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Published 2021 | Version v1
Journal article Metadata-only

Investigating structural changes of Chitosan-TiO2 and Chitosan-TiO2-ZnO-MgO hybrid films during storage by FTIR spectroscopy

Creators

  • 1. Laboratorio de Investigacion en Materiales, Agua y Energia, Departamento de Ingenieias, Centro Universitario de los Altos, Universidad de Guadalajara, Tepatitan de Morelos (Mexico)
  • 2. Laboratorio Integral de Investigacion en Alimentos, Tecnologico Nacional de Mexico/Instituto Tecnologico de Tepic (Mexico)
  • 3. Campo Experimental Centro Altos de Jalisco, Instituto Nacional de Investigaciones Forestales, Agricolas y Pecuarias, Tepatitan de Morelos (Mexico)

Description

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. (author)

Additional details

Identifiers

URL
https://mjcce.org.mk/index.php/MJCCE/article/view/2396/910;
DOI
10.20450/mjcce.2021.2396;

Publishing Information

Journal Title
Macedonian Journal of Chemistry and Chemical Engineering
Journal Volume
40
Journal Issue
2
Series
The edition was published in Nov 2021
Journal Page Range
p. 197-211
ISSN
1857-5625
CODEN
MJCCA9

INIS

Country of Publication
North Macedonia, Republic of
Country of Input or Organization
North Macedonia, Republic of
INIS RN
55035701
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Descriptors DEI
FILMS; FOURIER TRANSFORM SPECTROMETERS; HYBRIDIZATION; INFRARED SPECTRA; INSPECTION; MAGNESIUM OXIDES; SPECTROSCOPY; STORAGE; STRUCTURAL CHEMICAL ANALYSIS; TITANIUM OXIDES; ULTRASTRUCTURAL CHANGES; ZINC OXIDES
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; CHALCOGENIDES; MAGNESIUM COMPOUNDS; MEASURING INSTRUMENTS; MORPHOLOGICAL CHANGES; OXIDES; OXYGEN COMPOUNDS; SPECTRA; SPECTROMETERS; TITANIUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS; ZINC COMPOUNDS

Optional Information

Notes
67 refs., 4 tabs., 7 figs.