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DC Field | Value | Language |
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dc.citation.endPage | 150 | - |
dc.citation.number | 1-3 | - |
dc.citation.startPage | 135 | - |
dc.citation.title | ADVANCES IN COLLOID AND INTERFACE SCIENCE | - |
dc.citation.volume | 94 | - |
dc.contributor.author | Cai, LLJ | - |
dc.contributor.author | Granick, S | - |
dc.date.accessioned | 2023-12-22T11:41:16Z | - |
dc.date.available | 2023-12-22T11:41:16Z | - |
dc.date.created | 2020-07-31 | - |
dc.date.issued | 2001-11 | - |
dc.description.abstract | We find an unexpected analogy between polymer melts compressed between strongly-attractive solid surfaces, and end-attached polymers in near-theta-solvent. End-grafted polystyrene (PS) chains with various graft density were produced by immersing mica, coated with adsorbed diblock copolymers of PS/PVP, PS/polyvinylpyiridine, into trans-decalin at 24 degreesC (this solvent is a near-theta-solvent for PS but a non-solvent for PVP), and the force-distance relations were measured using a surface forces apparatus. The end-grafted PS chains repelled one another in spite of the theta-solvent situation. Repulsive forces began at a thickness, per adsorbed layer, equivalent to 4-5 times the unperturbed radius of gyration of the PS chain. These cases of symmetrically-opposed PS layers are compared to the asymmetric case (PS on one mica surface, the other mica surface bare) and to the case of adsorbed PS homopolymer. Force-distance profiles in the presence of unattached PS homopolymer in solution at concentration c* (the overlap concentration) displayed repulsion beginning at considerably larger separation than in the presence of pure solvent. Finally, we compare to confined melts of linear polydimethylsiloxane (PDMS), cyclic PDMS and a linear perfluoropolyether (Demnum). For these cases of polymer melts confined between adsorbing surfaces, force-distance relations, could be described by the same functional relations as for end-attached chains in near-theta-solvent. | - |
dc.identifier.bibliographicCitation | ADVANCES IN COLLOID AND INTERFACE SCIENCE, v.94, no.1-3, pp.135 - 150 | - |
dc.identifier.doi | 10.1016/S0001-8686(01)00058-6 | - |
dc.identifier.issn | 0001-8686 | - |
dc.identifier.scopusid | 2-s2.0-0035889735 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/48639 | - |
dc.identifier.url | https://www.sciencedirect.com/science/article/pii/S0001868601000586?via%3Dihub | - |
dc.identifier.wosid | 000172091000009 | - |
dc.language | 영어 | - |
dc.publisher | ELSEVIER SCIENCE BV | - |
dc.title | Chains end-grafted in a theta-solvent and polymer melts: comparison of force-distance profiles | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.type.docType | Article; Proceedings Paper | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | force-distance | - |
dc.subject.keywordAuthor | polystyrene (PS) chains | - |
dc.subject.keywordAuthor | theta-solvent | - |
dc.subject.keywordAuthor | surface | - |
dc.subject.keywordAuthor | polymer melt | - |
dc.subject.keywordAuthor | adsorption | - |
dc.subject.keywordPlus | TETHERED CHAINS | - |
dc.subject.keywordPlus | POOR SOLVENT | - |
dc.subject.keywordPlus | SOFT MATTER | - |
dc.subject.keywordPlus | TIGHT SPOT | - |
dc.subject.keywordPlus | POLYSTYRENE | - |
dc.subject.keywordPlus | NANORHEOLOGY | - |
dc.subject.keywordPlus | ADSORPTION | - |
dc.subject.keywordPlus | COPOLYMERS | - |
dc.subject.keywordPlus | DEPENDENCE | - |
dc.subject.keywordPlus | SURFACE | - |
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