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Laccase/TEMPO-mediated bacterial cellulose functionalization: production of paper-silver nanoparticles composite with antimicrobial activity

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10.1007/s10570-019-02678-5
 
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Morena Gatius, Ángela GalaMés informacióMés informació
Roncero Vivero, María BlancaMés informacióMés informacióMés informació
Valenzuela, Susana V.
Valls Vidal, CristinaMés informacióMés informacióMés informació
Vidal Lluciá, TeresaMés informacióMés informacióMés informació
Javier Pastor, F.I.
Diaz Lucea, M. Pilar
Martínez Martínez, Josefina
Document typeArticle
Defense date2019-01-01
Rights accessOpen Access
Attribution-NonCommercial-NoDerivs 3.0 Spain
Except where otherwise noted, content on this work is licensed under a Creative Commons license : Attribution-NonCommercial-NoDerivs 3.0 Spain
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
Description
“This is a post-peer-review, pre-copyedit version of an article published in Cellulose. The final authenticated version is available online at: https://doi.org/10.1007/s10570-019-02678-5
CitationMorena, A. G. [et al.]. Laccase/TEMPO-mediated bacterial cellulose functionalization: production of paper-silver nanoparticles composite with antimicrobial activity. "Cellulose", 1 Gener 2019, vol. 26, núm. 16, p. 8655-8668. 
URIhttp://hdl.handle.net/2117/171807
DOI10.1007/s10570-019-02678-5
ISSN0969-0239
Publisher versionhttps://link.springer.com/article/10.1007/s10570-019-02678-5
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  • Departament d’Enginyeria Gràfica i de Disseny - Articles de revista [149]
  • Doctorat en Polímers i Biopolímers - Articles de revista [94]
  • CELBIOTECH - Grup de Recerca: Enginyeria Paperera - Articles de revista [44]
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