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DC Field | Value | Language |
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dc.citation.endPage | 6127 | - |
dc.citation.number | 14 | - |
dc.citation.startPage | 6122 | - |
dc.citation.title | MACROMOLECULES | - |
dc.citation.volume | 38 | - |
dc.contributor.author | Chung, BH | - |
dc.contributor.author | Park, Soojin | - |
dc.contributor.author | Chang, TY | - |
dc.date.accessioned | 2023-12-22T10:36:08Z | - |
dc.date.available | 2023-12-22T10:36:08Z | - |
dc.date.created | 2014-09-26 | - |
dc.date.issued | 2005-07 | - |
dc.description.abstract | A polystyrene-block-poly(methyl methacrylate) (PS-b-PMMA) was fractionated by HPLC, and the morphology of surface micelles formed at the air/water interface was investigated. Individual PS and PMMA blocks were fractionated by normal-phase and reversed-phase HPLC, respectively, into three fractions each to obtain nine fractions of narrower distribution in molecular weight as well as in composition. Although the mother PS-b-PMMA was prepared by anionic polymerization and had a narrow molecular weight distribution as characterized by size exclusion chromatography (Mw = 72.8 kg/mol, M w/Mn = 1.08, PS wt % = 73.7%), the nine fractionated samples showed significant variations in molecular weight (Mw = 63.1-79.5 kg/mol) and in composition (PS wt % = 66.5-76.3%). The fractionated block copolymers formed more uniform surface micelles than the unfractionated mother PS-b-PMMA and exhibited a large variation with respect to the composition. The PS-b-PMMA fraction of the lowest PS content (66.5 wt %) showed circular micelles only. Rod-shaped micelles started to appear with a slight increase in the PS content, but circular and rod-shaped micelles coexist over ca. 10% concentration range and no sharp phase boundary appears to exist. The rod-shaped micelles formed at low PS contents exhibit a structure of linearly connected circular micelles. | - |
dc.identifier.bibliographicCitation | MACROMOLECULES, v.38, no.14, pp.6122 - 6127 | - |
dc.identifier.doi | 10.1021/ma050751r | - |
dc.identifier.issn | 0024-9297 | - |
dc.identifier.scopusid | 2-s2.0-22944481468 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/6535 | - |
dc.identifier.url | http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=22944481468 | - |
dc.identifier.wosid | 000230376400038 | - |
dc.language | 영어 | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.title | HPLC fractionation and surface micellization behavior of polystyrene-b-poly(methyl methacrylate) | - |
dc.type | Article | - |
dc.description.journalRegisteredClass | scopus | - |
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