Studies on thermotropic hydrogen bonded binary mixtures

Abstract

The precursors of the present thermotropic hydrogen bonded binary mixtures investigated are prepared from Palmitic acid (PA) and p,n- alkyloxy benzoic acids. PA + 8BAO complex is chosen as one of the chemical ingredients referred as X and PA + 11BAO & PA + 12BAO are referred as Y ingredients to obtain binary mixtures as the individual complexes possesses rich phase polymorphism. As a result, two sets of binary mixtures are formed that is PA + 8BAO: PA + 11BAO and PA + 8BAO: PA + 12BAO which yielded nine binary mixtures of former and later in molar proportion from 0.1 to 0.9. Optical and thermal properties of eighteen binary mixtures are extensively studied.

Keywords:

• Hydrogen bonding
• mesophases
• binary mixtures
• phase transition temperature
• enthalpy values
• specific heat and odd-even effect

Acknowledgements

Authors acknowledge the eternal blessings of almighty Bannari Amman and the infrastructural facilities rendered by the management of Bannari Amman Institute of Technology.

Additional information

Funding

The authors also acknowledge Science and Engineering Research Board SERB (IND), Department of Science and Technology, Government of India for the financial support (EMR/2017/001075) rendered.