Antifouling coatings based on covalently cross-linked agarose film via thermal azide-alkyne cycloaddition
writer：Li Qun Xu, Dicky Pranantyo, Koon-Gee Neoh, En-Tang Kang, Serena Lay-Ming Teo, Guo Dong Fu
keywords：Agarose, Thermal azide-alkyne cycloaddition, Antifouling, Copper-free
source：期刊
specific source：Colloids and Surfaces B: Biointerfaces
Issue time：2016年
Coatings based on thin films of agarose-poly(ethylene glycol) (Agr-PEG) cross-linkedsystems are developed as environmentally-friendly and fouling-resistant marine coatings. The Agr-PEG cross-linked systems were prepared via thermal azide-alkyne cycloaddition (AAC) using azido-functionalized Agr (AgrAz) and activated alkynyl-containing poly(2-propiolamidoethyl methacrylate-co-poly(ethylene glycol)methyl ether methacrylate) P(PEMA-co-PEGMEMA) random copolymers as the precursors. The Agr-PEG cross-linked systems were further deposited onto a SS surface, pre-functionalized with an alkynyl-containing biomimetic anchor, dopamine propiolamide, to form a thin film after thermal treatment. The thin film-coated SS surfaces can effectively reduce the adhesion of marine algae and the settlement of barnacle cyprids. Upon covalent cross-linking, the covalently cross-linked Agr-PEG films coated SS surfaces exhibit good stability in flowing artificial seawater, and enhanced resistance to the settlement of barnacle cyprids, in comparison to that of the surfaces coated with physically cross-linked AgrAz films.