| Naslov: | Novel composite films from regenerated cellulose-glycerol-polyvinyl alcohol: Mechanical and barrier properties |
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| Avtorji: | ID Cazón, Patricia (Avtor)
ID Velazquez, Gonzalo (Avtor)
ID Vazquez, Manuel (Avtor) |
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| Datoteke: |
Gradivo nima datotek, ki so prostodostopne za javnost. Gradivo je morda fizično dosegljivo v knjižnici fakultete, zalogo lahko preverite v COBISS-u.  |
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| Jezik: | Angleški jezik |
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| Vrsta gradiva: | Delo ni kategorizirano |
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| Tipologija: | 1.01 - Izvirni znanstveni članek |
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| Organizacija: | UNG - Univerza v Novi Gorici
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| Opis: | 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. |
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| Ključne besede: | Regenerated cellulose, Tensile strength, Water vapor permeability, Anti-plasticizer, DSC, UV protection |
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| Leto izida: | 2019 |
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| Št. strani: | 481-491 |
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| Številčenje: | 1, 89 |
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| PID: | 20.500.12556/RUNG-6027 |
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| COBISS.SI-ID: | 42613507 |
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| DOI: | 10.1016/J.FOODHYD.2018.11.012 |
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| NUK URN: | URN:SI:UNG:REP:LZQXZRE5 |
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| Datum objave v RUNG: | 14.12.2020 |
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| Število ogledov: | 3076 |
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| Število prenosov: | 0 |
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| Metapodatki: |    |
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