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Title:Novel composite films from regenerated cellulose-glycerol-polyvinyl alcohol: Mechanical and barrier properties
Authors:ID Cazón, Patricia (Author)
ID Velazquez, Gonzalo (Author)
ID Vazquez, Manuel (Author)
Files: This document has no files that are freely available to the public. This document may have a physical copy in the library of the organization, check the status via COBISS. Link is opened in a new window
Language:English
Work type:Not categorized
Typology:1.01 - Original Scientific Article
Organization:UNG - University of Nova Gorica
Abstract:Cellulose is considered as an alternative for the demand of biocompatible and environmentally friendly food packaging. The aim of this study was to evaluate a composite film from regenerated cellulose combined with polyvinyl alcohol. Glycerol was used as a plasticizer. Mathematical models were used to describe the effect of the film structure on the mechanical (tensile strength, percentage of elongation at break) and barrier properties (water vapour permeability, light-barrier properties and transparency). The morphology, structural and thermal properties were evaluated by spectral analysis (FT-IR and UV-VIS-NIR), scanning electron microscopy and dif- ferential scanning calorimetry. Models predict cellulose-glycerol-polyvinyl alcohol films with tensile strength values from 25.9 to 369 MPa, similar to that of synthetic polymer films. The elongation at break of the developed films (0.89–18.7%) was lower than that of synthetic polymer films. The water vapour permeability obtained (2.32·10−11 - 3.01·10−11 g/s·m·Pa) was higher than that of petrochemical-based plastics. Cellulose films re- inforced with polyvinyl alcohol showed a smooth surface. Results showed that it is viable to accomplish com- posite films from cellulose-polyvinyl alcohol-glycerol with enhanced mechanical properties. The obtained films showed top values of transparency. The addition of glycerol resulted in films with a UV protective effect which could be important in food packaging to prevent lipid oxidative deterioration.
Keywords:Regenerated cellulose, Tensile strength, Water vapor permeability, Anti-plasticizer, DSC, UV protection
Year of publishing:2019
Number of pages:481-491
Numbering:1, 89
PID:20.500.12556/RUNG-6027 New window
COBISS.SI-ID:42613507 New window
DOI:10.1016/J.FOODHYD.2018.11.012 New window
NUK URN:URN:SI:UNG:REP:LZQXZRE5
Publication date in RUNG:14.12.2020
Views:3801
Downloads:0
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CAZÓN, Patricia, VELAZQUEZ, Gonzalo and VAZQUEZ, Manuel, 2019, Novel composite films from regenerated cellulose-glycerol-polyvinyl alcohol: Mechanical and barrier properties. Food Hydrocolloids [online]. 2019. Vol. 1, no. 89, p. 481–491. [Accessed 21 April 2025]. DOI 10.1016/J.FOODHYD.2018.11.012. Retrieved from: https://repozitorij.ung.si/IzpisGradiva.php?lang=eng&id=6027
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Record is a part of a journal

Title:Food Hydrocolloids
Year of publishing:2019

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License:CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Link:http://creativecommons.org/licenses/by-nc-nd/4.0/
Description:The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
Licensing start date:14.12.2020

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