Gamma Radiation Synthesis and Characterization of Polyvinyl Alcohol/ Silver Nano Composites Film
Authors:
By Dr. Mohammed Ahmed Ali Omar,Dr. Mohamad Elfadil Mohamed Gar Elnabi,Saion . E ,
Year:
2011
Keywords
Irradiation of Polymer Nanocomposites,Charcterization of
Nancomposites film,Gamma radiation synthesization
Abstract
For the wider interested applications of polymer hybridized metal
nanoparticles composites, poly vinyl-alcohol /silver nanoparticles composites in a
form of a film was prepared by in situ irradiation doping technique up to 50 kGy. The
effect of radiation upon the composites resulted in reducing the silver ions into black
metallic silver, so the general film color changed from white to golden-yellow then
black color at 50 kGy. The UV-visible spectroscopy revealed an absorbance band
peaking at 425 nm which was increased exponentially with dose increment. The study
of UV-spectrogram revealed that the maximum absorbance Amax increased following
the particles radius. Scanning electron Microscopy (SEM) revealed shiny
nanoparticles of silver cored in Polyvinyl-alcohol PVA with homogeneous
distribution and having an average size of 30 nm as well as the XRD spectrum that
shows cubic center face of silver nanoparticles in the film and a crystalline peak for
PVA reduced by radiation to amorphous phase.
الملخص
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