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- Title
Non-fluorine surface modification of acetylated birch for improved water repellence.
- Authors
Yin, Haiyan; Sedighi Moghaddam, Maziar; Tuominen, Mikko; Dėdinaitė, Andra; Wålinder, Magnus; Swerin, Agne
- Abstract
In this work, a non-fluorinated surface treatment, i.e., hydrophobized silicone nanofilaments, was applied on both birch and acetylated birch wood samples via a gas-phase based reaction. A superhydrophobic behavior was observed on both the surface-modified samples as revealed by the static water contact angles (CAs) greater than 160°, also valid for samples prepared with the shortest reaction time of 1 h. The dynamic wettability behavior of the samples was studied by a multicycle Wilhelmy plate method. The surface-modified acetylated birch exhibited a pronounced enhanced water resistance, resulting in very low water uptake of 3 ± 1 wt% after 100 cycles, which was not only about 29 and 5 times lower than that of the non-surface-modified birch and acetylated birch, respectively, but also three times lower than that of the surface-modified birch. Moreover, the aesthetic appearance of the acetylated wood was maintained as the surface modification only resulted in a small color change. This work shows the potential of preparing super water-repellent wood by non-fluorinated surface modification.
- Subjects
BIRCH; SURFACE preparation; CONTACT angle; GAS phase reactions; OIL spill cleanup; WETTING
- Publication
Holzforschung: International Journal of the Biology, Chemistry, Physics, & Technology of Wood, 2021, Vol 75, Issue 9, p857
- ISSN
0018-3830
- Publication type
Article
- DOI
10.1515/hf-2020-0236