Wettability modification of electrospun poly(ε-caprolactone) fiber by femtosecond laser irradiation
Source abstract
Abstract
The effect of femtosecond laser irradiation on the wettability of electrospun poly(ɛ-caprolactone) fiber mesh substrates was studied. It was observed that water contact angles on treated substrates decreased as laser power increased. Nanometer-scale gold coating on the surfaces allowed the effect of change in morphology on wettability to be quantified independently from the effect of chemistry change. Morphology change and chemistry change were both found to have independent hydrophilic effects on the surface wettability change that increased with laser power. As laser power increased, the treated sample surface transitioned from a rough fibrous mesh to more as a porous flat film. A laser power of 4.5 mW was found to divide both the surface morphology change and morphology-induced wettability change into high-power and low-power regimes. The Cassie-Baxter model successfully predicted the wettability of gold-coated surfaces using measured characteristics of surfaces from both regimes. All the laser-treated and untreated surfaces investigated in this work exhibited robust hydrophobic behavior.
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Research context
OpenAlex topics: Surface Modification and Superhydrophobicity · Advanced Sensor and Energy Harvesting Materials · Electrospun Nanofibers in Biomedical Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Laboratory for Multiscale Processing and Characterization, The Ohio State University , 1248 Arthur E Adams Drive, Columbus, Ohio 43221 and Department of Materials Science and Engineering, The Ohio State University, 477 Watts Hall, 2041 College Road, Columbus, Ohio 43210
Materials Science and Technology Division, Oak Ridge National Laboratory , One Bethel Road, P.O. Box 2008, MS-6095, Oak Ridge, Tennessee 37831-6095
The Ohio State University Department of Materials Science and Engineering, , 477 Watts Hall, 2041 College Road, Columbus, Ohio 43210
The Ohio State University Laboratory for Multiscale Processing and Characterization, The Ohio State University, 1248 Arthur E Adams Drive, Columbus, Ohio 43221 and Department of Materials Science and Engineering, , 477 Watts Hall, 2041 College Road, Columbus, Ohio 43210
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