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Naslov:Composite films with UV-barrier properties of bacterial cellulose with glycerol and polyvinyl alcohol: puncture properties, solubility and swelling degree
Avtorji:ID Cazón, Patricia (Avtor)
ID Vazquez, Manuel (Avtor)
ID Velazquez, Gonzalo (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:The aim of this study was to develop composite films based on bacterial cellulose, glycerol, and poly(vinyl alcohol) with improved optical and mechanical properties and good UV-barrier property. The interaction among the compounds was analyzed using Fourier transform infrared spectroscopy, scanning electron microscopy, ther- mogravimetry, and differential scanning calorimetry. The mechanical properties (toughness, burst strength, and distance to burst), solubility, water adsorption, and light barrier properties of the composite films were evaluated. Polynomial models obtained allowed us to predict the behavior of these properties. Poly(vinyl alcohol) showed a reinforcing effect on the bacterial cellulose matrix, while glycerol showed a noticeable plasticizing behavior. The bacterial cellulose-based composites showed toughness values ranging from 0.22 to 2.60 MJ/m3. The burst strength values obtained ranged between 43.74 and 2105.52 g. The distance to burst ranged from 0.39 to 4.94 mm. The film solubility on water ranged from 9.37 to 31.65%, and the water retention ranged from 78.26 to 364.78%. Glycerol decreased the transmittance in the UV region, improving the UV- barrier properties of the films, while poly(vinyl alcohol) improved the transparency and opacity values of the samples. The transmittance in the UV regions (A, B, and C) ranged from 1 to 48.51%, increasing with the poly(vinyl alcohol) concentration.
Ključne besede:DSC, FT-IR, SEM, UV protection
Leto izida:2019
Št. strani:3115-3125
Številčenje:8, 20
PID:20.500.12556/RUNG-6025 Novo okno
COBISS.SI-ID:42578179 Novo okno
DOI:10.1021/acs.biomac.9b00704 Novo okno
NUK URN:URN:SI:UNG:REP:UWCPU8AN
Datum objave v RUNG:14.12.2020
Število ogledov:3473
Število prenosov:0
Metapodatki:XML DC-XML DC-RDF
:
CAZÓN, Patricia, VAZQUEZ, Manuel in VELAZQUEZ, Gonzalo, 2019, Composite films with UV-barrier properties of bacterial cellulose with glycerol and polyvinyl alcohol: puncture properties, solubility and swelling degree. Biomacromolecules [na spletu]. 2019. Vol. 8, no. 20, p. 3115–3125. [Dostopano 28 april 2025]. DOI 10.1021/acs.biomac.9b00704. Pridobljeno s: https://repozitorij.ung.si/IzpisGradiva.php?lang=slv&id=6025
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Gradivo je del revije

Naslov:Biomacromolecules
Leto izida:2019

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:14.12.2020

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