Fluorine-Free Super-Liquid-Repellent Surfaces: Pushing the Limits of PDMS.

ABSTRACT: Methods for fabricating super-liquid-repellent surfaces have typically relied on perfluoroalkyl substances. However, growing concerns about the environmental and health effects of perfluorinated compounds have caused increased interest in fluorine-free alternatives. Polydimethylsiloxane (PDMS) is most promising. In contrast to fluorinated surfaces, PDMS-coated surfaces showed only superhydrophobicity. This raises the question whether the poor liquid repellency is caused by PDMS interacting with the probe liquid or whether it results from inappropriate surface morphology. Here, we demonstrate that a well-designed two-tier structure consisting of silicon dioxide nanoparticles combined with surface-tethered PDMS chains allows super-liquid-repellency toward a range of low surface tension liqui

SUBMITTER: Hegner KI 

PROVIDER: S-EPMC10141414 | biostudies-literature | 2023 Apr

REPOSITORIES: biostudies-literature