Title: | Characterization of bacterial cellulose films combined with chitosan and polyvinyl alcohol: Evaluation of mechanical and barrier properties |
---|
Authors: | ID Cazón, Patricia (Author) ID Velazquez, Gonzalo (Author) ID Vazquez, Manuel (Author) |
Files: |
This document has no files that are freely available to the public. This document may have a physical copy in the library of the organization, check the status via COBISS. |
---|
Language: | English |
---|
Work type: | Not categorized |
---|
Typology: | 1.01 - Original Scientific Article |
---|
Organization: | UNG - University of Nova Gorica
|
---|
Abstract: | Bacterial cellulose (BC) produced by Komagataeibacter xylinus is a biomaterial with a unique three-dimensional structure. To improve the mechanical properties and reinforce the BC films, they were immersed in polyvinyl alcohol (0–4%) and chitosan (0–1%) baths. Moisture content, mechanical properties and water vapour perme- ability were measured to assess the effect of polyvinyl alcohol and chitosan. The morphology, optical, structural and thermal properties were evaluated by scanning electron microscopy, spectral analysis, thermogravimetry and differential scanning calorimetry. Results showed that moisture content was significantly affected by the chitosan presence. Tensile strength values in the 20.76–41.65 MPa range were similar to those of synthetic polymer films. Percentage of elongation ranged from 2.28 to 21.82% and Young's modulus ranged from 1043.88 to 2247.82 MPa. The water vapour permeability (1.47×10−11–3.40×10−11 g/m s Pa) decreased with the addition of polyvinyl alcohol. The developed films own UV light barrier properties and optimal visual appearance. |
---|
Keywords: | Films, Bacterial cellulose, Water vapor permeability, Chitosan, Polyvinyl alcohol, UV protection |
---|
Year of publishing: | 2019 |
---|
Number of pages: | 72-85 |
---|
Numbering: | 1, 216 |
---|
PID: | 20.500.12556/RUNG-6026 |
---|
COBISS.SI-ID: | 42581507 |
---|
DOI: | 10.1016/J.CARBPOL.2019.03.093 |
---|
NUK URN: | URN:SI:UNG:REP:16KTMHHX |
---|
Publication date in RUNG: | 14.12.2020 |
---|
Views: | 3122 |
---|
Downloads: | 0 |
---|
Metadata: | |
---|
:
|
Copy citation |
---|
| | | Average score: | (0 votes) |
---|
Your score: | Voting is allowed only for logged in users. |
---|
Share: | |
---|
Hover the mouse pointer over a document title to show the abstract or click
on the title to get all document metadata. |