Simulation of Structural Transition in an Isotropic Melt of Nematic and Smectic Polymers-Reference-Cited by-同舟云学术

Simulation of Structural Transition in an Isotropic Melt of Nematic and Smectic Polymers

Published:2024-02-15 Issue: Volume:23 Page:105-112
ISSN:2224-2678
Container-title:WSEAS TRANSACTIONS ON SYSTEMS
language:en
Short-container-title:

Author:

Rogozhin V. B.¹,Polushin S. G.¹,Lezova A. A.¹,Polushina G. E.¹,Polushin A. S.¹

Affiliation:

1. Department of Physics, St. Petersburg University, 7-9 Universitetskaya Embankment, 199034, St Petersburg, RUSSIA

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.

Publisher

World Scientific and Engineering Academy and Society (WSEAS)

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