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Fabrication of PGS/CaTiO3 Nano-Composite for Biomedical Application
(Iranian Nanotechnology Society, 2016-06-01)
Biodegradable elastomeric materials are gaining extensive attention in the field of soft tissue engineering. Poly (glycerol sebacate) (PGS) is a novel biocompatible elastomer in this scope. However this polymer has poor mechanical properties especially when the molar ratio of glycerol is higher than sebacic acid. Calcium Titanate (CaTiO<sub>3</sub>) is a biocompatible ceramic with some degrees of piezoelectricity, which is in favor of cell growth. In this study; Calcium Titanate is synthesized at nano-scale by sol-gel method and dispersed into as-synthesized PGS pre-polymer in weight-ratio of 5:95 for CaTiO<sub>3</sub> and PGS, respectively. This waxy material was cured to achieve the final product. The molar ratio of glycerol and sebacic acid for the synthesis of PGS was 1:0.8, respectively. X-ray diffraction (XRD) test confirms successful synthesis of CaTiO<sub>3</sub> and the nano-scale of crystals are approved by transmission electron microscopy (TEM) Image. Fourier transform infrared (FTIR) spectroscopy has revealed a chemical bond between the two phases after addition of ceramic into pre-polymer. Distribution of CaTiO<sub>3</sub> nano-structures in the polymeric matrix is shown by Scanning Electron Microscopy (SEM)....
