Khan, Ruhul A.; Salmieri, Stephane; Dussault, Dominic; Tufenkji, Nathalie; Uribe-Calderon, Jorge; Kamal, Musa R.; Safrany, Agnes et Lacroix, Monique 
ORCID: https://orcid.org/0000-0002-2042-4033
(2012).
Preparation and Thermo-Mechanical Characterization of Chitosan Loaded Methylcellulose-Based Biodegradable Films: Effects of Gamma Radiation
Journal of Polymers and the Environment
, vol. 20
, nº 1.
pp. 43-52.
DOI: 10.1007/s10924-011-0336-y.
Résumé
Chitosan (0.1-1%, wt./wt.), dissolved in 2% acetic acid soln., was added into 1% methylcellulose (MC)-based formulation contg. 0.5% vegetable oil, 0.25% glycerol and 0.025% Tween80. Films were prepd. by casting. Puncture strength (PS), puncture deformation (PD), viscoelasticity coeff. and water vapor permeability (WVP) of the films were measured. The PS value of 312 N/mm was obsd. for MC-based films contg. 0.25% chitosan. Values of PD, viscoelasticity coeff. and WVP of these films were 5.0 mm, 44.1%, and 6.0 g mm/m2 day kPa, resp. The MC-based films contg. 0.25% chitosan were also exposed to gamma radiation (0.5-50 kGy). The PS of the treated films decreased significantly from 312 at 0 kGy to 201 N/mm when treated at a dose of 50 kGy. However, WVP values were not affected by increasing irradn. the dose used. The Fourier Transform IR spectroscopy supported the mol. interactions due to addn. of chitosan in MC-based films. Thermo gravimetric anal. and differential scanning calorimetric expts. showed that thermal properties of the films were significantly improved by chitosan loading. Surface topog. of the films was studied by SEM and found rougher due to chitosan addition.
| Type de document: | Article |
|---|---|
| Mots-clés libres: | Packaging materials; Chitosan; Biodegradable films; Methylcellulose; Gamma radiation |
| Centre: | Centre INRS-Institut Armand Frappier |
| Date de dépôt: | 08 mars 2024 14:48 |
| Dernière modification: | 08 mars 2024 14:50 |
| URI: | https://espace.inrs.ca/id/eprint/14046 |
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