期刊
ACS APPLIED POLYMER MATERIALS
卷 5, 期 5, 页码 3524-3533出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsapm.3c00199
关键词
antifouling coating; polysiloxane; oligosiloxane nanocluster; self-enriched; strong adhesion
Researchers have developed a novel antifouling coating that exhibits both superior anti-adhesion ability and strong substrate adhesion, making it suitable for various applications. The coating is composed of bis-silane-terminated polyurea and a reactive amphiphilic polymer with fluorocarbon and poly(ethylene glycol) side chains. The coating demonstrates high transparency, high tensile strength, resistance to protein and bacterial fouling, and strong adhesion to various substrates.
The coexistence of superior antifouling ability and strong substrate adhesion is a typical trade-off for a silicone coating but is highly desirable in numerous applications. Herein, we present a surface-enriched antifouling coating consisting of a bis-silane-terminated polyurea (SPU), an oligosiloxane nanocluster, and a bi-silanol-terminated poly(dimethylsiloxane) with fluorocar-bon and poly(ethylene glycol) side chains as a reactive amphiphilic polymer (RAP). The oligosiloxane nanoclusters can cross-link the flexible SPU into a tough polymer network and interlink the polymer network to the substrate, whereas the low-surface-energy RAP can self-enrich on the surface during coating formation. Such a polysiloxane coating exhibits high transparency (>85% transmittance), high tensile strength (similar to 12 MPa), superior fouling resistance against proteins and bacteria, and strong adhesion strength on various substrates including glass, ceramic, steel, Ti, and epoxy (3-15 MPa). This research provides a universal and tunable approach for the future design of antifouling coatings in flexible electronics, medical devices, and marine industries.
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