2.4 Fourier Transform Infrared (FTIR) Spectroscopy
The characteristic functional groups of the nanocomposite hydrogels were
studied by FTIR. The FTIR spectra of chitosan, PEG, nanocomposite
hydrogel with phomopsidione and negative control nanocomposite hydrogel
were studied. The analysis was carried out on an FTIR spectrometer
(Thermo Scientific Nicolet IS10, USA). The spectra were obtained at room
temperature over the range of 4000 cm-1 to 500
cm-1 wave number range.