Diffusion of surface-active amphiphiles in silicone-based fouling-release coatings

Abstract

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Field study of the long-term release of block copolymers from fouling-release coatings

“…These oils segregate from the bulk and cover the surface of the coatings upon immersion [16,17]. On the surface of the coatings, one of the copolymer blocks acts as an anchor to the surface and imparts stability to the copolymer molecule [18,19].…”

Water erodible coatings based on a hydrolyzable PDMS/polyester network

“…The results are the average of at least 5 measurements on 3 different samples. The dynamic mechanical analyses were performed using free standing films of [10][11][12][13][14] mm length, [8][9][10] mm width and [0.6-1.0] mm thick.…”

“…Many researchers like Galli's group and Grunlan's group have focused their research on the addition of small amounts of amphiphilic surface-active (co)polymers (< 10 wt.% relative to the dry film) dispersed within the silicone matrix [6][7][8][9][10][11]. In this manner they could design coatings with chemically evolving surfaces during water immersion [12]. The most efficient amphiphilic copolymers contain PEGylated-perfluoroalkyl pending groups which can migrate to the extreme surface of the PDMS elastomer, and provide an ambiguous and unpredictable surface towards fouling species [13][14][15].…”

New insights into developing antibiofouling surfaces for industrial photobioreactors

“…36 mJ/m 2 (hereinafter named Vogler's minimum) present excellent antibiofouling properties compared to the low energy surfaces (LES) located at Baier's minimum (Seetho et al, ). Currently, the silicone‐FRC coatings, which incorporate amphiphilic block copolymers (mainly polyethylene glycol–poly(dimethylsiloxane) [PEG–PDMS]), are a good commercial nontoxic alternative to prevent biofouling in marine environments, especially under dynamic conditions (Camós‐Noguer, Olsen, Hvilsted, & Kiil, ). These materials, both transparent and opaque, could be respectively a promising alternative for fabricating closed and open PBRs, where biofouling formation has not yet been well studied.…”