Repozitorij Univerze v Novi Gorici

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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:Cazon, Patricia (Avtor)
Velazquez, Gonzalo (Avtor)
Vazquez, Manuel (Avtor)
Datoteke:.pdf Cellulose_preprint.pdf (552,03 KB)
 
Jezik:Angleški jezik
Vrsta gradiva:Delo ni kategorizirano (r6)
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
Leto izida:2020
Št. strani:8199-8213
Številčenje:21, 1
COBISS_ID:41876483 Povezava se odpre v novem oknu
URN:URN:SI:UNG:REP:V9QRCVPW
DOI:https://doi.org/10.1007/s10570-020-03346-9 Povezava se odpre v novem oknu
Licenca:CC BY-NC-ND 4.0
To delo je dosegljivo pod licenco Creative Commons Priznanje avtorstva-Nekomercialno-Brez predelav 4.0 Mednarodna
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Število prenosov:34
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Skupna ocena:(0 glasov)
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Gradivo je del revije

Naslov:Cellulose
ISSN:0969-0239

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