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Leachability and Anti-Mold Efficiency of Nanosilver on Poplar Wood Surface

Authors :
Xiaohan Dai
Yanran Qi
Hongxue Luo
Zaixin He
Lianxiang Wei
Xiaoying Dong
Xingxia Ma
De-Quan Yang
Yongfeng Li
Source :
Polymers, Vol 14, Iss 5, p 884 (2022)
Publication Year :
2022
Publisher :
MDPI AG, 2022.

Abstract

Water-based antimicrobial agents, used in environmentally friendly applications, are widely used in wood protection industries. Furthermore, nanomaterials as antimicrobial agents, because of their biocidal component, huge specific surface area, and unique nanoscale effect, have attracted attention in the field of biodurability. We employed aqueous dispersed nano-silver with a diameter of 10 nm~20 nm to treat poplar wood and evaluated its leaching resistance and anti-mold effect on the wood surface. The results revealed that the higher the retention of the nano-silver, the stronger the protection efficiency of the wood surface against three molds (Aspergillus niger V. Tiegh, Penicillium citrinum Thom, and Trichoderma viride Pers. ex Fr); and the leachability of the nano-silver presented a slowly growing trend with the increase in the retention. When the wood surface attained a silver retention of 0.324 g·m−2, its anti-mold efficiency against Aspergillus niger V. Tiegh, Penicillium citrinum Thom, and Trichoderma viride Pers. ex Fr reached 80, 75, and 80%, respectively, which achieved or even exceeded the required standard value of effective mold inhibition (75%). Notably, the nano-silver leaching rate at this retention attained merely 4.75 %. The nanoparticle, well distributed on a wood surface, may promote sufficient contact with fungi as well as strong interaction with wood cell wall components, which probably contributed to the effective anti-mold efficiency and the leaching resistance. This study provided positive evidence for the anti-mold effect of nano-silver on wood surface.

Details

Language :
English
ISSN :
20734360
Volume :
14
Issue :
5
Database :
Directory of Open Access Journals
Journal :
Polymers
Publication Type :
Academic Journal
Accession number :
edsdoj.74047fae1b04b54981540691f14e313
Document Type :
article
Full Text :
https://doi.org/10.3390/polym14050884