Comparative analysis of two isocyanate-free urethane-based gels for antifouling applications. Issue 2 (4th January 2021)

• Record Type: Journal Article
• Authors: Vignesh, Vishal; Stafslien, Shane; Evans, Morgan; Wise, Kellen; Marmo, Alec; Tonks, Michael; Brennan, Anthony
• Is Part Of: Biofouling. Volume 37:Issue 2(2021)
• Page Start: 131
• Page End: 144
• Publication Date: 2021-01-04
• Subjects: Antifouling -- amphiphilic -- Taguchi -- non-isocyanate -- gels; Marine fouling organisms -- Periodicals; Materials -- Biodeterioration -- Periodicals; Fouling -- Periodicals; Biodegradation -- Periodicals; Environmental Microbiology -- Periodicals; Water Microbiology -- Periodicals; 576.165
• DOI: 10.1080/08927014.2020.1870679
• Languages: English
• ISSNs: 0892-7014

Abstract

Abstract: Amphiphilic gels consisting of acrylamide (AAM)/2-hydroxyethyl methacrylate (HEMA), hexafluorobutyl methacrylate (HFBMA) and non-isocyanate urethane dimethacrylate (NIUDMA) of varying molecular weights were compared. A three-level Taguchi analysis was performed using the amount of AAM/HEMA, HFBMA, NIUDMA and reaction time as dependent variables to determine the optimal formulation of the gels with maximized toughness and elastic modulus. The results were compared with commercial AF/FR Intersleek® coatings (IS 700, IS 900 and IS 1100SR) for their antifouling performance against a marine microalga ( Navicula incerta ), a marine bacterium ( Cellulophaga lytica ) and adult barnacles ( Amphibalanus amphitrite ). The toughness, elastic modulus and strain at break of the optimized AAM gels ranged from 3 to7 MPa, 25 to 72 MPa and 80% to 170%, respectively, whereas those of the optimized HEMA gels ranged from 1 to 3 MPa, 13 to 23 MPa and 76% to 160%, respectively. The gels, particularly AHN(E9) and HHN(E12), showed reductions of attachment compared with IS700 of up to 93% and 58%, respectively. Graphical Abstract: