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

Cellulose (London), 2019-11, Vol.26 (16), p.8655-8668 [Peer Reviewed Journal]

Springer Nature B.V. 2019 ;Cellulose is a copyright of Springer, (2019). All Rights Reserved. ;Attribution-NonCommercial-NoDerivs 3.0 Spain info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-nd/3.0/es/ ;ISSN: 0969-0239 ;EISSN: 1572-882X ;DOI: 10.1007/s10570-019-02678-5

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Title:
Laccase/TEMPO-mediated bacterial cellulose functionalization: production of paper-silver nanoparticles composite with antimicrobial activity
Author: Morena, A. Gala ; Roncero, M. Blanca ; Valenzuela, Susana V. ; Valls, Cristina ; Vidal, Teresa ; Pastor, F. I. Javier ; Diaz, Pilar ; Martínez, Josefina
Subjects: Antiinfectives and antibacterials ; Antimicrobial activity ; Antimicrobial agents ; Bacteria ; Bacterial cellulose oxidation ; Bacterial cellulose paper ; Bioorganic Chemistry ; Biotechnology ; Biotecnologia ; Cellulose ; Ceramics ; Chemistry ; Chemistry and Materials Science ; Composite materials ; Composites ; Enginyeria paperera ; Fibres de cel·lulosa ; Fibres vegetals ; Glass ; Greases ; Laccase ; Mechanical properties ; Nanocomposite ; Nanofibers ; Nanoparticles ; Natural Materials ; Organic Chemistry ; Original Research ; Pasta de paper ; Physical Chemistry ; Physical properties ; Plant fibers ; Polymer Sciences ; Silver ; Silver nanoparticle ; Stiffness ; Sustainable Development ; Wood-pulp ; Àrees temàtiques de la UPC
Is Part Of: Cellulose (London), 2019-11, Vol.26 (16), p.8655-8668
Description: 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. Graphic abstract
Publisher: Dordrecht: Springer Netherlands
Language: English
Identifier: ISSN: 0969-0239
EISSN: 1572-882X
DOI: 10.1007/s10570-019-02678-5
Source: Recercat
AUTh Library subscriptions: ProQuest Central

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

Springer Nature B.V. 2019 ;Cellulose is a copyright of Springer, (2019). All Rights Reserved. ;Attribution-NonCommercial-NoDerivs 3.0 Spain info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-nd/3.0/es/ ;ISSN: 0969-0239 ;EISSN: 1572-882X ;DOI: 10.1007/s10570-019-02678-5

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