FABRICATION OF HYDROPHOBIC COATINGS ON BETULA ALNOIDES WOOD WITH DIFFERENT ALKYLTRICHLOROSILANES

Yulan Jian, Hui Wan, Kaimeng Xu, Yaru Zhang and Linkun Xie
Additional contact information
Yulan Jian: Yunnan Provincial Key Laboratory of Wood Adhesives and Glued Products, Southwest Forestry University, Kunming 650224, Yunnan, P. R. China
Hui Wan: Yunnan Provincial Key Laboratory of Wood Adhesives and Glued Products, Southwest Forestry University, Kunming 650224, Yunnan, P. R. China
Kaimeng Xu: Yunnan Provincial Key Laboratory of Wood Adhesives and Glued Products, Southwest Forestry University, Kunming 650224, Yunnan, P. R. China
Yaru Zhang: Yunnan Provincial Key Laboratory of Wood Adhesives and Glued Products, Southwest Forestry University, Kunming 650224, Yunnan, P. R. China
Linkun Xie: Yunnan Provincial Key Laboratory of Wood Adhesives and Glued Products, Southwest Forestry University, Kunming 650224, Yunnan, P. R. China

Surface Review and Letters (SRL), 2022, vol. 29, issue 12, 1-8

Abstract: To study the hydrophobic properties of Betula alnoides wood modified by alkyltrichlorosilanes, four alkyltrichlorosilanes with different chain lengths were used to prepare hydrolytic solutions by adding 0.25% (v/v) of alkyltrichlorosilane to anhydrous toluene, and the wood samples were immersed in the hydrolytic solutions for 4 h. The surface chemical compositions of the samples were analyzed by X-ray photoelectron spectroscopy (XPS) and Varian 640-IR Fourier Infrared Spectrometer (ATR-FTIR), the surface morphology of the samples was observed by scanning electron microscopy (SEM), and the wettability of the modified wood was investigated using an optical contact angle goniometer. The results demonstrated that treatment with alkyltrichlorosilanes introduced Si and low surface energies of –CH2 and –CH3 on the surface of Betula alnoides wood. The –CH2 and –CH3 content increased with the increase in chain length. Alkyltrichlorosilanes formed a different micro or nanoscale roughness on the surfaces of the wood samples. The water contact angles of all coatings of alkyltrichlorosilanes are greater than 131.3±2.4∘, and greater than 115.5±0.9∘ after 180 s. The water absorption decreases with the increase in chain length. The water absorption of the uncoated sample is 44.0±1.9 wt.%, while those of samples modified by MTCS and OTCS are 18.0±0.9 wt.% and 11.0±0.0 wt.%, respectively.

Keywords: Alkyltrichlorosilane; Betula alnoides wood; hydrophobicity; surface chemical composition (search for similar items in EconPapers)
Date: 2022
References: Add references at CitEc
Citations:

Downloads: (external link)
http://www.worldscientific.com/doi/abs/10.1142/S0218625X22501657
Access to full text is restricted to subscribers

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:wsi:srlxxx:v:29:y:2022:i:12:n:s0218625x22501657

Ordering information: This journal article can be ordered from

DOI: 10.1142/S0218625X22501657

Access Statistics for this article

Surface Review and Letters (SRL) is currently edited by S Y Tong

More articles in Surface Review and Letters (SRL) from World Scientific Publishing Co. Pte. Ltd.
Bibliographic data for series maintained by Tai Tone Lim ().