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Naslov:Regenerated cellulose films combined with glycerol and polyvinyl alcohol: Effect of moisture content on the physical properties
Avtorji:ID Cazón, Patricia (Avtor)
ID Velazquez, Gonzalo (Avtor)
ID Vazquez, Manuel (Avtor)
Datoteke: Gradivo nima datotek, ki so prostodostopne za javnost. Gradivo je morda fizično dosegljivo v knjižnici fakultete, zalogo lahko preverite v COBISS-u. Povezava se odpre v novem oknu
Jezik:Angleški jezik
Vrsta gradiva:Delo ni kategorizirano
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:UNG - Univerza v Novi Gorici
Opis:Regenerated cellulose-based films combined with glycerol and polyvinyl alcohol (PVOH) show interesting UV- light barrier properties, with potential application in food packaging to prevent oxidative deterioration. How- ever, these materials are sensitive to moisture, and their properties could be modified as a function of the relative humidity. Hence, the objective of the present work was to evaluate the changes in the main properties of re- generated cellulose-glycerol-PVOH films depending on the relative humidity. Using the GAB adsorption iso- therms, the moisture content was related with the water activity of the films at several relative humidity conditions. According to the obtained results, water molecules manifested a plasticizing effect modifying the mechanical, water vapour permeability and optical properties of the developed films. Tensile strength and Young’s modulus values ranged from 92.65 to 17.57 MPa and from 3639.09 to 227.89 MPa, respectively. Both of them decreased when the moisture content increased. The mechanical resistance to deformation of films enhanced at high moisture content, changing from 5.88 to 15.97% and from 0.59 to 2.97 mm in the tensile and puncture test, respectively. This effect was also observed for the burst strength. Water vapour permeability increased from 5.15⋅10?10 to 5.44⋅10?9 g/ms Pa when the moisture content increased, being more significative at higher values. No significant variations were observed in the UV-VIS transmittance at different moisture contents. The obtained results allow expanding the knowledge of the behavior of films based on regenerated cellulose.
Ključne besede:Adsorption isotherms, Plasticization, Regenerated cellulose, Water vapour permeability, Moisture content
Leto izida:2020
Št. strani:105657
Številčenje:1, 103
PID:20.500.12556/RUNG-5974 Novo okno
COBISS.SI-ID:41885443 Novo okno
DOI:10.1016/J.FOODHYD.2020.105657 Novo okno
NUK URN:URN:SI:UNG:REP:7VADUOPM
Datum objave v RUNG:09.12.2020
Število ogledov:3928
Število prenosov:0
Metapodatki:XML DC-XML DC-RDF
:
CAZÓN, Patricia, VELAZQUEZ, Gonzalo in VAZQUEZ, Manuel, 2020, Regenerated cellulose films combined with glycerol and polyvinyl alcohol: Effect of moisture content on the physical properties. Food Hydrocolloids [na spletu]. 2020. Vol. 1, no. 103. [Dostopano 29 april 2025]. DOI 10.1016/J.FOODHYD.2020.105657. Pridobljeno s: https://repozitorij.ung.si/IzpisGradiva.php?lang=slv&id=5974
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Gradivo je del revije

Naslov:Food Hydrocolloids
Leto izida:2020

Licence

Licenca:CC BY-NC-ND 4.0, Creative Commons Priznanje avtorstva-Nekomercialno-Brez predelav 4.0 Mednarodna
Povezava:http://creativecommons.org/licenses/by-nc-nd/4.0/deed.sl
Opis:Najbolj omejujoča licenca Creative Commons. Uporabniki lahko prenesejo in delijo delo v nekomercialne namene in ga ne smejo uporabiti za nobene druge namene.
Začetek licenciranja:09.12.2020

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