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Personen: Knoll, A. (Autor) 
Magerle, R. (Autor) 
Krausch, Georg (Autor) 
  
Titel: Phase behavior in thin films of cylinder-forming aba block copolymers: Experiments
  
Quelle: Journal of chemical physics. Bd. 120. H. 2. Melville : American Institute Physics. S. 1105 - 1116
Erscheinungsjahr:    2004
ISBN / ISSN: 0021-9606
URL der Originalveröffentlichung doi:10.1063/1.1627324
  
Dokumentart:
Zeitschriftenaufsatz Zeitschriftenaufsatz
Sprache: Englisch
Open Access:
Person der Universität:   
Einrichtung: Universitätsleitung
DDC-Sachgruppe:    Physik
ID: 11492  Universitätsbibliothek Mainz
Hinweis:
Informationen zu den Nutzungsrechten unserer Inhalte Informationen zu den Nutzungsrechten unserer Inhalte
Abstract: We experimentally establish a phase diagram of thin films of concentrated solutions of a cylinder forming polystyrene-block-polybutadiene-block-polystyrene triblock copolymer in chloroform. During annealing the film forms islands and holes with energetically favored values of film thickness. The thin film structure depends on the local thickness of the film and the polymer concentration. Typically, at a thickness close to a favored film thickness parallel orientation of cylinders is observed, while perpendicular orientation is formed at an intermediate film thickness. At high polymer concentration the cylindrical microdomains reconstruct to a perforated lamella structure. Deviations from the bulk structure, such as the perforated lamella and a wetting layer are stabilized in films thinner than approximate to1.5 domain spacings. (C) 2004 American Institute of Physics.
   
  
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