Effect of KOH Eztraction on Micro/Nano Particles of Wood Eztractives and Hemicellulose Leaching from Chinese-fir Wood
In order to overcome the above-mentioned negative effects, the fresh Chinese-fir shavings were extracted in KOH soltion, 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 KOH concentration is about 17.5％. The micro/nano particles in Chinese-fir shavings would be discharged sufficiently in the KOH solution with the increaing of extracting time.(2) The diameter the micro/nano particles of wood extractives and hemicellulose is comparatively scattered according to volume fraction. Micro/nano particles in the diameter of 91.3-342 nm, 91.3-342 nm, 342-1720 nm 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 342nm and 6440 nm according to number fraction.Micro/nano particles in the diameter of 91.3-342nm, 91.3-342nm, 91.3-342nm is the most at the extracting time of 3h, 16h, 24h, respectively.
Chinese-fir nano particles leaching rule KOH micro particles
WU Yi-qiang PENG Wan-xi LI Song QIAO Jian-zheng
College of Materials Science and Engineering Central South University of Forestry and Technology Changsha,41004,P.R.China
国际会议
北京
英文
1-3
2009-06-11（万方平台首次上网日期，不代表论文的发表时间）