中文摘要：

采用响应面法优化桉木浆纳米纤维素（NCC）制备工艺条件并利用傅里叶变换红外（FTIR）、X射线衍射（XRD）、激光粒度分析法和透射电子娃微镜（TEM）观察法对NCC进行性能表征。结果表明NCC最优制备工艺条件为硫酸浓度55％，反应温度52℃，水解时间4h，NCC得率为65．80％，与响应而法预测值66．23％相接近：模型的决定系数为94．63％．说明模型拟合有效；制各的NCC为纤维素I型，平均粒径365．7nm，呈棒状。

英文摘要：

The preparation technological conditions of eucalyptus pulp nanocrystalline cellulose （NCC） were optimized by response surface methodology and characterized with fourier transform infrared （FTIR）, X-ray diffraction （XRD）, laser particle size analysis method and transmission electron microscopy （TEM） observation. The results show that optimization of NCC preparation technological conditions was 55 % sulfuric acid concentration, 52 ℃ of reaction temperature and 4 h of hydrolysis time. Under optimization, NCC yield was 65.80 %, which was closed to 66.23 % of response surface methodology predicted values. Determination coefficient of model is 94.63 %, it indicates that model fitting is effective. Prepared NCC is cellulose type I, average particle size of 365.7 nm and rod-like.