Author:
Kolle Stefan,Ahanotu Onyemaechi,Meeks Amos,Stafslien Shane,Kreder Michael,Vanderwal Lyndsi,Cohen Lucas,Waltz Grant,Lim Chin Sing,Slocum Dave,Greene Elisa Maldonado,Hunsucker Kelli,Swain Geoffrey,Wendt Dean,Teo Serena Lay-Ming,Aizenberg Joanna
Abstract
AbstractFor many decades, silicone elastomers with oil incorporated have served as fouling-release coating for marine applications. In a comprehensive study involving a series of laboratory-based marine fouling assays and extensive global field studies of up to 2-year duration, we compare polydimethylsiloxane (PDMS) coatings of the same composition loaded with oil via two different methods. One method used a traditional, one-pot pre-cure oil addition approach (o-PDMS) and another method used a newer post-cure infusion approach (i-PDMS). The latter displays a substantial improvement in biofouling prevention performance that exceeds established commercial silicone-based fouling-release coating standards. We interpret the differences in performance between one-pot and infused PDMS by developing a mechanistic model based on the Flory–Rehner theory of swollen polymer networks. Using this model, we propose that the chemical potential of the incorporated oil is a key consideration for the design of future fouling-release coatings, as the improved performance is driven by the formation and stabilization of an anti-adhesion oil overlayer on the polymer surface.
Publisher
Springer Science and Business Media LLC
Cited by
12 articles.
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