Incorporation of biocides in nanocapsules for protective coatings used in maritime applications

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abstract

This work reports the synthesis and characterization of silica nanocapsules with biologically-active compounds 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 N-2. 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. (C) 2015 Elsevier B.V. All rights reserved.

keywords

ANTIFOULING COATINGS; 2-MERCAPTOBENZOTHIAZOLE; CORROSION; NANOCONTAINERS; POLYMERIZATION; DERIVATIVES; POLYMERS; SURFACES; PAINTS

subject category

Engineering

authors

Maia, F; Silva, AP; Fernandes, S; Cunha, A; Almeida, A; Tedim, J; Zheludkevich, ML; Ferreira, MGS

our authors

foto Frederico Calheiros Maia

Frederico Calheiros Maia

PhD Student
foto João Tedim

João Tedim

Associate Professor
foto Mário Guerreiro Silva Ferreira

Mário Guerreiro Silva Ferreira

Retired Professor
foto Mikhail Zheludkevich

Mikhail Zheludkevich

Invited Principal Researcher

Groups

G3 - Electrochemical Materials, Interfaces and Coatings

Projects

CICECO - Aveiro Institute of Materials (UID/CTM/50011/2013)

NANOMAR - Nanocontainer-based active coatings for maritime applications (NANOMAR)

acknowledgements

FM and JT thank FCT for PhD (SFRH/BD/72663/2010) and for Researcher (IF/00347/2013) grants, respectively. Authors thank Marie Curie IRSES project NANOMAR - Nanocontainer-based active coatings for maritime applications (No. 295145) and the Centre for Environmental and Marine Studies, University of Aveiro (CESAM, project Pest-C/MAR/LA0017/2013). This work was developed in the scope of the project CICECO-Aveiro Institute of Materials (Ref. FCT UID/CTM/50011/2013), financed by national funds through the FCT/MEC and when applicable co-financed by FEDER under the PT2020 Partnership Agreement.

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Publication Details

type
Journal Article
year
2015
journal
CHEMICAL ENGINEERING JOURNAL
volume
270
publisher
ELSEVIER SCIENCE SA
issn
1385-8947
digital object identifier
10.1016/j.cej.2015.01.076
web of science article identifier
WOS:000353729100018

Journal Metrics (JCR 2019)

Journal Impact Factor
10.652
Journal Impact Factor (5 yrs)
9.43
category normalized journal percentile
97.361

Citations

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