Composite and bi-layer films based on gelatin and chitosan

By S. Rivero, M. García, A. Pinotti. 2009

230 citations recorded by the source corpus.

Abstract The aims of this work were: to develop composite, bi-layer and laminated biodegradable films based on gelatin and chitosan, to determine film barrier and mechanical properties and to characterize their microstructure. Gelatin and chitosan concentrations used were 7.5% and 1% (w/w), respectively. Glycerol (0.75%) was added as plasticizer. Physicochemical properties such as moisture content, transparency and color were analyzed. Composite and bi-layer systems showed a compact structure indicating a good compatibility between components. Water vapor permeability (WVP) was independent of film thickness up to 120 μm for gelatin films and 60 μm for chitosan ones. Both, bi-layer and laminated systems resulted effective alternatives to reduce WVP of composite films (at least 42.5%). Bi-layer systems showed better mechanical properties than laminated ones. The resistance at break increased from 54.3 for composite to 77.2 MPa for bi-layer films, whereas elongation at break values of both composite and bi-layer films were similar (2.2–5.7%).

Subfields: Biomaterials, Biomedical Engineering

View Paper: https://www.semanticscholar.org/paper/0b1b8a5122753ca407385cec8c93ea28bfd37ba1

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Biomaterials

1. J. Martucci
2. R. Bhat
3. N. Marcovich
4. Mariana Pereda
5. Andrea Lazzeri
6. R. Ruseckaite
7. P. Cinelli
8. M. Schmid

Citations in the corpus

• Chitosan/Hydrophilic Plasticizer-Based Films: Preparation, Physicochemical and Antimicrobial Properties (2014, background): “Other peaks situated at wavenumbers of 1,730 cm, correspond to the ester linkage, and that at 896 cm corresponds to the C–O–C of the pyranose ring [4].”
• State of the Art in the Development and Properties of Protein-Based Films and Coatings and Their Applicability to Cellulose Based Products: An Extensive Review (2015, background): “In most other publications, gelatin seems to be used together with other proteins such as soy or whey or even with polysaccharides such as starch [295] or chitosan [296].”
• Effect of Addition of Halloysite Nanoclay and SiO2 Nanoparticles on Barrier and Mechanical Properties of Bovine Gelatin Films (2012, background): “Increase in TS is of vital criteria for food packaging applications as high TS can allow the packaging films to withstand the normal stress encountered during food handling, shipping, and transportation (Rivero et al. 2009).”
• Chitosan-gelatin composites and bi-layer films with potential antimicrobial activity (2011, background): “Comparison with data reported by other authors is difficult since there exist a great dispersion in the literature associated with the different compositions of Chi, degree of acetylation, molecular weight, solubilization, film preparation methods and conditioning prior to testing (Rivero et al., 20”