THERMAL AND STRUCTURAL PROPERTIES OF IRRADIATED SILVER/POLY (VINYL ALCOHOL) (Ag/PVA) NANOCOMPOSITES USING ARGON ION BEAMAbstract
Structural and thermal properties of silver/poly(vinyl alcohol) (Ag/PVA) nanocomposites has been investigated as a function of Argon ion beam fluence. The XRD patterns (X-ray diffraction) showed the formation of the Ag/PVA in polymer structure and phase analysis with different sizes as a function of either ion beam fluence or Ag+ ion molar concentrations. The kinetic parameters for the thermal stability of Ag/PVA were evaluated applying Thermal Gravimetric Analysis (TGA), the decomposition temperature increase from 302 0C for pure PVA to 345 0C for irradiated Ag nanofillers /PVA with ion beam fluence 3.0 x 1018 ions.cm-2 at 0.8 % AgNO3 concentration . Fourier transform infrared spectroscopy (FT-IR) exhibits the creation of polar groups on the surface which are responsible for surface wettability improvement. From the above, this procedure is simple and useful for large scale synthesis and which make this material as a candidate medical devices and for drug delivery applications.
Mahmmoud S. Abd-Elmonem * and Waheed M. Salem
National Organization for Drug Control and Research (NODCAR), Giza, Egypt.
29 August, 2016
24 October, 2016
09 November, 2016
01 March, 2017