An engineering-oriented approach to construct rough micro/nano-structures for anticorrosion and antifouling application

Slippery liquid-infused porous surfaces (SLIPS) have attracted considerable attention because of their multiple beneficial applications. In this report, styrene-butadiene-styrene triblock copolymer (SBS) and SBS-SiO2 films with 3D interconnected net-like structures were constructed via a simple solution blow spinning method. The original films exhibited excellent hydrophobicity with a contact angle of 145°, after infiltration with the lubricant, the contact angle of SLIPS was reduced to 110°. The antifouling and anticorrosion performance of the hydrophobic surfaces and SLIPS were also studied. The hydrophobic surfaces showed inferior antifouling and anticorrosion performance because of the large pores in the films, significantly, the lubricant-infused surface demonstrated dramatically improved antifouling and anticorrosion performance. More interestingly, compared with a silicone oil-infused surface, the perfluoropolyether oil-infused surface displayed durable anticorrosion properties over increased immersion durations. The failure mechanism of lubricants was explored. The combined anticorrosion and antifouling capability of the constructed microstructure has excellent potential application in marine environments. [Display omitted] •Hydrophobic surfaces with 3D interconnected net-like structures were obtained via a simple solution blow spinning method.•The SLIPS were successfully achieved and displayed improved antifouling and durable anticorrosion ability.•Different lubricants were compared for the anticorrosion performance. The protection and failure mechanism were explored.