WSEAS Transactions on Systems
Print ISSN: 1109-2777, E-ISSN: 2224-2678
Volume 23, 2024
Simulation of Structural Transition in an Isotropic Melt of Nematic and Smectic Polymers
Authors: V. B. Rogozhin, S. G. Polushin, A. A. Lezova, G. E. Polushina, A. S. Polushin
Abstract: The isotropic phases of four fractions of a mesogenic comb-shaped polymer were studied using the electric birefringence method. The fractions have either nematic – isotropic melt, or smectic-A – isotropic melt phase transition, depending on the degree of polymerization. All samples showed a structural transition in isotropic phase. Mathematical modeling of the electro-optical properties was performed based on the modified Landau-De Gennes theory using three- order parameters. The reason for the transition in the isotropic phase is the mutual rearrangement of the polar side groups of the polymer as a result of dipole-dipole interaction.
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Keywords: comb-shaped polymer, short order, Kerr effect, iso - iso transition, mathematical modeling, dipole - dipole interaction
Pages: 105-112
DOI: 10.37394/23202.2024.23.12
WSEAS Transactions on Systems, ISSN / E-ISSN: 1109-2777 / 2224-2678, Volume 23, 2024, Art. #12