Demonstration of Pattern Size Effects on Hydrophobic Nanocellulose Coatings with Regular Micron-Sized Island-like Geometrical Domains Created by Femtosecond Laser Micromachining DOI Creative Commons
Pieter Samyn, Patrick Cosemans, Olivier Malek

и другие.

Micromachines, Год журнала: 2025, Номер 16(3), С. 289 - 289

Опубликована: Фев. 28, 2025

As inspired by nature, wettability of bio-based material surfaces can be controlled combining appropriate surface chemistries and topographies mimicking the structure plant leaves or animals. The need for nanocellulose coatings with enhanced hydrophobic properties becomes technically relevant extending their applications in technological domain better protection lifetime coatings. In this work, water repellence spray-coated hydrophobically modified cellulose microfiber (mCMF coatings), nanofiber (mCNF coatings) was after femtosecond laser patterning. particular, influences different island-like pattern geometries sizes were systematically studied. patterns experimentally created single posts that have variable valleys (B = 30 to 15 µm) top area (T 120 µm), resulting good resolution down size beam diameter (15 µm). Depending on intrinsic homogeneity porosity sprayed mCMF mCNF coatings, quality is thinner more homogeneous nanofibrils. increase apparent contact angle patterned estimated from theoretical Cassie–Baxter state wetting shows maximum values up θs 128° 140° smallest parallel minimum hysteresis Δθ 14° < 9° coatings). study demonstrated patterning technology provides high flexibility adaptivity create dimensions hydrophobicity

Язык: Английский

Demonstration of Pattern Size Effects on Hydrophobic Nanocellulose Coatings with Regular Micron-Sized Island-like Geometrical Domains Created by Femtosecond Laser Micromachining DOI Creative Commons
Pieter Samyn, Patrick Cosemans, Olivier Malek

и другие.

Micromachines, Год журнала: 2025, Номер 16(3), С. 289 - 289

Опубликована: Фев. 28, 2025

As inspired by nature, wettability of bio-based material surfaces can be controlled combining appropriate surface chemistries and topographies mimicking the structure plant leaves or animals. The need for nanocellulose coatings with enhanced hydrophobic properties becomes technically relevant extending their applications in technological domain better protection lifetime coatings. In this work, water repellence spray-coated hydrophobically modified cellulose microfiber (mCMF coatings), nanofiber (mCNF coatings) was after femtosecond laser patterning. particular, influences different island-like pattern geometries sizes were systematically studied. patterns experimentally created single posts that have variable valleys (B = 30 to 15 µm) top area (T 120 µm), resulting good resolution down size beam diameter (15 µm). Depending on intrinsic homogeneity porosity sprayed mCMF mCNF coatings, quality is thinner more homogeneous nanofibrils. increase apparent contact angle patterned estimated from theoretical Cassie–Baxter state wetting shows maximum values up θs 128° 140° smallest parallel minimum hysteresis Δθ 14° < 9° coatings). study demonstrated patterning technology provides high flexibility adaptivity create dimensions hydrophobicity

Язык: Английский

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