الفهرس 
Title : Laser beam-induced changes in thermally stimulated depolarization current (TSDC) in polymer metal complex composites
AbstractOnly 14 pages are availabe for public view
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Abstract
The influence of both metal complex and laser radiation on a ferroelectric polymer PVDF is studied by means of the thermally stimulated depolarization current (TSDC) technique and fourier transformer infrared (FTIR) analysis. Dicholoro Palladium pyridyl benzimidazole is added to PVDF in a trial to form polymer-metal complex composites. Different concentrations of metal complex are added to PVDF (1% and 3% by weight). TSDC experiment is used to study low frequency relaxations in the investigated samples. Initial rise and peak shape methods are the techniques used in determination of the activation energy followed by detection of both relaxation time and frequency for different transitions. Afterwards, different laser energies are shined on PVDF/metal complex composite of concentration 1%wt and TSDC analysis was applied to investigate the induced changes in its TSDC.
Dielectric relaxation spectroscopy (DRS) can be used as another technique to study the influence of metal complex and laser on the polymer properties. The ac.electrical conductivity and ac. electrical impendence of pure PVDF and different metal complex /PVDF. Moreover, the behavior of the dielectric constant (ε’) and dielectric losses (ε``) with frequency for all samples at room temperature was elucidated.
Finally, the influence of Nd: YAG laser of 1064nm with different laser pulses (energies) on the dielectric properties of metal complex/PVDF (1wt %) composites was detected.