Flexible Hydrophobic Antifouling Coating with Oriented Nanotopography and Nonleaking Capsaicin

ACS Applied Materials & Interfaces
Zhiwei LuLijie Dong

Abstract

Incorporating natural product antifoulants (NPAs) into coatings with controlled surface topography is considered a promising way to suppress marine fouling. However, the rapid leakage of NPAs and the relatively complicated process of constructing well-patterned topography remain unresolved problems for practical applications. In this work, capsaicin bonded to CoFe2O4/gelatin magnetic nanoparticles was mixed with a polydimethylsiloxane (PDMS)-based block copolymer. When applied together by a simple spray-coating method, these materials formed a film. The leakage of capsaicin was restrained by the chemical bonds with the CoFe2O4/gelatin nanospheres. The primary nanorough structure was constructed by the phase separation of the PDMS-based copolymer. The secondary nanorough structure was formed by the incorporation of capsaicin-loaded CoFe2O4/gelatin nanospheres, which were demonstrated to improve the orientation of the PDMS-based block copolymer chains. The combination of oriented nanotopography and nonleaking capsaicin endows the coating with enhanced, long-lasting antifouling ability.

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Citations

Jan 21, 2019·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Huichao JinLimei Tian
Aug 7, 2020·Biomaterials Science·Qinggele Borjihan, Alideertu Dong
Apr 10, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Artemis TsagdiJoannis K Kallitsis
Feb 9, 2021·Forensic Science International. Genetics·Fatih InciUtkan Demirci
Jan 12, 2020·The Science of the Total Environment·Xuan WangXiaohui Jiang

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