Journal
MATERIALS LETTERS
Volume 311, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.matlet.2021.131555
Keywords
Superhydrophobic; PVDF-HFP; Nanoimprint lithography; Micropillar; Surface free energy
Funding
- La Trobe University Leadership RFA Grant by the School of Engineering and Mathematical Sciences (SEMS), La Trobe University.
- Collaboration and Research Engagement (CaRE) Grant by the School of Engineering and Mathematical Sciences (SEMS), La Trobe University.
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Nanoimprint lithography was used to fabricate superhydrophobic PVDF-HFP films with uniform micropillar arrays, increasing the hydrophobicity. Coating the films with a self-assembled monolayer of silane further improved their hydrophobicity, resulting in superhydrophobic behavior.
Nanoimprint lithography was employed in this study to fabricate superhydrophobic polyvinylidene fluoride-cohexafluoropropylene (PVDF-HFP) films. The nanoimprinted PVDF-HFP films exhibited uniform micropillar arrays on their surfaces. The difference in water contact angle between nanoimprinted and neat PVDF-HFP films indicated the involvement of surface micropillars in increasing the hydrophobicity of PVDF-HFP. After coating the nanoimprinted PVDF-HFP films with the self-assembled monolayer of silane, the surface free energy of the films further reduced. This surface treatment improved the hydrophobicity of the imprinted PVDF-HFP films and helped them to exhibit superhydrophobic behavior.
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