Orientation-Dependent Order-Disorder Transition of Block Copolymer Lamellae in Electric Fields

Title data

Schoberth, Heiko G. ; Pester, Christian W. ; Ruppel, Markus ; Urban, Volker S. ; Böker, Alexander:
Orientation-Dependent Order-Disorder Transition of Block Copolymer Lamellae in Electric Fields.
In: ACS Macro Letters. Vol. 2 (2013) Issue 6 . - pp. 469-473.
ISSN 2161-1653
DOI: https://doi.org/10.1021/mz400013u

Official URL:

Abstract in another language

Electric fields have been shown to stabilize the disordered phase of near-critical block copolymer solutions. Here, we use in situ synchrotron small-angle X-ray scattering to examine how the initial orientation of lamellar domains with respect to the external field (phi) affects the shift in the order-disorder transition temperature (T_ODT ) of lyotropic solutions of poly(styrene-b-isoprene) in toluene. We find a downward shift of the transition temperature, which scales with lamellar orientation as Delta T_ODT ~ cos^2(phi), in accordance with theory.

Further data

Item Type:	Article in a journal
Refereed:	Yes
Institutions of the University:	Faculties > Faculty of Engineering Science > Chair Material and Process Simulations Faculties Faculties > Faculty of Engineering Science
Result of work at the UBT:	Yes
DDC Subjects:	500 Science > 530 Physics 500 Science > 540 Chemistry
Date Deposited:	04 Mar 2016 08:17
Last Modified:	08 May 2020 09:47
URI:	https://eref.uni-bayreuth.de/id/eprint/31344