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Molecular Dynamic Simulation of Side‐Chain Liquid Crystalline Elastomer Under Load
Author(s) -
Darinskii Anatoly A.,
Zarembo Anna,
Balabaev Nikolai K.
Publication year - 2007
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200750610
Subject(s) - thermotropic crystal , liquid crystal , materials science , elastomer , isotropy , phase (matter) , phase transition , side chain , anisotropy , molecular dynamics , polymer , elastic modulus , chemical physics , composite material , thermodynamics , liquid crystalline , optics , organic chemistry , computational chemistry , chemistry , physics , optoelectronics
Summary: We present a molecular dynamic simulation of a side chain liquid crystalline elastomer (LCE) under load. The LCE is composed of a flexible tetrafunctional diamond like network with rod‐like mesogens attached to the network. As a precursor of the LC elastomer a flexible polymer network in a low molecular liquid‐crystal (LC) solvent was used. The phase behavior of the LCE under uniaxial stretching up to the deformations of λ = 1.5 and 2.0 at different densities was studied. As in the non‐stretched case upon density increase an isotropic to nematic phase transition occurs. However, in contrast to thermotropic side chain LC elastomers the stress induced shift transition is not observed. The stretching slightly increases the anisotropy of translational diffusion of mesogens in the nematic state. The stress‐strain dependence for LCE both in the isotropic and the nematic states is obtained. Elastic modulus increases at high values of order parameter.