3D-printed polymer-infiltrated ceramic network with antibacterial biobased silver nanoparticles
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Document typeArticle
Defense date2022-01-01
PublisherAmerican Chemical Society
Rights accessRestricted access - publisher's policy
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Abstract
This work aimed at the antimicrobial functionalization of 3D-printed polymer-infiltrated biomimetic ceramic networks (PICN). The antimicrobial properties of the polymer-ceramic composites were achieved by coating them with human- and environmentally safe silver nanoparticles trapped in a phenolated lignin matrix (Ag@PL NPs). Lignin was enzymatically phenolated and used as a biobased reducing agent to obtain stable Ag@PL NPs, which were then formulated in a silane (¿-MPS) solution and deposited to the PICN surface. The presence of the NPs and their proper attachment to the surface were analyzed with spectroscopic methods (FTIR and Raman) and X-ray photoelectron spectroscopy (XPS). Homogeneous distribution of 13.4 ± 3.2 nm NPs was observed in the transmission electron microscopy (TEM) images. The functionalized samples were tested against Gram-positive (Staphylococcus aureus) and Gram-negative (Pseudomonas aeruginosa) bacteria, validating their antimicrobial efficiency in 24 h. The bacterial reduction of S. aureus was 90% in comparison with the pristine surface of PICN. To confirm that the Ag-functionalized PICN scaffold is a safe material to be used in the biomedical field, its biocompatibility was demonstrated with human fibroblast (BJ-5ta) and keratinocyte (HaCaT) cells, which was higher than 80% in both cell lines.
CitationHodasova, L. [et al.]. 3D-printed polymer-infiltrated ceramic network with antibacterial biobased silver nanoparticles. "ACS Applied Bio Materials", 1 Gener 2022, vol. 5, núm. 10, p. 4803-4813.
ISSN2576-6422
Publisher versionhttps://pubs.acs.org/doi/10.1021/acsabm.2c00509
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- GBMI - Grup de Biotecnologia Molecular i Industrial - Articles de revista [170]
- IMEM-BRT- Innovation in Materials and Molecular Engineering - Biomaterials for Regenerative Therapies - Articles de revista [356]
- Departament de Ciència i Enginyeria de Materials - Articles de revista [513]
- Doctorat en Polímers i Biopolímers - Articles de revista [106]
- Departament d'Enginyeria Química - Articles de revista [1.988]
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