Breakthrough in Nanoparticle Technology: Researchers Achieve Dispersible Lignin Nanoparticles with Enhanced Colloidal Stability

Strategic Insights -

Researchers from Dalian Polytechnic University have made a significant discovery in the field of nanotechnology, developing a method to achieve dispersible lignin nanoparticles (LNPs) with enhanced colloidal stability. The study, funded by the National Natural Science Foundation of China (NSFC) and the LiaoNing Revitalization Talents Program, focused on the selective cleavage of aryl ether bonds in lignin and targeted esterification/modification of hydrophobic groups on aliphatic segments.

Using deep eutectic solvents (DES), the researchers were able to achieve selective cleavage of aryl ether bonds in lignin and targeted esterification/modification of hydrophobic groups on aliphatic segments. This allowed for the efficient assembly of stably dispersible lignin nanoparticles (LNPs). The study investigated the intrinsic link between the chemical structure of lignin depolymerization products and the colloidal stability of LNPs using veratrylglycerol-beta-guaiacyl ether (VG) as a lignin model compound.

The researchers successfully created lignin nanoparticles with a particle size of 93 nm and with an astonishingly low molecular weight of 2876 g/mol. The intrinsic link between the chemical structure of lignin depolymerization products and the colloidal stability of LNPs was systematically investigated, and it was found that LMW lignin forms NPs through internally driven self-assembly, providing a sustainable solution for the high-value utilization of lignin in the fine chemical industry.

Key Takeaways:

  • Researchers from Dalian Polytechnic University developed a method to achieve dispersible lignin nanoparticles (LNPs) with enhanced colloidal stability using deep eutectic solvents (DES).
  • The study used veratrylglycerol-beta-guaiacyl ether (VG) as a lignin model compound to investigate the intrinsic link between the chemical structure of lignin depolymerization products and the colloidal stability of LNPs.
  • The researchers successfully created lignin nanoparticles with a particle size of 93 nm and with an astonishingly low molecular weight of 2876 g/mol.
  • The study found that LMW lignin forms NPs through internally driven self-assembly, providing a sustainable solution for the high-value utilization of lignin in the fine chemical industry.
  • Funding for the research was provided by the National Natural Science Foundation of China (NSFC) and the LiaoNing Revitalization Talents Program.

Statistics:

  • 93 nm: particle size of the lignin nanoparticles created in the study.
  • 2876 g/mol: molecular weight of the lignin nanoparticles created in the study.
  • 2025: year in which the research was conducted.
  • 522: issue number of the Chemical Engineering Journal in which the research was published.

Sources:

  • NewsRx. New Findings in Nanoparticles Described from Dalian Polytechnic University [Biological Acid Hydrogen Bond Donors Regulate the Acceleration of Lignin Depolymerization and Enhance the Robustness of Lignin Nanoparticles (Lnps)]. Journal of Engineering. October 20, 2025; p 2230.
  • Biological Acid Hydrogen Bond Donors Regulate the Acceleration of Lignin Depolymerization and Enhance the Robustness of Lignin Nanoparticles (Lnps). Chemical Engineering Journal, 2025;522.
  • Elsevier Science Sa, PO Box 564, 1001 Lausanne, Switzerland. (Elsevier - www.elsevier.com; Chemical Engineering Journal - www.journals.elsevier.com/chemical-engineering-journal/)