. 2012 Jul 1;2012:763127. doi: 10.5402/2012/763127
Copyright © 2012 H. Kumar Singh Yadav and H. G. Shivakumar.
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.
Figure 2.
FTIR spectra of theophylline and hydrogel.