2024/7/9 8:58:01 CHENG Pengchao,SUN Yanning,LI Yao,LI Jigeng,WANG Xing,SUN Guangwei,ZHANG Xinyue 3true 3-polyethylene glycol 400-choline chloride was more efficient in lignin dissolution with the optimum process conditions for the moso bamboo lignin fractionation with temperature at 130 ℃， time for 3 h， mass ratio of 1∶15 and water addition of 10% （proportion of polyethylene glycol 400）. The dissolution rate was 96.13% under the optimum process conditions. The hydrogen bonding alkalinity of DES was increased significantly by coordinating FeCl₃ in binary DES system， leading to a high hydrogen bond-accepting capacity. Both Raman and FT-IR spectroscopy analysis indicated that the main lignin basis structural units in DES lignin were S-type and G-type. Moreover， the structural integrity of DES lignin was better than that of alkali lignin. The results can provide a reference for the efficient and clean fractionation of moso bamboo lignin by DES.]]> 2024/7/9 8:58:02 HE Jingpeng,ZHAO Deqing,ZHAO Yaling,ZHU Lei,WANG Qinjing,HE Yunjie,XU Xiucheng 2true 2024/7/9 8:58:04 LIU Yirun,WANG Xinhua,XU Huaiyu,JIN Yongcan,WU Wenjuan 1true