| Naslov: | Bacterial cellulose films: Evaluation of the water interaction |
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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: | Bacterial cellulose is a biopolymer that is gaining attention due to its 3D structure, higher purity, porosity and surface area. However, this material can interact with water molecules from the surrounding environment, resulting in alterations of its properties. Hence, the purpose of this study was to analyze the modifications on the mechanical, water vapor permeability and optical properties of bacterial cellulose films as a function of the water activity. Results indicated that water acted as a plasticizer, mainly affecting mechanical and water vapor permeability properties. The moisture adsorption isotherms allowed predicting the moisture content of the bacterial cellulose films at several relative humidity conditions. Values for tensile strength and burst strength ranged from 15.50 to 22.28 MPa and from 145.03–338.10 g, respectively. The elongation and the distance to burst ranged from 1.36 to 3.71 % and from 0.39 to 1.86 mm, respectively. These values increased due to the plasticizing effect of the water molecules. Water vapor permeability values ranged from 1.35·10−12 to 3.13·10-11 g/ m s Pa, showing a significant increase up to 0.48 of water activity. Bacterial cellulose films showed excellent UV-barrier properties in the different water activities evaluated. |
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| Ključne besede: | GAB model, Moisture adsorption isotherms, Bacterial cellulose, Mechanical properties, UV-barrier properties |
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| Verzija publikacije: | Nerecenzirani rokopis |
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| Leto izida: | 2020 |
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| Št. strani: | 100526 |
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| Številčenje: | 1, 25 |
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| PID: | 20.500.12556/RUNG-5972 |
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| COBISS.SI-ID: | 41878019 |
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| DOI: | https://doi.org/10.1016/j.fpsl.2020.100526 |
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| NUK URN: | URN:SI:UNG:REP:G2MVP5L4 |
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| Datum objave v RUNG: | 09.12.2020 |
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| Število ogledov: | 3405 |
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| Število prenosov: | 0 |
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| Metapodatki: |    |
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| Vaša ocena: | Ocenjevanje je dovoljeno samo prijavljenim uporabnikom. |
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