纳米纤维素晶须制备工艺条件优化及表征  

Optimization of Preparation Technology and Characterization of Nano-cellulose Whiskers

作　　者：王海英[1] 孟围[1] 刘志明[2] 谢成[2] 

机构地区：[1]东北林业大学林学院,黑龙江哈尔滨150040 [2]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：《广州化工》2012年第9期46-49,共4页GuangZhou Chemical Industry

基　　金：哈尔滨市科技局留学回国人员项目(No:RC2010LX002005);人力资源和社会保障部留学回国人员科技活动择优资助项目(No:07041311401);国家自然科学基金资助项目(No:31070633)

摘　　要：采用响应面法优化纳米纤维素晶须(NCW)制备工艺条件并利用傅里叶红外(FTIR)、X射线衍射(XRD)和透射电子显微镜(TEM)对NCW进行性能表征。结果表明NCW最优制备工艺条件为水解时间2.25 h,硫酸浓度54%,反应温度50℃,NCW得率为75.68%,与理论预测值74.18%较吻合;模型的决定系数为98.87%,说明模型拟合有效;制备的NCW聚集态和形貌为纤维素Ⅰ型,呈棒状。The preparation technological conditions of nano - cellulose whiskers （NCW） were optimized by response surface methodology and characterized with fourier transform infrared （FTIR）, X -ray diffraction （XRD） , and transmis- sion electron microscopy （TEM）. The results showed that optimization of NCW preparation technological conditions were 2.25 h of hydrolysis time, 54% sulfuric acid concentration, and 50 ~C of reaction temperature. Under optimization, NCW yield was 75.68%, which was identical with 74.18% of theoretical predicted values. Determination coefficient of model was 98.87% , which indicated that model fitting was effective. The state of aggregation and morphology of prepared NCW was cellulose type I and rodlike.

关 键 词：纳米纤维素晶须 响应面法 工艺优化 形貌 

分 类 号：TQ353[化学工程]