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Differential scanning calorimetric investigations of binaries formed between thermotropic liquid crystals

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Abstract

Four binary mixtures are isolated from the hydrogen bond liquid crystalline mesogenic complexes comprising methyl malonic acid (MM) and p-n heptyloxy benzoic acid (7BAO) abbreviated as MM + 7BAO & p-n dodecyloxy (12BAO) benzoic acid abbreviated as MM + 12BAO as the precursors exhibit rich phase polymorphism. Variation in the even set of molar proportion in steps of 0.2 leads to the formation of four binary mixtures. Each of the precursors used for the preparation of binary mixtures are treated as X and Y component whose molar ratio varies accordingly. Spectroscopic analysis of the binaries confirms the hydrogen bond existence between the binary mixtures. Phase variance and their textural observations are made through polarizing optical microscopic studies. Thermal properties possessed by these binary mixtures such as phase transition temperatures, enthalpy values, thermal equilibrium, thermal stability, order of phase transition and specific heat capacity are extensively investigated from the differential scanning thermograms obtained for the binaries prepared. These calorimetric investigations suggest the mesophases of the binaries for apt display, thermal and optical applications.

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Acknowledgements

The infrastructural support provided by Centre for Research, Bannari Amman Institute of Technology is gratefully acknowledged.

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Authors and Affiliations

  1. Department of Physics, Sri Shanmugha College of Engineering and Technology, Sankari, 637304, India

    G. Chandrasekar

  2. Department of Biotechnology and Liquid Crystal Research Laboratory (LCRL), Centre for Research, Bannari Amman Institute of Technology, Sathyamangalam, 638401, India

    R. Balaji

  3. Liquid Crystal Research Laboratory (LCRL), Department of Physics, Centre for Research, Bannari Amman Institute of Technology, Sathyamangalam, 638401, India

    N. Pongali Sathya Prabu

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Chandrasekar, G., Balaji, R. & Pongali Sathya Prabu, N. Differential scanning calorimetric investigations of binaries formed between thermotropic liquid crystals. J Therm Anal Calorim (2024). https://doi.org/10.1007/s10973-024-13047-1

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