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Preparation and characterisation of silicone-based coatings filled with carbon nanotubes and natural sepiolite and their application as marine fouling-release coatings

Lookup NU author(s): Sheelagh Conlan, Robert Mutton, Professor Tony Clare

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Abstract

This article reports on the preparation and partial characterisation of silicone-based coatings called with low levels of either synthetic multiwall carbon nanotubes (MWCNTs) or natural sepiolite (NS). The antifouling and fouling-release properties of these coatings were explored through laboratory assays involving representative soft-fouling (Ulva) and hard-fouling (Balanus) organisms. The bulk mechanical properties of the coatings appeared unchanged by the addition of low amounts of filler,in contrast to the surface properties, which were modified on exposure to water. The release of Ulva sporelings (young plants) was improved by the addition of low amounts of both NS and MWCNTs. The most profound effect recorded was the significant reduction of adhesion strength of adult barnacles growing on a silicone elastomer containing a small amount (0.05%) of MWCNTs. All the data indicate that independent of the bulk properties, the surface properties affect settlement, and more particularly, the fouling-release behaviour, of the filled materials.

Publication metadata

Author(s): Beigbeder A, Degee P, Conlan SL, Mutton RJ, Clare AS, Pettitt ME, Callow ME, Callow JA, Dubois P

Publication type: Article

Publication status: Published

Journal: Biofouling

Year: 2008

Volume: 24

Issue: 4

Pages: 291-302

ISSN (print): 0892-7014

ISSN (electronic): 1026-7867

Publisher: Taylor & Francis Ltd.

URL: http://dx.doi.org/10.1080/08927010802162885

DOI: 10.1080/08927010802162885

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