Reduced graphene oxide (RGO) was fabricated using gelatin as a reductant, and it could be stably dispersedin gelatin solution without aggregation. A series of RGO/gelatin composite films with various RGO contents were preparedby a solution-casting method. The structure and thermal properties of the RGO/gelatin composite films were characterizedby UV-vis spectroscopy, Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), atomic forcemicroscopy (AFM), scanning electron microscopy (SEM), differential scanning calorimeter (DSC) and thermal gravimetricanalysis (TGA). The addition of RGO enhances the degree of crosslinking of gelatin films and decreases the swellingability of the gelatin films in water, indicating that RGO/gelatin composite films have a better wet stability than gelatinfilms. The glass transition temperature (Tg) of gelatin films is also increased with the incorporation of RGO. The presenceof RGO slightly increases the degradation temperature of gelatin films due to the very low content of RGO in the compositefilms. Since gelatin is a natural and nontoxic biomacromolecule, the RGO/gelatin composite films are expectedto have potential applications in the biomedical field.
Reduced graphene oxide (RGO) was fabricated using gelatin as a reductant, and it could be stably dispersedin gelatin solution without aggregation. A series of RGO/gelatin composite films with various RGO contents were preparedby a solution-casting method. The structure and thermal properties of the RGO/gelatin composite films were characterizedby UV-vis spectroscopy, Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), atomic forcemicroscopy (AFM), scanning electron microscopy (SEM), differential scanning calorimeter (DSC) and thermal gravimetricanalysis (TGA). The addition of RGO enhances the degree of crosslinking of gelatin films and decreases the swellingability of the gelatin films in water, indicating that RGO/gelatin composite films have a better wet stability than gelatinfilms. The glass transition temperature (Tg) of gelatin films is also increased with the incorporation of RGO. The presenceof RGO slightly increases the degradation temperature of gelatin films due to the very low content of RGO in the compositefilms. Since gelatin is a natural and nontoxic biomacromolecule, the RGO/gelatin composite films are expectedto have potential applications in the biomedical field.
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