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Naslov:UV-protecting films based on bacterial cellulose, glycerol and polyvinyl alcohol: effect of water activity on barrier, mechanical and optical properties
Avtorji:ID Cazón, Patricia (Avtor)
ID Velazquez, Gonzalo (Avtor)
ID Vazquez, Manuel (Avtor)
Datoteke:.pdf Cellulose_preprint.pdf (552,03 KB)
MD5: 66A4803BA0194FB431DBBEBEC3CCFE64
 
Jezik:Angleški jezik
Vrsta gradiva:Delo ni kategorizirano
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:UNG - Univerza v Novi Gorici
Opis:Biodegradable films based on bacterial cellulose, glycerol and polyvinyl alcohol are a new alternative to develop food packaging with the capac- ity to retard or inhibit the effect of UV radiation. However, these compounds are sensitive to moisture. Therefore, the purpose of this study was to evaluate the modifications of the mechanical, water vapor permeability and optical properties of these composite films depending on their water activity. Results showed that water molecules acted as a plasticizer agent, modifying the mechanical, water vapor perme- ability and optical properties of the developed films. However, an overplastification process took place at higher activity water, resulting in a weakness of film structure and decreasing drastically the elongation. The transmittance in the UV–VIS light region decreased when the activity water increased. No significant variations were observed in color, trans- parency or opacity properties.
Ključne besede:GAB model, Moisture adsorption isotherms, Plasticization, Bacterial cellulose, Mechanical properties, UV-barrier properties
Verzija publikacije:Nerecenzirani rokopis
Leto izida:2020
Št. strani:8199-8213
Številčenje:1, 21
PID:20.500.12556/RUNG-5971 Novo okno
COBISS.SI-ID:41876483 Novo okno
DOI:https://doi.org/10.1007/s10570-020-03346-9 Novo okno
NUK URN:URN:SI:UNG:REP:V9QRCVPW
Datum objave v RUNG:09.12.2020
Število ogledov:3654
Število prenosov:98
Metapodatki:XML DC-XML DC-RDF
:
CAZÓN, Patricia, VELAZQUEZ, Gonzalo in VAZQUEZ, Manuel, 2020, UV-protecting films based on bacterial cellulose, glycerol and polyvinyl alcohol: effect of water activity on barrier, mechanical and optical properties. Cellulose [na spletu]. 2020. Vol. 1, no. 21, p. 8199–8213. [Dostopano 15 april 2025]. DOI https://doi.org/10.1007/s10570-020-03346-9. Pridobljeno s: https://repozitorij.ung.si/IzpisGradiva.php?lang=slv&id=5971
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Gradivo je del revije

Naslov:Cellulose
ISSN:0969-0239

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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