The marine biofouling of surfaces submerged in seawater is a worldwide problem caused by the accumulation of marine living organisms. In the case of ships, marine biofouling decreases the fuel efficiency, cruising speed, and increases the frequency and cost of maintenance. For these reasons, the dev...
The marine biofouling of surfaces submerged in seawater is a worldwide problem caused by the accumulation of marine living organisms. In the case of ships, marine biofouling decreases the fuel efficiency, cruising speed, and increases the frequency and cost of maintenance. For these reasons, the development of anti-fouling coatings is needed to prevent the attachment of these undesirable organisms. In this study, self-polishing copolymers containing two different Zn acrylate monomers in varying ratios were designed and synthesized for marine anti-biofouling applications. Zinc methacrylate is a well-known component of anti-biofouling coatings. In this study, we synthesized zinc 3-(allyloxy)propanoate as a new self-polishing monomer to be incorporated with other monomer units like a methyl methacrylate, 2-hydroxyethyl methacrylate, and ethyl acrylate in the desired copolymers. The properties of the new self-polishing copolymers were compared with those of the corresponding polymers containing zinc methacrylate. The self-polishing copolymers containing the new zinc monomers were characterized by proton nuclear magnetic spectroscopy, gel permeation chromatography, energy dispersive spectroscopy, and scanning electron microscopy. The polishing rate was determined by measuring the film thickness after dynamic immersion tests. Compared with the self-polishing copolymer resins containing zinc methacrylate, the experimental results suggest that the self-polishing copolymer resins containing zinc 3-(allyloxy)propanoate demonstrate good anti-biofouling properties. Also, amphiphilic random copolymers consisting of hydrophobic styrene and hydrophilic 2-hydroxyethyl methacrylate (HEMA)/(ethylene glycol) methacrylate (EGMA) were designed and synthesized for anti-biofouling coating materials in buffered aqueous solutions. Random copolymers such as PS-PEGMA, PS-PHEMA, and PS-PEGMA-PHEMA were synthesized, with different monomer ratios, by radical polymerization. The structures and molecular weights of the synthesized polymers were determined by 1H-NMR and gel permeation chromatography, respectively. Protein adsorption experiments on the polymer surfaces were carried out using fluorescein isothiocyanate conjugate-labeled bovine serum albumin. The hydrophilic EGMA and HEMA containing polymers showed a much better anti-biofouling effect than the PS reference, and PS-PEGMA was a more effective anti-foulant than PS-PHEMA or PS-PEGMA-PHEMA.
The marine biofouling of surfaces submerged in seawater is a worldwide problem caused by the accumulation of marine living organisms. In the case of ships, marine biofouling decreases the fuel efficiency, cruising speed, and increases the frequency and cost of maintenance. For these reasons, the development of anti-fouling coatings is needed to prevent the attachment of these undesirable organisms. In this study, self-polishing copolymers containing two different Zn acrylate monomers in varying ratios were designed and synthesized for marine anti-biofouling applications. Zinc methacrylate is a well-known component of anti-biofouling coatings. In this study, we synthesized zinc 3-(allyloxy)propanoate as a new self-polishing monomer to be incorporated with other monomer units like a methyl methacrylate, 2-hydroxyethyl methacrylate, and ethyl acrylate in the desired copolymers. The properties of the new self-polishing copolymers were compared with those of the corresponding polymers containing zinc methacrylate. The self-polishing copolymers containing the new zinc monomers were characterized by proton nuclear magnetic spectroscopy, gel permeation chromatography, energy dispersive spectroscopy, and scanning electron microscopy. The polishing rate was determined by measuring the film thickness after dynamic immersion tests. Compared with the self-polishing copolymer resins containing zinc methacrylate, the experimental results suggest that the self-polishing copolymer resins containing zinc 3-(allyloxy)propanoate demonstrate good anti-biofouling properties. Also, amphiphilic random copolymers consisting of hydrophobic styrene and hydrophilic 2-hydroxyethyl methacrylate (HEMA)/(ethylene glycol) methacrylate (EGMA) were designed and synthesized for anti-biofouling coating materials in buffered aqueous solutions. Random copolymers such as PS-PEGMA, PS-PHEMA, and PS-PEGMA-PHEMA were synthesized, with different monomer ratios, by radical polymerization. The structures and molecular weights of the synthesized polymers were determined by 1H-NMR and gel permeation chromatography, respectively. Protein adsorption experiments on the polymer surfaces were carried out using fluorescein isothiocyanate conjugate-labeled bovine serum albumin. The hydrophilic EGMA and HEMA containing polymers showed a much better anti-biofouling effect than the PS reference, and PS-PEGMA was a more effective anti-foulant than PS-PHEMA or PS-PEGMA-PHEMA.
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