Alcohol solvent effect on the self-assembly behaviors of lignin oligomers  

作　　者：Ya Ma Zhicheng Jiang Yafei Luo Xingjie Guo Xudong Liu Yiping Luo Bi Shi 

机构地区：[1]College of Biomass Science and Engineering,Sichuan University,Chengdu,610065,China [2]National Engineering Research Center of Clean Technology in Leather Industry,Sichuan University,Chengdu,610065,China [3]College of Pharmacy(International Academy of Targeted Therapeutics and Innovation),Chongqing University of Arts and Sciences,Chongqing,402160,China [4]State Key Laboratory of Utilization of Woody Oil Resource,Hunan Academy of Forestry,Changsha,410004,China [5]CAS Key Laboratory of Environmental and Applied Microbiology,Environmental Microbiology Key Laboratory of Sichuan Province,Chengdu Institute of Biology,Chinese Academy of Sciences,Chengdu,610041,China

出　　处：《Green Energy & Environment》2024年第4期597-603,共7页绿色能源与环境（英文版）

基　　金：supported by the National Natural Science Foundation of China(22078211);the China Postdoctoral Science Foundation(2022M721115).

摘　　要：The interactions between lignin oligomers and solvents determine the behaviors of lignin oligomers self-assembling into uniform lignin nanoparticles(LNPs).Herein,several alcohol solvents,which readily interact with the lignin oligomers,were adopted to study their effects during solvent shifting process for LNPs’production.The lignin oligomers with widely distributed molecular weight and abundant guaiacyl units were extracted from wood waste(mainly consists of pine wood),exerting outstanding self-assembly capability.Uniform and spherical LNPs were generated in H_(2)O-n-propanol cosolvent,whereas irregular LNPs were obtained in H_(2)O-methanol cosolvent.The unsatisfactory self-assembly performance of the lignin oligomers in H_(2)O-methanol cosolvent could be attributed to two aspects.On one hand,for the initial dissolution state,the distinguishing Hansen solubility parameter and polarity between methanol solvent and lignin oligomers resulted in the poor dispersion of the lignin oligomers.On the other hand,strong hydrogen bonds between methanol solvent and lignin oligomers during solvent shifting process,hindered the interactions among the lignin oligomers for self-assembly.

关 键 词：Lignin oligomers Alcohol solvent SELF-ASSEMBLY LNPs Solvent effects 

分 类 号：TQ413[化学工程]