Abstract
The effect of TiO2 on structural properties of Mustelus mustelus gelatin films, obtained by solution casting method, was investigated. This work determined the effect of a low TiO2 particle ratio addition ranging from 0.01 to 0.03% on structural properties of gelatin films. The results showed that TiO2 incorporation improved the UV barrier efficacy and increased the films opacity. The formation of new interactions between gelatin matrix and TiO2 particles were confirmed by FTIR analysis. A decrease in elongation at break was observed for gelatin-based film when TiO2 content increased, whereas the tensile strength increased. The microstructure analysis revealed heterogeneous structure due to the presence of a small aggregate with increasing the TiO2 ratio. The addition of TiO2 increased the contact angles, which could be related to the hydrophobic nature of the TiO2 incorporated films proved by the low swelling capacity of these films. In addition, incorporation of TiO2 particles into gelatin matrix improved barrier properties and provide good antibacterial activity of gelatin films making it able to be used in food packaging or pharmaceutical packaging as a UV protective.
Graphical Abstract
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Acknowledgements
This work was partly supported by the own funds of the UMR PAM laboratory and by the Regional Council of Bourgogne Franche-Comté and the “Fonds Européen de Développement Régional (FEDER)” who invested in lab equipment. This work was funded by the Ministry of Higher Education and Scientific Research, Tunisia (Grant no. 18PJEC06-03).
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Salem, A., Abdelhedi, O., Sebii, H. et al. Smooth Hound Skin Gelatin-TiO2 Films: Physicochemical and Structural Characterization. Waste Biomass Valor 14, 1219–1231 (2023). https://doi.org/10.1007/s12649-022-01911-w
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DOI: https://doi.org/10.1007/s12649-022-01911-w