Table of Contents
Journal of Polymers
Volume 2014, Article ID 321560, 7 pages
Research Article

Kinetic Studies on Saponification of Poly(ethylene terephthalate) Waste Powder Using Conductivity Measurements

1Department of Chemistry, Institute of Science, Nagpur 440001, India
2Department of Chemistry, Sarvodaya Mahavidyalaya, Sindewahi, Chandrapur 441222, India
3Department of Chemistry, Arts, Commerce, and Science College Tukum, Chandrapur 442402, India

Received 13 May 2014; Revised 24 July 2014; Accepted 24 July 2014; Published 25 August 2014

Academic Editor: Yves Grohens

Copyright © 2014 Dilip B. Patil et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Conductometric measurement technique has been deployed to study the kinetic behavior during the reaction of poly(ethylene terepthalate) (PET) and NaOH. A laboratory made arrangement with facility of continuous stirring was used to carry out experiments at desired temperature. With conductometry, the determination of kinetic as well as thermodynamic parameters becomes more simple and faster as compared to gravimetry. Chemical kinetics of this reaction shows that it is a second order reaction with reaction rate constant  g−1 s−1 at 70°C. The specific reaction rates of the saponification reaction in the temperature range at various temperatures (50–80°C) were determined. From the data, thermodynamic parameters such as activation energy, Arrhenius constant (frequency factor), activation enthalpy, activation entropy, and free energy of activation obtained were 54.2 KJ g−1,  min−1, 90.8 KJ g−1, 126.5 JK−1 g−1, and 49.9 KJ g−1, respectively.