Journal
LANGMUIR
Volume 37, Issue 14, Pages 4387-4394Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.langmuir.1c00479
Keywords
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Funding
- Innosuisse
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Despite advancements in low-surface energy surface fabrication, environmental consequences can be a serious issue, especially in industrial contexts.
A new fluorinated-polymer coating has been developed, applied simply from an aqueous environment, and provides an oleo/hydrophobic surface.
The coating is achieved through copolymerizing three different methacrylate monomers, each with a specific function, and treating the system with UV light to yield the desired surface properties.
Despite major advancements in the fabrication of low-surfaceenergy surfaces, the environmental consequences of their fabrication can be a serious issue, particularly in an industrial context. This is especially the case for fluorine-based coatings, which often require fluorinated solvents for their processing and applications. These solvents are not only detrimental to the ozone layer but also represent a potential workplace hazard because they tend to bioaccumulate. We describe the design, synthesis, and characterization of a new fluorinated-polymer coating that can be simply applied to surfaces from an aqueous environment using a dip-coating technique. This was made possible by copolymerizing three different methacrylate monomers, each serving a specific function. Namely, fluorinated methacrylate providing oleo/ hydrophobicity, photocleavable polyethylene glycol (PEG) methacrylate promoting water solubility of the copolymer, and thioether-based methacrylate serving as an anchoring unit to a number of different substrates. This copolymer is initially grafted to the surface as a monolayer from an aqueous solvent, after which the system is treated with ultraviolet (UV) light, cleaving away the protecting PEG moieties to yield an oleo/hydrophobic surface.
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