Research Article Open Access
Optical mesophase textures and the enthalpy changes with temperature of a liquid crystal compound 9OBA
Sangita Patari*, Aparna Nath
Department of Physics, National Institute of Technology Agartala, Barjala, Jirania, Tripura 799046, India
Adv. Mater. Proc., 2017, 2 (2), 125-127
Publication Date (Web):05 February 2017
Copyright © IAAM-VBRI Press
In this article, our intention is to observe the mesophase textures of a liquid crystal (LC) compound 4-nonyloxybenzoic Acid (9OBA) in an attempt to understand the nature of dramatic changes of the mesophase transition textures with temperature. The studies of mesophase textures were carried out by using polarizing optical microscope (POM). Mesophase transition temperatures and their corresponding enthalpy changes (during heating) are experimentally deduced from differential scanning calorimetry (DSC). Higher value of enthalpy changes has been observed for the solid crystalline to Smectic C (SmC) transition. The compound 9OBA is found to exhibit nematic and SmC mesosphase and may be useful for the projection display since it exhibits high clearing temperature. Copyright © 2017 VBRI Press.