Abstract
Different concentrations of gold nanoparticles (Au NPs) have been doped to polyacrylamide/chitosan (PAM/CS) blend by casting method to demonstrate the effect of nano particles as a doped on the structural, morphological and thermal behavior for PAM/CS blend. Nanocomposite films were characterized before and after addition of the gold. The FT-IR measurement shows some changes in the chemical structure with increase of the gold nanoparticles. The X-ray diffraction indicated that degree of crystallinity for PAM/CS blend was decreased after adding the nano-gold. Transmission electron microscope (TEM) images of the samples contain the gold nanoparticles in PAM/CS matrices showed that the spherical particle has a size range nearly from 5 to 30nm. The parameters of kinetic thermodynamic like activation energies, enthalpy, Gibbs free energy and entropy were calculated from the thermogravimetric (TG) curves. The thermal data irregularly decrease with increasing of gold nanoparticles. TG analysis showed the thermal stability of nanocomposites films after addition of Au NPs was enhanced.