Fouling release nanostructured coatings based on PDMS-polyurea segmented copolymers
Giannelis, Emmanuel P.
Finlay, John A.
Callow, Maureen E.
Callow, James A.
KAUST Grant NumberKUS-C1-018-02
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AbstractThe bulk and surface characteristics of a series of coatings based on PDMS-polyurea segmented copolymers were correlated to their fouling release performance. Incorporation of polyurea segments to PDMS backbone gives rise to phase separation with the extensively hydrogen bonded hard domains creating an interconnected network that imparts mechanical rigidity. Increasing the compositional complexity of the system by including fluorinated or POSS-functionalized chain extenders or through nanoclay intercalation, confers further thermomechanical improvements. In analogy to the bulk morphology, the surface topography also reflects the compositional complexity of the materials, displaying a wide range of motifs. Investigations on settlement and subsequent removal of Ulva sporelings on those nanostructured surfaces indicate that the work required to remove the microorganisms is significantly lower compared to coatings based on standard PDMS homopolymer. All in all, the series of materials considered in this study demonstrate advanced fouling release properties, while exhibiting superior mechanical properties and, thus, long term durability. © 2010 Elsevier Ltd.
CitationFang J, Kelarakis A, Wang D, Giannelis EP, Finlay JA, et al. (2010) Fouling release nanostructured coatings based on PDMS-polyurea segmented copolymers. Polymer 51: 2636–2642. Available: http://dx.doi.org/10.1016/j.polymer.2010.04.024.
SponsorsThe work was supported by the Office of Naval Research. E.P. Giannelis acknowledges the support of Award No. KUS-C1-018-02, made by King Abdullah University of Science and Technology (KAUST). We acknowledge facility support through the Cornell Center for Materials Research (CCMR) and the Nanobiotechnology Center (NBTC).