Effects of ultrasonic pretreatment on physicochemical properties and drying behavior of Cunninghamia lanceolata and Eucalyptus grandis × urophylla.

ABSTRACT: Ultrasonic treatment offers promising potential for improving wood drying efficiency and permeability, yet its effects on the coordinated structural and drying responses of different species remain underexplored. This study assessed the impact of 1-5 h ultrasonic treatments (320 W, 40 kHz) on the physicochemical properties, pore structure, permeability, and drying behavior of Cunninghamia lanceolata and Eucalyptus grandis × urophylla. Results showed that ultrasonic pretreatment did not alter cellulose crystallinity type but reduced crystallinity and free hydroxyl content, while increasing mass loss, microfibril angle, and hygroscopic dimensional stability. With increasing treatment time, cell double wall thickness initially decreased and then stabilized, and Shore hardness declined across

SUBMITTER: Qian J 

PROVIDER: S-EPMC12504980 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature