Mechanochemical process, which involves simultaneous ultrasound and alkali treatment, has been used to isolate microcrystalline cellulose (MCC) from raw oil palm empty fruit bunch (REFB) fibre. Three steps have been used to prepare the MCC, namely removal of lignin, removal of hemicellulose and finally production of MCC. The crystallinity index in MCC is found to be 81% which is 54% higher than that of REFB and 45% higher than that of cellulose. Besides crystallinity, the crystal size (28.03Å) of MCC is also enhanced noticeably by 53% as compared to the REFB and 28% as compared to cellulose. The degradation temperature, and the residue content reveal the excellent thermal stability of MCC extracted through this mechanochemical technique.

中文翻译：

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机械化学法分离微晶纤维素的表征

机械化学过程涉及超声和碱的同时处理，已用于从未加工的油棕空果束（REFB）纤维中分离微晶纤维素（MCC）。已经使用了三个步骤来制备MCC，即去除木质素，去除半纤维素以及最后生产MCC。发现MCC中的结晶度指数为81％，比REFB的结晶度高54％，比纤维素的结晶度高45％。除了结晶度以外，MCC的晶体尺寸（28.03Å）也比REFB显着提高了53％，与纤维素相比则提高了28％。降解温度和残留物含量表明通过这种机械化学技术提取的MCC具有优异的热稳定性。