Khan, Avik; Huq, Tanzina; Khan, Ruhul A.; Dussault, Dominic; Salmieri, Stephane et Lacroix, Monique 
ORCID: https://orcid.org/0000-0002-2042-4033
(2012).
Effect of gamma radiation on the mechanical and barrier properties of HEMA grafted chitosan-based films
Radiation Physics and Chemistry
, vol. 81
, nº 8.
pp. 941-944.
DOI: 10.1016/j.radphyschem.2011.11.056.
Résumé
Chitosan films were prepd. by dissolving 1% (w/v) chitosan powder in 2% (w/v) aq. acetic acid soln. Chitosan films were prepd. by soln. casting. The values of puncture strength (PS), viscoelasticity coeff. and water vapor permeability (WVP) of the films were found to be 565 N/mm, 35%, and 3.30 g mm/m2 day kPa, resp. Chitosan soln. was exposed to gamma irradn. (0.1-5 kGy) and it was revealed that PS values were reduced significantly (p≤0.05) after 1 kGy dose and it was not possible to form films after 5 kGy. Monomer, 2-hydroxyethyl methacrylate (HEMA) soln. (0.1-1%, w/v) was incorporated into the chitosan soln. and the formulation was exposed to gamma irradn. (0.3 kGy). A 0.1% (w/v) HEMA concn. at 0.3 kGy dose was found optimal-based on PS values for chitosan grafting. Then radiation dose (0.1-5 kGy) was optimized for HEMA grafting. The highest PS values (672 N/mm) were found at 0.7 kGy. The WVP of the grafted films improved significantly (p≤0.05) with the rise of radiation dose.
| Type de document: | Article |
|---|---|
| Mots-clés libres: | Gamma irradiation; chitosan; HEMA; Monomer grafting; Biopolymer |
| Centre: | Centre INRS-Institut Armand Frappier |
| Date de dépôt: | 08 mars 2024 14:38 |
| Dernière modification: | 08 mars 2024 14:38 |
| URI: | https://espace.inrs.ca/id/eprint/14040 |
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