Sharmin, Nusrat; Khan, Ruhul; Salmieri, Stephane; Dussault, Dominic; Bouchard, Jean et Lacroix, Monique 
ORCID: https://orcid.org/0000-0002-2042-4033
(2012).
Mechanical and barrier properties of methylcellulose-based films grafted with trimethylolpropane trimethacrylate by gamma radiation: Effect of filling with cellulose nanocrystals
J-FOR: Journal of Science & Technology for Forest Products and Processes
, vol. 2
, nº 6.
pp. 24-31.
Résumé
Biodegradable films were prepared from a 1% aqueous solution of methylcellulose (MC) and 0.25% glycerol. Trimethylolpropane trimethacrylate (TMPTMA, 0.1% w/w) was added to the MC solution, and the resulting cast films, MC-g-TMPTMA, were gamma-irradiated at 0.1-10 kGy. Mechanical properties such as tensile strength (TS), tensile modulus (TM), elongation at break (Eb), and barrier properties of the films were compared after TMPTMA grafting. The incorporation of 0.025-1% cellulose nanocrystals (CNC), as a reinforcing agent in film-forming solution, led to significant improvement of some film properties. Mechanical measurements showed that 0.025% CNC filling made it possible to improve significantly the TS of films to 67 MPa under 1 kGy and their Eb to 31.8% under 0.5 kGy. In addition, WVP measurements indicated that the lowest WVP of films was determined for 1% CNC filling under 0.5 kGy, with a value of 4.03 g.mm/m2.day.kPa corresponding to a 24% reduction compared to the control. This investigation made it possible to establish an optimal formulation of MC-g-TMPTMAgrafted films reinforced with 0.025% CNC under 0.5-1 kGy, with better mechanical and barrier properties obtained simultaneously.
| Type de document: | Article |
|---|---|
| Mots-clés libres: | PaperChem Variable; Cellulose Derivatives; Copolymerization; Mechanical Properties; Reinforcement; Tensile Strength |
| Centre: | Centre INRS-Institut Armand Frappier |
| Date de dépôt: | 09 mars 2024 16:02 |
| Dernière modification: | 09 mars 2024 16:02 |
| URI: | https://espace.inrs.ca/id/eprint/14086 |
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