Abstract
Improving the dimensional stability of bamboo for construction and engineering use through furfurylation is crucial. Traditional methods like impregnation and soaking furfurylation are hindered by high modifier consumption and waste disposal issues. In this study, we propose a novel technique called solution quantitative adsorption furfurylation (SQAF) to enhance bamboo's dimensional stability and overcome these challenges. Our findings indicate that SQAF achieves enhanced dimensional stability (anti-swelling efficiency (ASE) up to 53.02 %) and reduced hygroscopicity (EMC down to 4.11 %) with approximately 12.50 % weight percentage gain (WPG), and a high furfuryl alcohol (FA) utilization efficiency (SR > 85 %). Analysis using SEM and nanoindentation reveals precise modification of the cell walls without FA resin accumulating in cell cavities. Additionally, SQAF allows for a graded distribution of FA resin, thereby improving the physical properties of bamboo while maintaining its mechanical integrity, especially as the decline in toughness of bamboo is reduced by more than 40 % compared to traditional methods.
Published Version
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