欢迎访问《林产化学与工业》,

林产化学与工业 ›› 2011, Vol. 31 ›› Issue (6): 87-90.

• 研究报告 • 上一篇    下一篇

芦苇浆纳米纤维素的制备工艺条件优化及形貌分析

刘志明, 谢成, 方桂珍, 卜良霄, 刘黎阳   

  1. 东北林业大学 材料科学与工程学院; 生物质材料科学与技术 教育部重点实验室, 黑龙江 哈尔滨 150040
  • 收稿日期:2011-03-07 修回日期:1900-01-01 出版日期:2011-12-30 发布日期:2011-12-30

Preparation Optimization and Morphology Analysis of Nanocrystalline Cellulose from Reed Pulp

LIU Zhi-ming, XIE Cheng, FANG Gui-zhen, BU Liang-xiao, LIU Li-yang   

  1. Key Laboratory of Bio-based Material Science and Technology of Ministry of Education;College of Material Science and Engineering,Northeast Forestry University, Harbin 150040, China
  • Received:2011-03-07 Revised:1900-01-01 Online:2011-12-30 Published:2011-12-30

摘要: 采用硫酸水解芦苇浆制备纳米纤维素,并用正交试验优化了工艺参数,分析了硫酸质量分数、反应温度和水解时间对芦苇浆制备纳米纤维素得率的影响。用透射电镜表征了芦苇浆制备的纳米纤维素的形貌。结果表明硫酸水解芦苇浆制备纳米纤维素的3个工艺参数对其得率的影响为硫酸质量分数的影响最大, 反应温度的影响次之,而水解时间的影响较小;硫酸水解芦苇浆制备纳米纤维素的优化工艺条件为硫酸质量分数 52 %,反应温度 47 ℃,水解时间4 h,此条件下纳米纤维素得率最高(82.81 %)。芦苇浆制备的纳米纤维素经透射电镜观察呈棒状,纤维素长度达到纳米级。

关键词: 芦苇浆, 纳米纤维素, 正交优化, 形貌

Abstract: Nanocrystalline cellulose (NCC) was prepared from reed pulp with sulfuric acid hydrolysis, and the technological parameters were optimized by conducting orthogonal test. The effects of sulfuric acid mass fraction, reaction temperature and hydrolysis time on the yield of NCC were studied. The morphology of NCC was characterized by transmission electron microscopy (TEM). The results show that the sulfuric acid mass fraction has the strongest effect on the yield of NCC, reaction temperature is the second, and the hydrolysis time has a weak influence on the yield among the three paprameters. The optimizing condition is sulfuric acid mass fraction 52 %, reaction temperature 47 ℃ and hydrolysis time 4 h for NCC preparation from reed pulp with sulfuric acid hydrolysis. The yield of NCC is the highest (82.81 %) under the optimized condition. The morphology of NCC from reed pulp appeares rod-like, and the lengths of NCC reach up to nanometer grade under TEM.

Key words: reed pulp, nanocrystalline cellulose, orthogonal optimization, morphology

中图分类号: