A Van Der Waals Model for the Nematic Liquuid Crystal Mixtures

Sokolova, E. P.

doi:10.1080/00268949008035627

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“…a temperature vs composition phase diagram for a mixture of two low molar mass liquid crystals ͑4-nitropentyl-4Ј octyloxybenzoate and 4-n-hexyloxyphenyl-4Ј-n-decyloxy-benzoate͒ 15,16 in comparison with the calculated coexistence curves for the nematic and induced smectic coexistence phase boundaries. The closed circles are the experimental data points 15,16 and the solid lines represent the calculated coexistence curves using T SN,1 ϭ61°C and T NI,1 ϭ68°C and T SN,2 ϭ83°C and T NI2 ϭ89°C of the constituents from the experiment. 16 The ␣ 1 and ␣ 2 values were computed to be ␣ 1 ϭ0.943 and ␣ 2 ϭ0.953, respectively.…”

Section: Figmentioning

confidence: 99%

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Phase diagrams of a binary smectic-A mixture

Chiu

Kyu

1997

The Journal of Chemical Physics

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A variety of smectic phase diagrams involving smectic-isotropic and smectic-nematic-isotropic transitions have been calculated based on a combination of Flory-Huggins ͑FH͒ theory for isotropic mixing and Maier-Saupe-McMillan ͑MSM͒ theory for smectic-A ordering of liquid crystals ͑LC͒. To describe the mesophase transitions, two nematic order parameters and two smectic order parameters have been coupled through the normalized orientation distribution and partition functions. Flory-Huggins interaction parameter ͑͒ for isotropic mixing and the coupling term involving the nematic interaction parameter ͑͒ and the McMillan smectic interaction parameter ͑␣͒ for phase transitions of liquid crystals have been incorporated in the calculation. The predictive capability of the present combined FH/MSM model for determining the coexistence regions of a binary smectic-A mixture has been demonstrated by critically testing with a reported smectic phase diagram.

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Section: Figmentioning

confidence: 99%

“…The predictive capability of the present combined FH/MSM model for determining the coexistence regions of the binary smectic-A mixture has been tested rigorously with the reported smectic phase diagram. 15,16…”

Section: Introductionmentioning

confidence: 99%

Phase diagrams of a binary smectic-A mixture

Chiu

Kyu

1997

The Journal of Chemical Physics

View full text Add to dashboard Cite

show abstract

A Van Der Waals Model for the Nematic Liquuid Crystal Mixtures

Cited by 1 publication

References 2 publications

Phase diagrams of a binary smectic-A mixture

Phase diagrams of a binary smectic-A mixture

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