Enhancing moisture exclusion in wood through cell wall bulking via whey ultrafiltration permeate and citric acid modification
Résumé
Wood modification through polyesterification enhances its dimensional stability and reduces its moisture uptake. The efficacy of this modification depends on the placement of the polymeric networks within the wood. When these networks are situated within the cell wall, they cause cell wall bulking, thereby reducing the potential volume for moisture, which improves dimensional stability and water repellence capacity. The anti-swelling efficiency is typically calculated by comparing the dimensions of untreated and treated samples in both saturated and anhydrous states. The definition of the saturated state can influence the anti-swelling efficiency value. While it is established that polyesterification reduces wood moisture uptake, the kinetics of moisture absorption before and after modification have not been extensively studied. In this study, we demonstrate that the modification of four North American wood species with a mixture of whey ultrafiltration permeate and citric acid significantly enhances their physical properties as previously studied, as evidenced by increased anti-swelling efficiency. We also show that while wood modification deeply alters the kinetics of moisture uptake, it effectively reduces overall moisture absorption.
| Origine | Fichiers produits par l'(les) auteur(s) |
|---|---|
| Licence |