Study on Dissolving Rules of Nano Particles from E. camaldulensis Wood Flour

2009 Symposium on Photonics and Optoelectronics Pub Date : 2009-09-01 DOI:10.1109/SOPO.2009.5230180

W. Peng, Hong-chen Qi, Yi-qiang Wu, Z. Zhang, D. Zhang

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Abstract

Now Eucalyptus wood begins to be used to pulp. The leaching rule of nano particles from E.camaldulensis Wood has an important significance in the forestry research and paper making engineering. Therefore, based on the single-factor method, the fresh E. camaldulensis shavings were treated by LiOH in a concentration range of 0.5%~25% g/mL and the duration is 3, 16 and 24 hours respectively. The extraction mass was analyzed and the results were discussed. The filtrates were analyzed by ZETA and SIZER. The results were following as: (1)The extraction mass arrived at the maximum value when concentration is about 17.5%. (2)The micro/nano particles in the diameter of 531-1720 nm, 531-17200 nm, 164-531nm is the most at the extracting time of 3h, 16h, 24h, respectively (2) The diameter the micro/nano particles of wood extractives and hemicellulose is chiefly between 164-1720 nm according to number fraction. However, there are micro particles in the diameter of more than 1720nm when LiOH concentration is biger than 15%. The micro/nano particles in the diameter of 531-1720 nm, 531-1720 nm, 164-531 nm is the most at the extracting time of 3h, 16h, 24h, respectively.

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山竹木粉中纳米颗粒的溶解规律研究

现在桉树木材开始被用于制浆。杉木纳米颗粒的浸出规律在林业研究和造纸工程中具有重要意义。因此，在单因素法的基础上，用浓度为0.5%~25% g/mL的LiOH处理新鲜山梨树刨花，时间分别为3、16和24小时。对萃取质量进行了分析，并对结果进行了讨论。滤液采用ZETA和SIZER分析。结果表明:(1)萃取质量在浓度约为17.5%时达到最大值。(2)提取时间为3h、16h、24h时，微纳颗粒粒径分别为531 ~ 1720 nm、531 ~ 17200 nm、164 ~ 531nm。(2)木材提取物和半纤维素的微纳颗粒粒径按数量分数分布在164 ~ 1720 nm之间。但当LiOH浓度大于15%时，存在直径大于1720nm的微颗粒。提取时间分别为3h、16h、24h时，531 ~ 1720 nm、531 ~ 1720 nm、164 ~ 531 nm的微纳米颗粒最多。

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2009 Symposium on Photonics and Optoelectronics

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