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Views: 0 Author: Site Editor Publish Time: 2025-07-21 Origin: Site
The suspension stability of nanocellulose is one of the important characteristics that has attracted much attention in the research and development of functional materials in recent years. As a renewable nanomaterial derived from natural cellulose, nanocellulose not only has the advantages of high strength, high specific surface area, good biocompatibility, etc., but its excellent suspension stability also makes it outstanding in water-based systems. It is widely used in many fields such as coatings, colloids, food, cosmetics and biomedical products.
This paper will analyze why nanocellulose has good suspension stability based on the structural characteristics, stability mechanism and practical application, and explain the importance of this advantage in industrial applications.
Suspension stability refers to the ability of nanomaterials to remain unsegregated or agglomerated after dispersing in liquid media. Nanocellulose has a network structure with nanoscale size and high dispersion. It can form a transparent or translucent uniform suspension in water or polar solutions, and can still maintain a good dispersion state after being left to stand for a period of time, demonstrating excellent stability.
High specific surface area : The diameter of nanocellulose is generally between 5 and 100 nanometers, and the length can reach several microns. It has a large specific surface area, which makes it have strong Brownian motion in the liquid, which helps maintain the dispersed state.
The surface hydroxyl structure is rich : the cellulose molecular chain is rich in hydroxyl groups, which can form a large amount of hydrogen bonds with water molecules, improving hydrophilicity and colloid stability.
Charge stability (such as TEMPO oxidized nanocellulose) : The functionally modified nanocellulose surface can carry a negative charge, which uses electrostatic repulsion to prevent particles from agglomeration and enhance dispersion stability.
Three-dimensional network structure : At higher concentrations, nanocellulose can build a spatial network to form a ' physical gel ' to further improve the uniformity and stability of the suspension system.
As a thickener and stabilizer nanocellulose in aqueous coatings,
it can improve the uniformity and storage stability of the coating, prevent pigment from settled, and impart higher sag resistance and flexibility to the coating film.
In food and beverages, as a stabilizing additive
as a natural source of food additives, nanocellulose can be used in flavored milk drinks and emulsification systems to effectively stabilize suspended particles and enhance taste and appearance.
As a transparent colloidal dispersed matrix in cosmetics
, nanocellulose can be used in products such as lotions and facial masks to enhance durability and skin feel, while improving product storage performance.
In medicine and biological materials
, the good suspension of nanocellulose makes it easier to mix evenly with drugs, cells, etc., ensuring the consistency and stable performance of the finished product 3D.
Nanjing Tianlu Nano Technology Co., Ltd. has been deeply engaged in the research and development and industrial production of nanocellulose materials. It has developed a variety of high-stability nanocellulose dispersion products for different application needs , which are widely used in environmentally friendly materials, functional colloids, water-based coatings and biomedical materials. it produces has the advantages of narrow particle size distribution, good dispersion and long-term stability. It has been verified by many companies and has achieved mass supply.The TEMPO oxidized nanocellulose colloid system
