Landau-de Gennes free energy expansion for nematic polymersReport as inadecuate




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Abstract : The Landau-de Gennes free energy expansion coefficients for nematic polymers are evaluated on the basis of a molecular-statistical model. It is proved that the obtained expansion provides a reliable qualitative description of the phase transition to the nematic state for polymers with arbitrary molecular length and rigidity. It is demonstrated that this transition is always of the first-order type and the jump of the order parameter is weakly dependent on the molecular length and rigidity.

Keywords : free energy liquid crystal phase transformations liquid crystal polymers mechanical properties of liquids nematic liquid crystals shear modulus first order phase transition Landau de Gennes free energy expansion nematic polymers molecular statistical model molecular length rigidity





Author: V.V. Rusakov M.I. Shliomis

Source: https://hal.archives-ouvertes.fr/



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