الفهرس 
ENGLISH ABSTRACTOnly 14 pages are availabe for public view
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Abstract
The current study was carried out in Faculty of Dentistry, Alexandria University and in City of Scientific Research and Technological Applications (SRTA), New Borg AL-Arab City, Alexandria aiming to characterize and evaluate mechanical properties, biodegradation behavior and swelling of CTS/ PVA/ GO nanocomposite scaffolds. Graphene oxide nanoparticles were prepared using modified hummer method and characterized by Raman spectroscopy, XRD, FTIR, SEM and EDX then a total number of 136 samples were prepared. 17 samples for each group of the nanocomposite scaffolds were prepared by solvent casting technique with different ratios of both CTS and GO and characterized by XRD, FTIR, SEM and TGA.
The researcher observed that the characterization tests confirmed the preparation of GO nanoparticles and their incorporation in the polymer blend (CTS/ PVA). It was observed also that there was no significant difference in tensile strength or elastic modulus between 1CTS (2%):1 PVA and 1CTS (3%):1PVA. The addition of GO decreased the tensile strength for different concentrations. The addition of GO at a concentration of 1% to 1CTS (2%):1 PVA showed a significantly higher elastic modulus when compared to other groups. Regarding biodegradation evaluation, the addition of GO decreased the total weight loss especially for GO (1%) dispersion. Swelling assessment showed that as the concentration of GO increased, the degree of swelling decreased.