7 kJ/kg， and those of its DES pretreated counterparts were 1.61×10⁷~2.11×10⁷ kJ/kg， reducing 77.8%~83.0%. DES pretreatment improved the stability of CNF suspension but impaired its thermal stability. The increase in DES pretreatment time promoted the fibrillation of fibers but reduced the polymerization degree of fibers.]]> 2023/6/20 0:00:00 MA Guangrui,ZHANG Zhiguo,YANG Guihua,CHEN Jiachuan,HE Ming 3true α-cellulose content was 49.62%. The crystal structure of reed cellulose did not change after pre-hydrolysis treatment， i.e.， the type Ⅰ structure was maintained. The feasible process conditions for preparing CNF from pre-hydrolyzed reed treated by F-DES system were as follows： FeCl₃·6H₂O dosage of 0.2 mmol/g DES， mass ratio of Oxd/ChCl 4∶1， reaction time 6 h， and temperature 80 ℃. The as-prepared CNF had homogeneous morphology and particle size ranging from 200 to 800 nm， with 90% of them distributed between 300 and 400 nm.]]> 2023/6/20 0:00:00 LIU Tianci,YANG Qian,SONG Jiahui,SUN Haidong,SHI Haiqiang 2true p-toluenesulfonic acid hydrolysis and high-pressure homogenization method. The law of lignin removal during p-toluenesulfonic acid hydrolysis and the effect of residual lignin on the microscopic morphology， size， crystal structure， and thermostability of LCNF were studied. The results showed that p-toluenesulfonic acid hydrolysis effectively removed lignin and weakened the binding force between fibers， which was beneficial for dissociating and dispersing microfibrils in the high-pressure homogenization process. Compared with the raw material， the amorphous region of LCNF was destroyed and the crystallinity increased from 43.9% to 66.0%. The residual lignin content could be regulated by acid hydrolysis， and the average width of LCNF after high-pressure homogenization could be further controlled， achieving preparation of multiscale LCNF. The lower the lignin content in LCNF， the better the dispersion performance of LCNF and the more uniform the size. When the residual lignin content was 4.89%， the average width of LCNF reached the minimum of 10.6 nm， and the maximum thermogravimetric degradation temperature （T_max） was between 350~360 ℃.]]> 2023/6/20 0:00:00 DONG Maolin,SU Wenhao,SHU Xuan,JIANG Bo,DAI Hongqi,JI Xingxiang,BIAN Huiyang 1true