Amphiphilic hydrolyzable polydimethylsiloxane-b-poly(ethyleneglycol methacrylate-co-trialkylsilyl methacrylate) block copolymers for marine coatings. II. Antifouling laboratory tests and field trials. Issue 4 (20th April 2020)

• Record Type: Journal Article
• Authors: Guazzelli, Elisa; Martinelli, Elisa; Pelloquet, Lucile; Briand, Jean-François; Margaillan, André; Bunet, Robert; Galli, Giancarlo; Bressy, Christine
• Is Part Of: Biofouling. Volume 36:Issue 4(2020)
• Page Start: 378
• Page End: 388
• Publication Date: 2020-04-20
• Subjects: Amphiphilic copolymers -- amphiphilic additive -- antifouling -- marine fouling -- coatings -- PDMS; Marine fouling organisms -- Periodicals; Materials -- Biodeterioration -- Periodicals; Fouling -- Periodicals; Biodegradation -- Periodicals; Environmental Microbiology -- Periodicals; Water Microbiology -- Periodicals; 576.165
• DOI: 10.1080/08927014.2020.1762868
• Languages: English
• ISSNs: 0892-7014

Abstract

Abstract: Poly(dimethylsiloxane) (PDMS) elastomer coatings containing an amphiphilic hydrolyzable diblock copolymer additive were prepared and their potential as marine antifouling and antiadhesion materials was tested. The block copolymer additive consisted of a PDMS first block and a random poly(trialkylsilyl methacrylate (TRSiMA, R = butyl, isopropyl)- co -poly(ethyleneglycol) methacrylate (PEGMA) copolymer second block. PDMS- b -TRSiMA block copolymer additives without PEGMA units were also used as additives. The amphiphilic character of the coating surface was assessed in water using the captive air bubble technique for measurements of static and dynamic contact angles. The attachment of macro- and microorganisms on the coatings was evaluated by field tests and by performing adhesion tests to the barnacle Amphibalanus amphitrite and the green alga Ulva rigida . All the additive-based PDMS coatings showed better antiadhesion properties to A. amphitrite larvae than to U. rigida spores. Field tests provided meaningful information on the antifouling and fouling release activity of coatings over an immersion period of 23 months.