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Title of Journal: J Therm Anal Calorim

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Abbravation: Journal of Thermal Analysis and Calorimetry

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Springer Netherlands

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DOI

10.1016/0304-4076(81)90070-1

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1588-2926

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Mesomorphism in binary mixtures of 4hexylimino

Authors: Poornima Bhagavath S Mahabaleshwara
Publish Date: 2017/02/03
Volume: 129, Issue: 1, Pages: 339-345
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Abstract

A new nonmesogenic Schiffbased carboxylic acid viz 4hexyliminomethylbenzoic acid HIMB is synthesized and is used to prepare the binary mixtures with mesogenic 4nalkyloxybenzoic acids nOBAs where n = 3 4 5 7 8 9 and 12 in 11 molar ratio The mesomorphism in HIMB and nOBA mixtures is studied by polarizing optical microscopy and differential scanning calorimetry The mesomorphic thermal stabilities of these mixtures are found to vary with those of the nOBAs The results are discussed with the reported mixtures of nOBAs with other Schiffbased pyridyl moieties which are found to exhibit new phase variants and mesomorphic thermal stabilities The phase transition temperatures and the enthalpy changes at the phase transitions are discussed in comparison with the other similar binary mixtures The effects of intermolecular interactions on mesomorphism are discussed

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