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Article

Enhanced Anti-Mold Property and Mechanism Description of Ag/TiO2 Wood-Based Nanocomposites Formation by Ultrasound- and Vacuum-Impregnation

1
Key Laboratory of Wooden Materials Science and Engineering of Jilin Province, Beihua University, Jilin 132013, China
2
College of Science, Beihua University, Jilin 132013, China
3
State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012, China
4
College of Materials Science and Technology, Beijing Forestry University, Beijing 100083, China
*
Author to whom correspondence should be addressed.
Nanomaterials 2020, 10(4), 682; https://doi.org/10.3390/nano10040682
Received: 2 March 2020 / Revised: 28 March 2020 / Accepted: 1 April 2020 / Published: 4 April 2020
(This article belongs to the Special Issue Nanotechnology and Wood Science)
Ag/TiO2 wood-based nanocomposites were prepared by the methods of ultrasound impregnation and vacuum impregnation. The as-prepared samples were characterized by field emission scanning electron microscopy (FESEM), energy-dispersive spectroscopy (EDS), Fourier transform infrared spectroscopy (FTIR), mercury intrusion porosimetry (MIP), and water contact angles (WCAs). The anti-mold properties of the Ag/TiO2 wood-based nanocomposites were improved by 14 times compared to those of the original wood. The nano-Ag/TiO2, which was impregnated in the tracheid and attached to the cell walls, was able to form a two-stage rough structure and reduce the number of hydroxyl functional groups on the wood surfaces. The resulting decline of wood hydrophobic and equilibrium moisture content (EMC) destroyed the moisture environment necessary for mold survival. Ag/TiO2 was deposited in the wood pores, which reduced the number and volume of pores and blocked the path of mold infection. Thus, the anti-mold properties of the Ag/TiO2 wood-based nanocomposite were improved by cutting off the water source and blocking the mold infection path. This study reveals the anti-mold mechanism of Ag/TiO2 wood-based nanocomposites and provides a feasible pathway for wood-based nanocomposites with anti-mold functions. View Full-Text
Keywords: Ag/TiO2; wood-based composites; ultrasound impregnation; vacuum impregnation Ag/TiO2; wood-based composites; ultrasound impregnation; vacuum impregnation
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MDPI and ACS Style

Lin, L.; Cao, J.; Zhang, J.; Cui, Q.; Liu, Y. Enhanced Anti-Mold Property and Mechanism Description of Ag/TiO2 Wood-Based Nanocomposites Formation by Ultrasound- and Vacuum-Impregnation. Nanomaterials 2020, 10, 682. https://doi.org/10.3390/nano10040682

AMA Style

Lin L, Cao J, Zhang J, Cui Q, Liu Y. Enhanced Anti-Mold Property and Mechanism Description of Ag/TiO2 Wood-Based Nanocomposites Formation by Ultrasound- and Vacuum-Impregnation. Nanomaterials. 2020; 10(4):682. https://doi.org/10.3390/nano10040682

Chicago/Turabian Style

Lin, Lin, Jiaming Cao, Jian Zhang, Qiliang Cui, and Yi Liu. 2020. "Enhanced Anti-Mold Property and Mechanism Description of Ag/TiO2 Wood-Based Nanocomposites Formation by Ultrasound- and Vacuum-Impregnation" Nanomaterials 10, no. 4: 682. https://doi.org/10.3390/nano10040682

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