- All
- Product Name
- Product Keyword
- Product Model
- Product Summary
- Product Description
- Multi Field Search
Views: 0 Author: Site Editor Publish Time: 2026-10-20 Origin: Site
In coatings, daily chemicals, food and agrochemical preparations, suspension stability is often a hidden indicator that determines the success or failure of the product. Pigment settling, frosted particles floating, and active ingredients unevenly distributed, these problems may affect the appearance at least, or cause product failure at worst. Traditional solutions rely on synthetic polymers or inorganic clay suspending agents, but the former faces biodegradation pressure, while the latter often has difficulty balancing transparency and stability. The emergence of nanocellulose provides a natural and performance-based solution to this contradiction. In this field, Nanjing Tianlu Nano Technology Co., Ltd. is based in Nanjing and focuses on the research and development, large-scale production and customized application solution output of nanocellulose series products, which is promoting this green material from the laboratory to industrial formulations.
To understand the suspension ability of nanocellulose , we need to break away from the traditional thinking of ' thickening means suspension ' . The core reason why nanocellulose can stabilize suspended particles lies in the three-dimensional network building ability endowed by its aspect ratio and surface chemistry.。
Cellulose nanofibrils ( CNFs ) typically have diameters ranging from 51 to 5010 nanometers and lengths of up to several micrometers. When these fibrils are dispersed in an aqueous phase, they spontaneously form a continuous nanonetwork through physical entanglement and hydrogen bonding. This network generates enough yield stress in a static state to hold up pigment particles, pearlescent flakes or active microcapsules, preventing them from settling or floating due to gravity. In other words, the support force of the suspension comes from the structural strength of the network skeleton, not simply the viscosity value.
At the same time, the surface of nanocellulose treated with TEMPO oxidation or carboxymethylation is negatively charged, and the electrostatic repulsion between particles cooperates with the steric hindrance of the fiber to further inhibit the agglomeration and phase separation of suspended particles. This dual mechanism of ' network support + electrostatic stabilization ' enables nanocellulose to achieve the suspension effect that traditional additives require higher dosages at a very low dosage.
Nanjing Tianlu Nanotechnology is proficient in TEMPO oxidation, carboxylation modification and other processes, and can stably supply CNF 、CNC and customized modified nanocellulose products, providing suitable raw material selection for different suspension systems.
Another test that the suspension system faces is the tension between standing stability and fluidity during use. A bottle of transparent shower gel needs to keep the pearlescent particles evenly suspended on the shelf for several months, but when consumers pour it, they expect the material to be smooth and smooth, rather than sticky and difficult to move. of nanocellulose networks The shear thinning and thixotropic recovery properties exactly respond to this need.
In the static state, the fiber network remains intact, the system exhibits a gel-like elastic response, and the storage modulus ( G' ) is greater than the loss modulus ( G'' ). When shear is applied - whether pouring, pumping or coating - the network structure temporarily dissociates and the viscosity drops rapidly, giving the system good fluidity. After the shear is removed, the hydrogen bonds and physical entanglements between the fibers are re-established in a short time, and the suspension ability is restored. This reversible ' destruction - reconstruction ' cycle eliminates the need to compromise between storage stability and user experience.
From the perspective of rheological indicators, the yield stress of a well-designed nanocellulose suspension system usually falls in the range of 10up to 50Pa, which is enough to lift particles down 1to 100microns, while the zero-shear viscosity can be adjusted in the range of hundreds to two thousand milliPa · s depending on the formulation requirements. This controllability provides formulation engineers with a clear design window.
The implementation of nanocellulose suspension performance is expanding from laboratory research to multiple industrial fields.
Daily chemicals and personal care are currently one of the fields with the fastest industrialization progress. In transparent shower gel, suspended shampoo, and scrub cleansing products, nanocellulose can stabilize functional components such as suspended pearlescent flakes, plant particles, and fragrance microcapsules while maintaining high light transmittance of the system. Compared with traditional synthetic suspending agents, its mild rheological characteristics will not cause a sticky and heavy skin feel, which is in line with the current market trend of pure cosmetics and green formulas.
Nanjing Tianlu Nanotechnology has optimized the suspension and rheological properties of daily chemical grade nanocellulose to address the pain points of the daily chemical industry, achieving long-term suspension with ultra-low addition amounts while maintaining a transparent texture of the system.
The coating and ink fields benefit from the anti-settling and anti-sag properties of nanocellulose. In water-based coatings, the nanocellulose network can effectively inhibit the settling and stratification of pigments during storage, while improving the leveling and splash resistance during construction. Experimental data shows that by adding to the pigment aqueous dispersion , 0.3% nanocellulose 30the daily sedimentation rate can be reduced from 85% without addition to less than 20% , while the system's light transmittance remains above 90% .
Tianlu Nano also has a targeted layout in modified nanocellulose for coatings, and can adapt the formula according to different coating systems.
Pesticides and pharmaceutical preparations have more stringent requirements for suspension stability. The uniform distribution of active ingredients in pesticide aqueous suspensions is directly related to the spraying effect and efficacy; suspension oral liquids require poorly soluble drug particles to remain dispersed during storage to avoid agglomeration affecting dosage accuracy. Nanocellulose's high efficiency at low dosages in these systems - typical dosages are only 0.1% to 0.5% by mass - make it a viable alternative to traditional suspension additives.
Translating the suspension mechanism of nanocellulose into stable industrial formulations still requires attention to several key variables at the engineering level.
Surface chemistry determines the charge density and dispersion state of the fiber network: CNF with a higher degree of TEMPO oxidation has a high surface carboxyl content and strong electrostatic stabilization, but excess electrolyte may shield the charge and cause flocculation; moderate modification can achieve a balance between stability and salt tolerance.
Drying and redispersibility is another practical obstacle: Nanocellulose is prone to irreversible aggregation during dehydration, resulting in an incomplete recovery of the network structure after redispersion.
For formulation engineers, the core indicator for evaluating the suspension effect of nanocellulose should not be limited to viscosity. The yield stress reflects the ability of the network to lift particles, the G'/G'' ratio indicates whether the gel state is formed, and the thixotropic recovery rate is related to the performance consistency of the product during filling and use. System design around these parameters is far more effective than simply pursuing high viscosity.
As a technology company established in 20242016 that focuses on the industrial application of nanocellulose, Nanjing Tianlu Nanotechnology has developed capabilities from R&D to large-scale supply of CNF 、CNC and bacterial cellulose series products, and provides customized solutions for different application scenarios such as daily chemicals, coatings, and papermaking. In the subdivision direction of suspension, its technological accumulation is gradually being transformed into formula support that can be implemented.
Conclusion
The value of nanocellulose in the field of suspension is not that it is ' stronger ' than traditional additives , but that it uses a renewable nanostructure to simultaneously respond to the multiple needs of stability, transparency, rheology control and sustainability. When the formulation space is increasingly narrowed by the performance boundaries of synthetic additives, such nanonetworks derived from plant fibers offer an alternative path that deserves to be taken seriously.
