Home | My Profile | Contact Us
Research Trends Products  |   order gateway  |   author gateway  |   editor gateway  
Register | Forgot Password

Author Resources
 Author Gateway
 Article submission guidelines

Editor Resources
 Editor/Referee Gateway

 Regional Subscription Agents/Distributors
Trends in Physical Chemistry   Volumes    Volume 16 
Determination of latent heat of phase transitions of 8CB liquid crystal
D. Sharma, K. Farah
Pages: 17 - 24
Number of pages: 8
Trends in Physical Chemistry
Volume 16 

Copyright © 2016 Research Trends. All rights reserved

This study explores a method of finding latent heat of all types of phase transitions of Octylcyanobiphenyl (8CB) liquid crystal where transitions can be ranged from strong first order transition to weak first order and/or second order phase transition. The role of latent heat is very important in Physics, Chemistry and Physical Chemistry area to find how much heat is needed to change the transition of the material. Some of the materials show phase transitions with wings, inclined lines or slopyness that come from the base data and may bring an issue in finding and calculating latent heat for them. In this work, we are focusing on types of phase transition with or without wings to find their latent heat with improved methods and calculations. 8CB is a good example that shows three phase transitions of each type, i.e. crystalline to smectic A transition (K-SmA) which is a strong first order transition, smectic A to nematic (SmA-N) which is a second order phase transition and nematic to isotropic transition (N-I) which is a weak first order transition. These transitions are discussed to use a developed method of finding latent heat of various types of transitions with precision. The latent heat of K-SmA phase transition is found to be the highest, SmA-N is the lowest whereas N-I is in the intermediate range which satisfies the fact that stronger phase transitions need higher latent heat than the weaker phase transitions. This study also shows a correlation between other thermodynamic parameters of these phase transitions in terms of heat flow, heat capacity, specific heat capacity and enthalpy along with their thermodynamic behavior.
Buy this Article


Buy this article
Buy this volume
Subscribe to this title
Shopping Cart

Quick Links
Search Products
Browse in Alphabetical Order : Journals
Browse by Subject Classification : Journals

Ordering Information Ordering Information
Downloadable forms Downloadable Forms