Effect of ultrasound pretreatment on wood prior to vacuum drying


  • Zhengbin He
  • Zijian Zhao
  • Fei Yang
  • Songlin Yi


drying time, effective water diffusivity, ultrasound, wood vacuum drying


The influence of ultrasonic pretreatment prior to vacuum drying of Chinese fir specimens was examined in this work. In the pretreatments, wood samples were immerged in a distilled water bath and were treated using two wave frequencies for four different elapsed times to investigate effects of ultrasonic frequency and treatment duration. Then the wood samples were vacuum-dried at 80°C and absolute pressure of 0,05 MPa. After the pretreatment, microscopic analysis was carried out on the wood samples to check micro-cracks, the loss of extractives from the cell walls and other micro-structural changes on the wood. Results show that the ultrasonic treatment prior to vacuum drying significantly shortened the wood drying time. The drying time decreased with increase in the wave frequency and the treatment time. Furthermore, ultrasound pretreatment tended to reduce the content of extractives in the wood cell walls and cause cell-wall micro-cracking.


Download data is not yet available.

How to Cite

He, Z., Zhao, Z., Yang, F., & Yi, S. (2014). Effect of ultrasound pretreatment on wood prior to vacuum drying. Maderas. Ciencia Y Tecnología, 16(4), 395–402. Retrieved from https://revistas.ubiobio.cl/index.php/MCT/article/view/1175




Similar Articles

You may also start an advanced similarity search for this article.