Molecular theory of the tilting transition and computer simulations of the tilted lamellar phase of rod-coil diblock copolymers
Osipov, M. A. and Gorkunov, M. V. and Berezkin, A. V. and Antonov, A. A. and Kudryavtsev, Y. V. (2020) Molecular theory of the tilting transition and computer simulations of the tilted lamellar phase of rod-coil diblock copolymers. Journal of Chemical Physics, 152 (18). 184906. ISSN 0021-9606 (https://doi.org/10.1063/5.0005854)
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Abstract
Symmetric rod-coil diblock copolymers have been simulated using the method of dissipative particle dynamics in the broad range of the Flory-Huggins parameter. It has been found that the tilted lamellar phase appears to be the most stable one at strong segregation. The rod-coil copolymer tilt angle and orientational order parameters have been determined as functions of the segregation strength. The density functional theory of rod-coil diblock copolymers has been generalized to the case of the tilted lamellar phase and used to study the stability of the orthogonal lamellar phase with respect to tilt. The orthogonal phase indeed appears to be unstable in the broad region of the parameter space in the case of relatively strong segregation. It has also been shown that the transition into the tilted lamellar phase is determined by a strong coupling between two independent tilt order parameters.
ORCID iDs
Osipov, M. A. ORCID: https://orcid.org/0000-0002-1836-1854, Gorkunov, M. V., Berezkin, A. V., Antonov, A. A. and Kudryavtsev, Y. V.;-
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Item type: Article ID code: 74029 Dates: DateEvent14 May 2020Published11 May 2020Published Online30 April 2020AcceptedSubjects: Science > Physics Department: Faculty of Science > Mathematics and Statistics Depositing user: Pure Administrator Date deposited: 01 Oct 2020 11:05 Last modified: 20 Oct 2024 00:40 URI: https://strathprints.strath.ac.uk/id/eprint/74029