Steinhoff, B. ; Rullmann, M. ; Wenzel, M. ; Junker, M. ; Alig, I. ; Oser, R. ; Stühn, B. ; Meier, G. ; Diat, O. ; Bosecke, P. ; Stanley, H. B. (1998)
Pressure dependence of the order-to-disorder transition in polystyrene/polyisoprene and polystyrene/poly(methylphenylsiloxane) diblock copolymers.
In: Macromolecules, 31 (1)
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
The pressure dependence of the order-to-disorder transition in a polystyrene/polyisoprene (PS/PI) (M = 17000) and a polystyrene/poly(methylphenylsiloxane) (PS/PMPS) (M = 29600) diblock copolymer of symmetric composition has been studied using small-angle X-ray scattering. The order-disorder transition is investigated with a temperature resolution of 0.1 K. The transition can be resolved in a two-step process with a roughening of the interface preceding the breakdown of the lamellar order. For both systems a pressure-induced ordering transition is observed at constant temperature. The application of small pressures leads to a decrease of the transition temperature for both systems. High pressure shows the opposite effect. The minimum transition temperature for the PS/PI is located around p = 8 bar.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 1998 |
| Autor(en): | Steinhoff, B. ; Rullmann, M. ; Wenzel, M. ; Junker, M. ; Alig, I. ; Oser, R. ; Stühn, B. ; Meier, G. ; Diat, O. ; Bosecke, P. ; Stanley, H. B. |
| Art des Eintrags: | Bibliographie |
| Titel: | Pressure dependence of the order-to-disorder transition in polystyrene/polyisoprene and polystyrene/poly(methylphenylsiloxane) diblock copolymers |
| Sprache: | Englisch |
| Publikationsjahr: | Januar 1998 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Macromolecules |
| Jahrgang/Volume einer Zeitschrift: | 31 |
| (Heft-)Nummer: | 1 |
| Kurzbeschreibung (Abstract): | The pressure dependence of the order-to-disorder transition in a polystyrene/polyisoprene (PS/PI) (M = 17000) and a polystyrene/poly(methylphenylsiloxane) (PS/PMPS) (M = 29600) diblock copolymer of symmetric composition has been studied using small-angle X-ray scattering. The order-disorder transition is investigated with a temperature resolution of 0.1 K. The transition can be resolved in a two-step process with a roughening of the interface preceding the breakdown of the lamellar order. For both systems a pressure-induced ordering transition is observed at constant temperature. The application of small pressures leads to a decrease of the transition temperature for both systems. High pressure shows the opposite effect. The minimum transition temperature for the PS/PI is located around p = 8 bar. |
| Fachbereich(e)/-gebiet(e): | 05 Fachbereich Physik 05 Fachbereich Physik > Institut für Festkörperphysik (2021 umbenannt in Institut für Physik Kondensierter Materie (IPKM)) |
| Hinterlegungsdatum: | 27 Feb 2010 12:36 |
| Letzte Änderung: | 26 Aug 2018 21:25 |
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