TiO₂ antifouling coating based on epoxy-modified tung oil waterborne resin

Abstract

The eco-friendly functionalized TiO2/polymer antifouling (AF) coating was successfully synthesized by dispersing TiO2 nanoparticles in waterborne epoxy-modified tung oil resin. The AF effectiveness of coating was evaluated toward Staphylococcus aureus ( S. aureus, ATCC6538), Escherichia coli ( E. coli, ATCC8739) and diatom ( Cyclotella sp., FACHB-1635). The nanoTiO2/polymer AF coating showed good antimicrobial activity both under the light and dark conditions by comparison with the pristine TiO2 nanoparticles and bulk polymer. Under light irradiation for 50 min, the AF coating showed only 8.4% and 8% survival rate for S. aureus and E. coli. In addition, The AF coatings exhibited favorable inhibition efficacy toward the growth and adhesion of Cyclotella sp., and the efficacy was enhanced with the increase of TiO2 content. It can be concluded that TiO2 nanoparticles endow the AF coatings with promoted fouling resistance properties.

Monomers and Macromolecular Materials from Renewable Resources: State of the Art and Perspectives

“…Despite the readiness of being converted to surface-dry films given by its prompt susceptibility to radical oxydopolymerization, tung oil can be homo- and copolymerized, in a strategy that was first described in the late 1960s and again in the early 1980s [ 102 ]. In the last years, however, the number of related publications increased considerably, and some relevant examples involve the preparation of vitrimers [ 99 ], UV-led curable [ 103 ] and antifouling [ 104 ], self-healing smart coatings [ 92 , 105 ], and tung oil/furfuryl alcohol networks [ 106 ], designed following a previous investigation on the cationic polymerization of tung oil and methyl α-eleoestearate [ 107 ].…”

Research Progress of Tung Oil/UV Photocomposite Curing Material

“…Epoxy resin can also be in the middle or exhibit a ring-like structure. After epoxidation modification, TO can improve its curing activity, achieve self-crosslinking curing and can be used as a curing agent [98]. TO is an important curing agent for manifold alkali-based epoxy resins.…”

Progress in Marine Antifouling Coatings: Current Status and Prospects

“…After 24 h cycle (14 h of light and 10 h of dark environment), more than 80% of larvae died before attachment. However, more importantly, after 48 h, the remaining larvae still attached to the material did not develop into viable larvae, proving that this type of coating had a strong inhibitory effect at the early stage of biofouling formation [144,145].…”