Division of Bioresource, Paper and Coatings Technology, School of Industrial Technology, Universiti Sains Malaysia, 11800 Minden, Penang, Malaysia.
Division of Bioresource, Paper and Coatings Technology, School of Industrial Technology, Universiti Sains Malaysia, 11800 Minden, Penang, Malaysia.
Carbohydr Polym. 2015;127:202-8. doi: 10.1016/j.carbpol.2015.03.043. Epub 2015 Mar 30.
In this study cellulose nanocrystals were isolated from oil palm trunk (Elaeis guineensis) using acid hydrolysis method. The morphology and size of the nanocrystals were characterized using scanning electron microscopy and transmission electron microscopy. The results showed that the nanocrystals isolated from raw oil palm trunk (OPT) fibers and hot water treated OPT fibers had an average diameter of 7.67 nm and 7.97 nm and length of 397.03 nm and 361.70 nm, respectively. Fourier Transform Infrared spectroscopy indicated that lignin and hemicellulose contents decreased. It seems that lignin was completely removed from the samples during chemical treatment. Thermogravimetric analysis demonstrated that cellulose nanocrystals after acid hydrolysis had higher thermal stability compared to the raw and hot water treated OPT fibers. The X-ray diffraction analysis increased crystallinity of the samples due to chemical treatment. The crystalline nature of the isolated nanocrystals from raw and hot water treated OPT ranged from 68 to 70%.
在这项研究中，使用酸水解法从油棕树干（Elaeis guineensis）中分离出纤维素纳米晶。使用扫描电子显微镜和透射电子显微镜对纳米晶的形态和尺寸进行了表征。结果表明，从原油棕树干（OPT）纤维和热水处理的 OPT 纤维中分离出的纳米晶的平均直径分别为 7.67nm 和 7.97nm，长度分别为 397.03nm 和 361.70nm。傅里叶变换红外光谱表明木质素和半纤维素含量降低。似乎在化学处理过程中，木质素已从样品中完全去除。热重分析表明，与原 OPT 纤维和热水处理的 OPT 纤维相比，酸水解后的纤维素纳米晶具有更高的热稳定性。X 射线衍射分析由于化学处理而增加了样品的结晶度。从原 OPT 和热水处理的 OPT 中分离出的纳米晶的结晶度为 68%至 70%。
