PFAS-Free Fabric Coating Using Slippery Covalently-Attached Liquid Surfaces (SCALS)
발표자
정현정 (한국화학연구원/울산과학기술원)
연구책임자
진영재 (한국화학연구원)
초록
내용
Per- and polyfluoroalkyl substances (PFAS) offered exceptional water repellency, self-cleaning, and anti-fouling properties, but faced strict regulations due to bioaccumulation and toxicity. In this study, we developed a PFAS-free coating strategy based on polydimethylsiloxane (PDMS), by constructing a slippery covalently-attached liquid surface (SCALS) on textile substrates. A reactive triethoxysilane monomer bearing a functional group and a mono-terminated PDMS with a complementary moiety were co-dissolved in an organic solvent and uniformly spray-coated onto fabric. During subsequent thermal curing, an interfacial reaction occurred between the two components, resulting in the covalent anchoring of the liquid PDMS layer onto the fiber surface. 1H NMR and FT-IR spectroscopy confirmed the formation of chemical bonds, and SEM/EDS analyses demonstrated uniform PDMS coverage on the textile surface. The resulting coated fabric exhibited a low water sliding angle and significantly reduced surface energy, highlighting the potential of this method as a fluorine-free, water-repellent, textile coating