Study on Leaching Mechanism of Micro/Nano Particles from Cunninghamia lanceolata Wood in NaOH Liquor
In order to overcome the above-mentioned negative effects, the extractives of the fresh Cunninghamia lanceolata shavings, which were obtained by using both the sorbitic-extracting approaches, were analyzed by ZETA and SIZER to find out the leaching rule of nano particles in Chinese-fir wood. The results are as follows: (1) The extraction mass arrived at the maximum value when NaOH concentration is about 18.5. The micro/nano particles in Cunninghamia lanceolata shavings would be discharged sufficiently in the NaOH solution with the increaing of extracting time.(2) The diameter the micro/nano particles of wood extractives and hemicellulose is chiefly between 24.4-1720 nm according to volume fraction when NaOH concentration is ≤10％. And the diameter the micro/nano particles of wood extractives and hemicellulose is chiefly between <342 nm according to volume fraction when NaOH concentration is ≤10％. Micro/nano particles in the diameter of 24.4-91.3 nm, 342-1720 nm, 0-24.4nm is the most at the extracting time of 3h, 16h, 24h, respectively.(3)The diameter the micro/nano particles of wood extractives and hemicellulose is chiefly between 24.4-1720 nm according to number fraction.Micro/nano particles in the diameter of 91.3-342nm, 91.3-342nm, 91.3-1720nm is the most at the extracting time of 3h, 16h, 24h, respectively.
Cunninghamia lanceolata Nano Particles Leaching Rule NaOH Micro particles
PENG Wan-xi WU Yi-qiang ZHANG Zhong-feng Qi Hong-chen ZHANG Ming-long
School of Materials Science and Engineering Central South University of Forestry and Technology City Changsha,P.R.China
国际会议
北京
英文
1-4
2009-06-11（万方平台首次上网日期，不代表论文的发表时间）