RT Journal Article
T1 Bacterial cellulose films: Evaluation of the water interaction
A1 Cazón Díaz, Patricia
A1 Velázquez, Gonzalo
A1 Vázquez Vázquez, Manuel
K1 GAB model
K1 Moisture adsorption isotherms
K1 Bacterial cellulose
K1 Mechanical properties
K1 UV-barrier properties
AB 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.
PB Elsevier
SN 2214-2894
YR 2020
FD 2020
LK https://hdl.handle.net/10347/38366
UL https://hdl.handle.net/10347/38366
LA eng
NO Cazón Díaz, P., Velazquez, G. & Vázquez Vázquez, M. (2020). Bacterial cellulose films: evaluation of the water interaction. Food packaging and shelf life, 25, 1-10. https://doi.org/10.1016/j.fpsl.2020.100526
NO This is the author’s version of the work. The definitive version was published in Food packaging and shelf life, vol. 25 (2020),  available online at: https://doi.org/10.1016/j.fpsl.2020.100526
DS Minerva
RD 28 abr 2026