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Title: Investigating structural changes of Chitosan-TiO2 and Chitosan-TiO2-ZnO-MgO hybrid films during storage by FTIR spectroscopy
Authors: Anaya Esparza, Luis Miguel
Ruvalcaba Gómez, José M.
Romero Toledo, Rafael
Sánchez Burgos, Jorge Alberto
Montalvo González, Efigenia
Pérez Larios, Alejandro
Keywords: functionalization
chitosan film
titanium dioxide
structural changes
Issue Date: Nov-2021
Publisher: Society of Chemists and Technologists of Macedonia, Skopje, Macedonia
Citation: Anaya-Esparza, L., Ruvalcaba-Gómez, J., Romero-Toledo, R., Sánchez-Burgos, J., Montalvo-González, E., & Pérez-Larios, A. (2021). Investigating structural changes of Chitosan-TiO2 and Chitosan-TiO2-ZnO-MgO hybrid films during storage by FTIR spectroscopy. Macedonian Journal of Chemistry and Chemical Engineering, 40(2), 197-211. doi:
Series/Report no.: Macedonian Journal of Chemistry and Chemical Engineering;Vol 40, No 2 (2021)
Abstract: This work aimed to evaluate the effect of time and two storage temperatures (25 °C and 4 °C) on the structural changes in chitosan (CS) films functionalized with titanium dioxide (TiO2) and a ternary mixed oxide-based TiO2 (TiO2-ZnO-MgO; TZM) by Fourier transform infrared (FTIR) spectroscopy and the in vitro release of TiO2 and TZM from the CS film to the medium. Changes in the FTIR spectra (mainly in the 1700 to 1250 cm–1 region) of the CS-based films during storage were dependent on the storage temperature. The film stored at 25 °C showed remarkable changes after 7 days of evaluation, indicating a dehydration process; however, films stored at 4 °C exhibited reduced changes after 21 days of storage. Moreover, the migration behavior of TiO2 (< 13%) and TZM (< 7%) from CS to the medium showed a first-order kinetic model (R2 > 0.93) in a temperature-dependent response. Further studies are needed to correlate the structural changes of CSTiO2 and CSTZM films during storage with their technological and functional properties, which could limit their potential applications.
Description: Artículo
ISSN: 1857-5625 Online
1857-5552 Print
Appears in Collections:2414 Artículos

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