@Article{jrm.2023.026656,
AUTHOR = {Xiaoqian Bi, Pengfei Guan, Ping Li, Yuan Zhang, Xingong Li, Yingfeng Zuo},
TITLE = {Selecting the Technology of Sodium Silicate Modified Poplar with the Highest Performance by Fuzzy Orthogonal Method},
JOURNAL = {Journal of Renewable Materials},
VOLUME = {11},
YEAR = {2023},
NUMBER = {5},
PAGES = {2399--2415},
URL = {http://www.techscience.com/jrm/v11n5/51699},
ISSN = {2164-6341},
ABSTRACT = {Sodium silicate modification can improve the overall performance of wood. The modification process has a great
influence on the properties of modified wood. In this study, a new method was introduced to analyze the wood
modification process, and the properties of modified wood were studied. Poplar wood was modified with sodium
silicate by vacuum-pressure impregnation. After screening using single-factor experiments, an orthogonal experiment was carried out with solution concentration, impregnation time, impregnation pressure, and the cycle times
as experimental factors. The modified poplar with the best properties was selected by fuzzy mathematics and
characterized by SEM, FT-IR, XRD and TG. The results showed that some lignin and hemicellulose were removed
from the wood due to the alkaline action of sodium silicate, and the orderly crystal area of poplar became disorderly, resulting in the reduction of crystallinity of the modified poplar wood. FT-IR analysis showed that
sodium silicate was hydrolyzed to form polysilicic acid in wood, and structural analysis revealed the formation
of Si-O-Si and Si-O-C, indicating that sodium silicate reacted with fibers on the wood cell wall. TG-DTG curves
showed that the final residual mass of modified poplar wood increased from 25% to 67%, and the temperature of
the maximum loss rate decreased from 343°C to 276°C. The heat release and smoke release of modified poplar
wood decreased obviously. This kind of material with high strength and fire resistance can be used in the outdoor
building and indoor furniture.},
DOI = {10.32604/jrm.2023.026656}
}