Table of Contents
Organic Chemistry International
Volume 2012, Article ID 343768, 5 pages
Research Article

The Study of Ultrasonic Degradation of Superabsorbent Hydrogels

Chemistry Department, Science Faculty, Islamic Azad University, Takestan Branch, Takestan, Iran

Received 11 July 2012; Revised 20 September 2012; Accepted 25 September 2012

Academic Editor: Robert Engel

Copyright © 2012 Rajabali Ebrahimi 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.


Viscometry is a valid and practical approach for monitoring the degradation of polymers in solution. In this work, at constant power and pulse, the effects of different operating parameters such as time of irradiation, temperature, solution concentration, volume, solvent, and immersion depth of horn on the rate of degradation have been investigated in aqueous solution using laboratory scale operation. A method of viscometry was used to study the degradation behavior of aqueous dispersions of microgels. The experimental results show that the viscosity of polymer solution decreased with an increase in the ultrasonic irradiation time and approached a limiting value. The present work has enabled us to understand the role of the different operating parameters in deciding the extent of viscosity reduction in aqueous dispersions of microgels and also the controlling effects of them.