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Functional packaging films originating from hemicelluloses laurate by direct transesterification in ionic liquid.
- Source :
-
Carbohydrate polymers [Carbohydr Polym] 2020 Feb 01; Vol. 229, pp. 115336. Date of Electronic Publication: 2019 Sep 19. - Publication Year :
- 2020
-
Abstract
- An alternative transesterification with vinyl laurate (VL) was applied for chemical modification of hemicelluloses (HC) to prepare functional packaging films. Successful transesterification was confirmed by FT-IR and NMR. Semitransparent laurated HC (LHs) films were prepared by solvent casting method. SEM indicated the ordered honeycomb-patterned surface and the dense cross section of LHs films. The LHs films exhibited excellent hydrophobicity with water contact angle about 120° and the enhanced mechanical properties with tensile strength and elongation at break as 33.94 ± 3.09 MPa and 22.41 ± 2.87%, respectively. The water vapor permeability (WVP) and oxygen permeability (OP) values of LHs films ranged from 1.59 ± 0.07 to 2.23 ± 0.11 (10 <superscript>-10</superscript> ·g/m·s·Pa) and 1.21 ± 0.04 to 4.24 ± 0.30 (cm <superscript>3</superscript> ·μm/m <superscript>2</superscript> ·d·kPa), respectively. Moreover, the films had acceptable antioxidant activity. In terms of these properties, the shelf life of green chilies could be largely extended to 15 days after packing with LHs films.<br /> (Copyright © 2019. Published by Elsevier Ltd.)
Details
- Language :
- English
- ISSN :
- 1879-1344
- Volume :
- 229
- Database :
- MEDLINE
- Journal :
- Carbohydrate polymers
- Publication Type :
- Academic Journal
- Accession number :
- 31826458
- Full Text :
- https://doi.org/10.1016/j.carbpol.2019.115336