Lignin nanoparticles with uniform particle size, and preparation method and application thereof
By controlling the salt solution concentration during the lignin self-assembly process, the charge of lignin can be selectively masked, and nanoparticles with uniform particle size can be prepared. This solves the problem of uneven size of lignin nanoparticles in the existing technology and realizes simple and efficient preparation and application.
CN122127631APending Publication Date: 2026-06-02GUANGDONG UNIV OF TECH
Patent Information
- Authority / Receiving Office
- CN Β· China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- GUANGDONG UNIV OF TECH
- Filing Date
- 2026-04-14
- Publication Date
- 2026-06-02
AI Technical Summary
Technical Problem
Existing technologies make it difficult to prepare lignin nanoparticles with uniform particle size using simple and low-cost methods, resulting in their application performance being far below expectations.
Method used
By controlling the ionization properties of lignin active groups during self-assembly, selectively shielding lignin charges, and utilizing inorganic salt solutions to regulate the electrostatic repulsion between lignin molecules, nanoparticles with uniform particle size can be prepared.
Benefits of technology
This method improves the particle size uniformity of lignin nanoparticles, simplifies the preparation process, reduces operational complexity and cost, and makes them suitable for industrial production.
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Figure CN122127631A_ABST
Abstract
This invention discloses a method for preparing lignin nanoparticles with uniform particle size and its applications. The method involves fully dissolving industrial lignin in an aqueous solution of inorganic salts in acetone, filtering, and then adding an aqueous solution of inorganic salts of the same concentration to complete self-assembly, resulting in a dispersion of lignin nanoparticles with uniform particle size. Centrifugation yields the lignin nanoparticles with uniform particle size. This invention provides a simple, easily controllable, and highly reproducible nanoparticle preparation method. Furthermore, compared to mechanical methods, interfacial crosslinking, and emulsion methods for preparing lignin nanoparticles, it offers advantages such as significantly shortened process flow and reduced costs, demonstrating potential for large-scale industrial production.
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