title: Combinatorial materials research applied to the development of new surface coatings XVI: fouling-release properties of amphiphilic polysiloxane coatings.
abstract: High-throughput methods were used to prepare and characterize the fouling-release (FR) properties of an array of amphiphilic polysiloxane-based coatings possessing systematic variations in composition. The coatings were derived from a silanol-terminated polydimethylsiloxane, a silanol-terminated polytrifluorpropylmethylsiloxane (CF3-PDMS), 2-[methoxy(polyethyleneoxy)propyl]-trimethoxysilane (TMS-PEG), methyltriacetoxysilane and hexamethyldisilazane-treated fumed silica. The variables investigated were the concentration of TMS-PEG and the concentration of CF3-PDMS. In general, it was found that the TMS-PEG and the CF3-PDMS had a synergist effect on FR properties with these properties being enhanced by combining both compounds into the coating formulations. In addition, reattached adult barnacles removed from coatings possessing both TMS-PEG and relatively high levels of CF3-PDMS displayed atypical base-plate morphologies. The majority of the barnacles removed from these coatings exhibited a cupped or domed base-plate as compared to the flat base-plate observed for the control coating that did not contain TMS-PEG or CF3-PDMS. Coating surface analysis using water contact angle measurements indicated that the presence of CF3-PDMS facilitated migration of TMS-PEG to the coating/air interface during the film formation/curing process. In general, coatings containing both TMS-PEG and relatively high levels of CF3-PDMS possessed excellent FR properties.
authors: a Center for Nanoscale Science and Engineering , North Dakota State University , Fargo , USA.
authors: Shane J
authors: SJ
authors: Stafslien
authors: David
authors: D
authors: Christianson
authors: Justin
authors: J
authors: Daniels
authors: Lyndsi
authors: L
authors: VanderWal
authors: Andrey
authors: A
authors: Chernykh
authors: Bret J
authors: BJ
authors: Chisholm
mesh_terms: D000818:Animals; D018441:Biofilms / Q000187:drug effects; D057219:Biofouling / Q000517:prevention & control*; D020650:Combinatorial Chemistry Techniques; D003589:Cytophaga / Q000187:drug effects; D017377:Diatoms / Q000187:drug effects; D020632:Halomonas / Q000187:drug effects; D057166:High-Throughput Screening Assays; D012833:Siloxanes / Q000737:chemistry*; D013499:Surface Properties; D001468:Thoracica / Q000187:drug effects*
chemical_list: D012833:Siloxanes
keywords: amphiphilic; bacteria; barnacles; coatings; fouling-release; microalgae