Application and value analysis of nanocellulose in pesticides and functional suspension systems

As pesticide formulations develop towards high efficiency, safety, environmental protection and high stability , traditional suspending agents and thickening systems are gradually exposed in terms of long-term storage stability, low-dose dispersion and environmental friendliness. Nanocellulose ( Nanocellulose ), as a new type of natural polymer nanomaterial, is becoming an important functional additive in pesticides and functional suspension systems due to its unique structure and performance advantages.

1. The core demand for functional materials in pesticide suspension systems

In suspension concentrates ( SC ), water-dispersible granules ( WDG ) and functional additive systems, formula design usually faces the following key issues:

Active ingredients are easy to settle and agglomerate

After long-term storage, the system delaminates and its stability decreases.

Rheological instability under shear conditions

Some traditional additives have a greater environmental burden

Therefore, pesticide preparations put forward multiple requirements for suspended materials such as efficient suspension, good dispersion, low addition amount and green environmental protection .

2. Structural characteristics and mechanism of action of nanocellulose

Nanocellulose is prepared by dissociation of natural cellulose. It has nanometer-scale fiber diameter and micron-scale length, and can form a stable three-dimensional network structure in an aqueous system. Its core mechanism of action in pesticide suspension systems is mainly reflected in the following aspects:

Physical network support effect
The spatial network constructed by nanocellulose in water can effectively limit particle movement and reduce the sedimentation rate of active ingredients.

Interfacial adsorption and collaborative dispersion
The rich hydroxyl structure on the surface can form adsorption with the surface of pesticide particles to enhance the uniformity of system dispersion.

Rheological properties control
maintains a high viscosity under low shear conditions, which is beneficial to storage stability; the viscosity decreases under high shear conditions, which is beneficial to pumping, dilution and spraying.

3. Specific application performance of nanocellulose in pesticide suspension agents

1. Improve suspension stability

The introduction of nanocellulose into the pesticide suspension system can significantly reduce the sedimentation volume ratio, delay the stratification phenomenon, and improve the long-term storage stability of the preparation.

2. Improve dispersion uniformity

Nanocellulose helps form a more uniform particle distribution, reduces agglomeration, and improves the utilization efficiency of active ingredients.

3. Optimize spraying performance

Good shear thinning characteristics make pesticides more evenly atomized during spraying and have more stable adhesion properties, helping to improve field application effects.

4. Compatible with a variety of formula systems

Nanocellulose can be used in conjunction with common dispersants, wetting agents and antifreeze systems. The formula is highly adaptable and easy for industrial application.

4. The expansion value of nanocellulose in functional suspension systems

In addition to traditional pesticide preparations, nanocellulose also shows good application potential in fertilizer suspensions, trace element preparations, biopesticides and functional additive systems:

Improve system stability and prevent solid-liquid separation

Improve low temperature storage performance

Reduce the dosage of synthetic polymer additives

In line with the development direction of green pesticides and sustainable agriculture

Its natural origin and degradable characteristics give it obvious advantages in future green agricultural material systems.

5. Application Prospects and Development Trends

As pesticide formulations evolve towards low toxicity, low dosage and high efficiency, the selection of functional additives will pay more attention to the balance between performance and environmental protection. Nanocellulose is expected to play a more important role in the new generation of pesticides and functional suspension systems due to its efficient suspension ability, excellent rheological control performance and natural environmental protection properties .

In the future, through surface modification and structural control, the adaptability and functionality of nanocellulose in different active ingredient systems will be further improved, providing more possibilities for upgrading pesticide formulation technology.