期刊
CARBOHYDRATE POLYMERS
卷 189, 期 -, 页码 198-203出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2018.02.033
关键词
Sonochemistry; Laccase; Gallic acid; ZnO nanoparticles; Antibacterial textiles; Cotton
资金
- European Community [H2020-720851]
- Joint Programming Initiative on Antimicrobial Resistance (project NPERDMD - Investigating the mechanism of eradication of multiple resistant bacteria by inorganic, organic and protein-based nanoparticles) via the Spanish MINECO [AC14/00022]
An important preventive measure for providing a bacteria-free environment for the patients is the introduction of highly efficient and durable antibacterial textiles in hospitals. This work describes a single step sono-enzymatic process for coating of cotton medical textiles with antibacterial ZnO nanoparticles (NPs) and gallic acid (GA) to produce biocompatible fabrics with durable antibacterial properties. Cellulose substrates, however, need pre-activation to achieve sufficient stability of the NPs on their surface. Herein, this drawback is overcome by the simultaneous sonochemical deposition of ZnO NPs and the synthesis of a bio-based adhesive generated by the enzymatic cross-linking of GA in which the NPs were embedded. GA possesses the multiple functions of an antibacterial agent, a building block of the cross-linked phenolic network, and as a compound providing the safe contact of the coated materials with human skin. The ZnO NPs-GA coated fabrics maintained above 60% antibacterial efficacy even after 60 washing cycles at 75 degrees C hospital laundry regime.
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