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|a eng
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|a Peleshanko, S
|e verfasserin
|4 aut
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|a Surface behavior of amphiphilic heteroarm star-block copolymers with asymmetric architecture
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|c 2004
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|a Text
|b txt
|2 rdacontent
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|a ohne Hilfsmittel zu benutzen
|b n
|2 rdamedia
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|2 rdacarrier
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|a Date Completed 26.05.2006
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|a Date Revised 15.11.2006
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|a published: Print
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|a Citation Status PubMed-not-MEDLINE
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|a We study the surface behavior of the asymmetric amphiphilic heteroarm poly(ethylene oxide) (PEO)/polystyrene (PS) star polymer on solid substrate. These star polymers differ in both architecture (four- and three-arm molecules, PEO-b-PS(3) and PEO-b-PS(2)) and in the length of PS chains (molecular weight from about 10 000 up to 24 000). We observed that, for a given chemical composition with a predominant content of hydrophobic blocks, the compression behavior of the PS domain structure controls the surface behavior and the final morphology of the monolayers. New features of the surface behavior of star-block copolymers are high stretching of the PS arms from the interface and enhanced stability of the circular PS domain structure, even at high compression. We suggest that for asymmetric star-block copolymers both architecture and chemical composition heavily favor the formation of highly curved interfaces and, thus, more stable circular domain structure with stretched PS arms
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|a Letter
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|a Research Support, Non-U.S. Gov't
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|a Research Support, U.S. Gov't, Non-P.H.S.
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|a Gunawidjaja, R
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Jeong, J
|e verfasserin
|4 aut
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|a Shevchenko, V V
|e verfasserin
|4 aut
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|a Tsukruk, V V
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1991
|g 20(2004), 22 vom: 26. Okt., Seite 9423-7
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|x 0743-7463
|7 nnns
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|g volume:20
|g year:2004
|g number:22
|g day:26
|g month:10
|g pages:9423-7
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