Direct production of lignin nanoparticles (LNPs) from wood using p-toluenesulfonic acid in an aqueous system at 80°C: characterization of LNP morphology, size, and surface charge
Author:
Ma Qianli12, Chen Liheng3, Wang Ruibin12, Yang Rendang1, Zhu J.Y.4
Affiliation:
1. State Key Laboratory of Pulp and Paper Engineering , South China University of Technology , Guangzhou , China 2. USDA Forest Service , Forest Products Laboratory , Madison, WI , USA 3. Key Laboratory of Biomaterials of Guangdong Higher Education Institute , Department of Biomedical Engineering , Jinan University , Guangzhou , China 4. USDA Forest Service , Forest Products Laboratory , Madison, WI , USA , Phone: +1-608 231 9520
Abstract
Abstract
Lignin nanoparticles (LNPs) from renewable lignocelluloses can be a valuable building block for a variety of applications and could contribute to the economic development in rural agricultural communities. Current technologies for producing LNPs are not cost effective and use toxic solvents. In this study, LNPs were produced by fractionating poplar wood at ≤80°C with a recyclable hydrotrope p-toluenesulfonic acid (p-TsOH) in an aqueous system. The dissolved lignin was separated as LNPs simply by diluting the spent liquor (SL) to the minimal hydrotrope concentration (HCmin) of 11.5%. The p-TsOH, a solid acid, can be easily recycled by re-concentrating the diluted SL after lignin separation. The LNP size, morphology, and surface charge were controlled by the dilution ratio, speed, pH, and ionic strength of the LNP sol. The LNPs were analyzed by dynamic light scattering (DLS) and found to be fairly stable in terms of mean particle size and surface charge over a period of 2 weeks. Fractionation conditions also affected LNP properties.
Publisher
Walter de Gruyter GmbH
Reference27 articles.
1. Ago, M., Huan, S., Borghei, M., Raula, J., Kauppinen, E.I., Rojas, O.J. (2016) High-throughput synthesis of lignin particles (~30 nm to ~2 μm) via aerosol flow reactor: size fractionation and utilization in pickering emulsions. ACS Appl. Mater. Interfaces 8:23302–23310. 2. Bian, H., Chen, L., Gleisner, R., Dai, H., Zhu, J.Y. (2017) Producing wood-based nanomaterials by rapid fractionation of wood at 80°C using a recyclable acid hydrotrope. Green Chem. 19:3370–3379. 3. Chen, L., Dou, J., Ma, Q., Li, N., Wu, R., Bian, H., Yelle, D.J., Vuorinen, T., Fu, S., Pan, X., Zhu, J.Y. (2017) Rapid and near-complete dissolution of wood lignin at ≤80°C by a recyclable acid hydrotrope. Sci. Adv. 3:e1701735. 4. Cheng, G., Kent, M.S., He, L., Varanasi, P., Dibble, D., Arora, R., Deng, K., Hong, K., Melnichenko, Y.B., Simmons, B.A., Singh, S. (2012) Effect of ionic liquid treatment on the structures of lignins in solutions: molecular subunits released from lignin. Langmuir 28:11850–11857. 5. Frangville, C., Rutkevičius, M., Richter, A.P., Velev, O.D., Stoyanov, S.D., Paunov, V.N. (2012) Fabrication of environmentally biodegradable lignin nanoparticles. ChemPhysChem 13:4235–4243.
Cited by
38 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献
|
|