芦苇浆纳米纤维素的制备工艺条件优化及形貌分析  

Preparation Optimization and Morphology Analysis of Nanocrystalline Cellulose from Reed Pulp

作　　者：刘志明[1] 谢成[1] 方桂珍[1] 卜良霄[1] 刘黎阳[1] 

机构地区：[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

出　　处：《林产化学与工业》2011年第6期87-90,共4页Chemistry and Industry of Forest Products

基　　金：国家自然科学基金资助项目(31070633);中央高校基本科研业务费专项资金资助(DL09CB08);哈尔滨市科技局留学回国人员项目(RC2010LX002005)

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。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.

关 键 词：芦苇浆 纳米纤维素 正交优化 形貌 

分 类 号：TQ351[化学工程] TQ352.79