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Title: Incorporation of biocides in nanocapsules for protective coatings used in maritime applications
Author: Maia, F.
Silva, A. P.
Fernandes, S.
Cunha, A.
Almeida, A.
Tedim, J.
Zheludkevich, M. L.
Ferreira, M. G. S.
Keywords: Antifouling coatings
Encapsulation of biocides
Silica nanocapsules
Antibacterial activity
Issue Date: 2015
Publisher: Elsevier
Abstract: This work reports the synthesis and characterization of silica nanocapsules with biologically active com pounds 2 mercaptobenzothiazole and 4,5 dichloro 2 octyl 4 isothiazolin 3 one. The resulting particles were characterized by scanning electron microscopy, thermogravimetry and adsorption desorption isotherms of N2. The antibacterial activity was assessed for both nanocapsules dispersed in solution as well as incorporated in coating systems, using a recombinant bioluminescent Escherichia coli expressing the luxCDABE genes from the marine bioluminescent bacterium Aliivibrio fischeri. The decrease in light emission of the bacterial model, indicative as decrease of metabolic activity, was directly correlated with the level of biocide detected in solution by UV Visible spectrophotometry. The results show that the developed nanomaterials show great potential for application in antifouling coatings.
Peer review: yes
DOI: 10.1016/j.cej.2015.01.076
ISSN: 1385-8947
Appears in Collections:CICECO - Artigos
DBio - Artigos

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