Sustainable production of lignin micro-/nano-particles (LMNPs) from biomass: Influence of the type of biomass on their self-assembly capability and physicochemical properties

JOURNAL OF HAZARDOUS MATERIALS

卷:403

Article

Jiang, Zhicheng^1,2  Ma, Ya¹  Guo, Xingjie¹  Remon, Javier³  Tsang, Daniel C. W.⁴  Hu, Changwei⁵  Shi, Bi¹ 

[1] Sichuan Univ, Dept Biomass Sci & Engn, Chengdu 610065, Peoples R China

[2] Sichuan Univ, Natl Engn Res Ctr Clean Technol Leather Ind, Chengdu 610065, Peoples R China

[3] CSIC, Inst Carboquim, Zaragoza 50018, Spain

[4] Hong Kong Polytech Univ, Dept Civil & Environm Engn, Kowloon, Hung Hom, Hong Kong, Peoples R China

[5] Sichuan Univ, Coll Chem, Minist Educ, Key Lab Green Chem & Technol, Chengdu 610064, Peoples R China

关键词: Nanoparticle synthesis;    Aromatic biopolymer;    Lignin biorefinery;    Biomass valorization;    Sustainable waste management;   

DOI  :  10.1016/j.jhazmat.2020.123701

来源: Elsevier

【 摘 要 】

The production of lignin micro-/nano-particles (LMNPs) has gained growing interest due to their eco-friendly feature and biological compatibility with negligible hazardous impacts. Herein, this work carefully addresses the preparation of LMNPs from different types of biomass, including pine wood, birch wood, pubescens, vinasse, corncob and corncob residue. Firstly, ligno-oligomers were produced from each biomass through a H2O-THF co solvent system. Then, LMNPs were generated from these effluents. Uniform and spherical LMNPs, consisting of benzene ring-stacked cores and hydrophilic shells, were obtained only from the liquids yielded by the treatment of the corncob residue and pine wood. The characterization of the ligno-oligomers and the LMNPs revealed that the molecular weights of the ligno-oligomers did not exert a significant effect on their self-assembly capability. The presence of guaiacyl units connected by beta-O-4 and beta-beta linkages was beneficial for the pi-pi stacking of the benzene rings into compact cores, while the existence of beta-5 linkages and C alpha-oxidized side-chains exerted a negative effect. Stable and spherical LMNPs with an appropriate negative zeta potential and a relatively high thermal stability were obtained from the corncob residue and pine wood, which can serve as functional materials in various application areas.

【 授权许可】

Free