Please use this identifier to cite or link to this item:
http://hdl.handle.net/2445/146318
Title: | Laccase/TEMPO-mediated bacterial cellulose functionalization: production of paper-silver nanoparticles composite with antimicrobial activity |
Author: | Morena, A. Gala Roncero, M. Blanca Valenzuela Mayorga, Susana Valeria Valls Vidal, Cristina Vidal, Teresa Pastor Blasco, Francisco I. Javier Díaz Lucea, Pilar Martínez Martínez, Josefina |
Keywords: | Bacteris Química de la cel·lulosa Bacteria Cellulose chemistry |
Issue Date: | 19-Aug-2019 |
Publisher: | Springer Verlag |
Abstract: | Bacterial cellulose (BC) was functionalized applying the Laccase/TEMPO oxidative treatment, leading to a five-fold increase of the concentration of carboxyl groups. Paper produced with this cellulose showed improved mechanical properties while maintaining barrier function against water and greases as compared to paper produced with non-oxidized BC. Also, the negative charge provided by the carboxyl groups on functionalized BC was used to generate silver nanoparticles (AgNPs), obtaining a BC paper and Ag composite. The presence of AgNPs in the composites was validated by SEM, EDS and ICP analysis, showing spherical, uniformly sized particles stabilized in the BC nanofibers matrix. Additionally, antimicrobial property of composites containing AgNPs was tested. The results showed the strong antimicrobial activity of the composites against Gram-positive and Gram-negative bacteria and fungi. The generation of Ag nanoparticles in a matrix that combine the physical characteristics of the BC nanofibers with the stiffness and the mechanical properties of paper produced composites that may have applicability in technological and biomedical uses. |
Note: | Versió postprint del document publicat a: https://doi.org/10.1007/s10570-019-02678-5 |
It is part of: | Cellulose, 2019, vol. 26, num. 16, p. 8655-8668 |
URI: | http://hdl.handle.net/2445/146318 |
Related resource: | https://doi.org/10.1007/s10570-019-02678-5 |
ISSN: | 0969-0239 |
Appears in Collections: | Articles publicats en revistes (Genètica, Microbiologia i Estadística) |
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