Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2021 Jul 23;11(8):1885.
doi: 10.3390/nano11081885.

A Superhydrophobic, Antibacterial, and Durable Surface of Poplar Wood

Xinyu Wu  1   2 , Feng Yang  3 , Jian Gan  1   2 , Zhangqian Kong  1   2 , Yan Wu  1   2
Affiliations

A Superhydrophobic, Antibacterial, and Durable Surface of Poplar Wood

Xinyu Wu et al. Nanomaterials (Basel). .

Abstract

The silver particles were grown in situ on the surface of wood by the silver mirror method and modified with stearic acid to acquire a surface with superhydrophobic and antibacterial properties. Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and X-ray energy spectroscopy (XPS) were used to analyze the reaction mechanism of the modification process. Scanning electron microscopy (SEM) and contact angle tests were used to characterize the wettability and surface morphology. A coating with a micro rough structure was successfully constructed by the modification of stearic acid, which imparted superhydrophobicity and antibacterial activity to poplar wood. The stability tests were performed to discuss the stability of its hydrophobic performance. The results showed that it has good mechanical properties, acid and alkali resistance, and UV stability. The durability tests demonstrated that the coating has the function of water resistance and fouling resistance and can maintain the stability of its hydrophobic properties under different temperatures of heat treatment.

Keywords: antimicrobial properties; durability; superhydrophobicity; wood modification.

PubMed Disclaimer

Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
The infrared spectra (a) and X-ray diffraction spectra (b) of wood@Ag and wood@Ag@SA.
Figure 2
Figure 2
(a) The XPS survey of wood@Ag and wood@Ag@SA; (b) Ag 3d XPS spectra of wood@Ag; (c) C 1s XPS spectra of wood @Ag; (d) O 1s spectra of wood@Ag; (e) the atom amount distribution of wood@Ag and wood@Ag@SA; (f) Ag 3d XPS spectra of wood@Ag@SA; (g) C 1s XPS spectra of wood @Ag@SA; (h) O 1s spectra of wood@Ag@SA.
Figure 3
Figure 3
The modification mechanism of wood@Ag@SA.
Figure 4
Figure 4
(a) SEM images of wood@Ag at 200 magnification; (b) SEM images of wood@Ag at 8000 magnification; (c) SEM images of wood@Ag@SA at 200 magnification; (d) SEM images of wood@Ag@SA at 8000 magnification and wood@Ag@SA; (e) EDS images of wood@Ag@SA; (f) WCA test of wood@Ag@SA; (g) water bouncing test of wood@Ag@SA.
Figure 5
Figure 5
The antimicrobial mechanism of wood@Ag@SA.
Figure 6
Figure 6
The WCAs of wood@Ag@SA after the mechanical wear resistance test (a) and after immersion in HCl solution (pH = 1) and NaOH solution (pH = 12) (b), and after exposure to a 365 nm UV lamp for 6 h (c).
Figure 7
Figure 7
The images of different contaminants on the wood@Ag@SA (a) Changes of water adsorption for wood@Ag@SA as a function of time after immersion in water; (b) changes of WCA for wood@Ag@SA as a function of time after being treated in a constant temperature blast drying oven at the temperature of 20 °C, 40 °C, 60 °C, 80 °C, 80 °C, and 120 °C for six hours (c).
See this image and copyright information in PMC

References

    1. Spear M.J., Curling S.F., Dimitriou A., Ormondroyd G.A. Review of Functional Treatments for Modified Wood. Coatings. 2021;11:327. doi: 10.3390/coatings11030327. - DOI
    1. Liu X., Timar M.C., Varodi A.M. A comparative study on the artificial UV and natural ageing of beeswax and Chinese wax and influence of wax finishing on the ageing of Chinese Ash (Fraxinus mandshurica) wood surfaces. J. Photochem. Photobiol. B-Biol. 2019;201 doi: 10.1016/j.jphotobiol.2019.111607. - DOI - PubMed
    1. Li R., Fang L., Xu W., Xiong X., Wang X. Effect of Laser Irradiation on the Surface Wettability of Poplar Wood. Sci. Adv. Mater. 2019;11:655–660. doi: 10.1166/sam.2019.3450. - DOI
    1. Janesch J., Arminger B., Gindl-Altmutter W., Hansmann C. Superhydrophobic coatings on wood made of plant oil and natural wax. Prog. Org. Coat. 2020;148 doi: 10.1016/j.porgcoat.2020.105891. - DOI
    1. Zhan K., Lu Q., Xia S., Guo C., Zhao S., Gao W., Yang L., Morrell J.J., Yi T., Xie L., et al. A cost effective strategy to fabricate STA@PF@Cu2O hierarchical structure on wood surface: Aimed at superhydrophobic modification. Wood Sci. Technol. 2021;55:565–583. doi: 10.1007/s00226-021-01269-7. - DOI

LinkOut - more resources