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The Effect of Cross-Linking with Citric Acid on the Properties of Agar/Fish Gelatin Films
- Source :
- Polymers, Vol 12, Iss 2, p 291 (2020)
- Publication Year :
- 2020
- Publisher :
- MDPI AG, 2020.
-
Abstract
- The aim of this work was to assess the effect of fish gelatin−citric acid nucleophilic substitution and agar−citric acid esterification reactions on the properties of agar/fish gelatin films. Since temperature is an important cross-linking parameter, films were treated at 90 °C and 105 °C and film properties were compared to those of non-cured films. It was observed that temperature favored the aforementioned reactions, which induced physical and morphological changes. In this regard, darker films with a rougher surface were obtained for the films with a higher cross-linking degree. While mechanical properties were slightly modified, the barrier properties were enhanced due to the reactions that occurred. Therefore, these agar/fish gelatin films cross-linked through two different reactions can be considered to be promising materials as active films for different purposes, such as active packaging or pharmaceutical applications.
- Subjects :
- fish gelatin
agar
citric acid
cross-linking
Organic chemistry
QD241-441
Subjects
Details
- Language :
- English
- ISSN :
- 20734360
- Volume :
- 12
- Issue :
- 2
- Database :
- Directory of Open Access Journals
- Journal :
- Polymers
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.7874df64066e436fa99e7a2b14d83c5c
- Document Type :
- article
- Full Text :
- https://doi.org/10.3390/polym12020291