College of Education for Pure Sciences, University of Kirkuk discussed a master dissertation on studying of surface density as a function of the electronic density of polymer surfaces via spectroscopy of an orthopositronium atom by postgraduate student, Mrs. Rana Yassin Mahmoud Amanallah.
The dissertation aimed at extracting the structural free volume and physical properties of PEG8000/TiO2 compounds prepared using PALS techniques and how to change the dynamic properties of free volume and toughness of polyethylene glycol.
The dissertation highlighted that the free size of the crystalline defects using the Lifetime Spectroscopy model and compared with the experimental results of the SS measurements.
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