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Fabrication of Paper Sheets Coatings Based on Chitosan/Bacterial Nanocellulose/ZnO with Enhanced Antibacterial and Mechanical Properties
Citation key WOS:000676414800001
Author Jablonska, Joanna and Onyszko, Magdalena and Konopacki, Maciej and Augustyniak, Adrian and Rakoczy, Rafal and Mijowska, Ewa
Year 2021
DOI 10.3390/ijms22147383
Address ST ALBAN-ANLAGE 66, CH-4052 BASEL, SWITZERLAND
Journal INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
Volume 22
Number 14
Month JUL
Publisher MDPI
Abstract Here, we designed paper sheets coated with chitosan, bacterial cellulose (nanofibers), and ZnO with boosted antibacterial and mechanical activity. We investigated the compositions, with ZnO exhibiting two different sizes/shapes: (1) rods and (2) irregular sphere-like particles. The proposed processing of bacterial cellulose resulted in the formation of nanofibers. Antimicrobial behavior was tested using E. coli ATCC 25922 (TM) following the ASTM E2149-13a standard. The mechanical properties of the paper sheets were measured by comparing tearing resistance, tensile strength, and bursting strength according to the ISO 5270 standard. The results showed an increased antibacterial response (assigned to the combination of chitosan and ZnO, independent of its shape and size) and boosted mechanical properties. Therefore, the proposed composition is an interesting multifunctional mixture for coatings in food packaging applications.
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