-BLODGETT MONOLAYERS | - |
dc.subject | OXIDE) DIBLOCK COPOLYMER | - |
dc.subject | THIN-FILM BLENDS | - |
dc.subject | BLOCK-COPOLYMERS | - |
dc.subject | RAFT PROCESS | - |
dc.subject | COPOLYMER/HOMOPOLYMER MIXTURES | - |
dc.subject | SURFACE MICELLES | - |
dc.subject | MOLECULAR-WEIGHT | - |
dc.title | Blending Mechanism of PS-b-PEO and PS Homopolymer at the Air/Water Interface and Their Morphological Control | - |
dc.type | Article | - |
dc.identifier.wosid | 000444060500011 | - |
dc.identifier.scopusid | 2-s2.0-85052317693 | - |
dc.type.rims | ART | - |
dc.citation.volume | 34 | - |
dc.citation.issue | 35 | - |
dc.citation.beginningpage | 10293 | - |
dc.citation.endingpage | 10301 | - |
dc.citation.publicationname | LANGMUIR | - |
dc.identifier.doi | 10.1021/acs.langmuir.8b02192 | - |
dc.contributor.localauthor | Seo, Myungeun | - |
dc.contributor.localauthor | Choi, Siyoung Q. | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordPlus | AIR-WATER-INTERFACE | - |
dc.subject.keywordPlus | LIVING RADICAL POLYMERIZATION | - |
dc.subject.keywordPlus | LANGMUIR-BLODGETT MONOLAYERS | - |
dc.subject.keywordPlus | OXIDE) DIBLOCK COPOLYMER | - |
dc.subject.keywordPlus | THIN-FILM BLENDS | - |
dc.subject.keywordPlus | BLOCK-COPOLYMERS | - |
dc.subject.keywordPlus | RAFT PROCESS | - |
dc.subject.keywordPlus | COPOLYMER/HOMOPOLYMER MIXTURES | - |
dc.subject.keywordPlus | SURFACE MICELLES | - |
dc.subject.keywordPlus | MOLECULAR-WEIGHT | - |
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