Table of Contents
ISRN Polymer Science
Volume 2014, Article ID 632348, 10 pages
Research Article

In Situ Disassembling Behavior of Composite Hydrogels for the Efficient Removal of Crystal Violet Dye from Aqueous Solution

1Department of Chemistry, Adhiyamaan College of Engineering, Hosur, Tamilnadu 635109, India
2Department of Chemistry, Islamiah College, Vaniyambadi, Tamilnadu 635751, India
3Department of Chemistry, EVR College, Trichy, Tamilnadu 620023, India

Received 24 December 2013; Accepted 4 February 2014; Published 12 March 2014

Academic Editors: T. R. Chantara, S. Fakirov, R. Scaffaro, and B. G. Soares

Copyright © 2014 Venkatesan Srinivasan 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.


A novel method for the disassembly of synthetic hydrogels in situ and thereby enhanced adsorption of crystal violet dye is reported. Silicon present in the husk ashes of Panicum miliare is used as the trigger for disassembly of poly(2-acrylamido-1-propane sulfonic acid-co-itaconic acid) hydrogels. Disassembling ability of the ash was determined by changing the temperature of the husk ash. Surface area and particle sizes of both the disassembled and assembled forms of the hydrogels were determined by E. Suito’s method. Removal of crystal violet dye from aqueous solution and the respective adsorption capacities of disassembled and assembled forms of hydrogels were compared by varying parameters such as pH, temperature, and agitation speed. Concentration of the dye in aqueous solution was determined by using UV-Visible spectrophotometer. FTIR analysis was carried out for the characterization of the hydrogels, ash blended hydrogels, and the free ashes. SEM imaging was carried out to differentiate the surfaces of the assembled and disassembled hydrogels.