Microemulsion (ME) Formulation
Advanced Microemulsion: Transparency, Stability, and Optimized Delivery
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Microemulsion (ME) Formulation
Is a clear, thermodynamically stable liquid system where oil and water phases are finely dispersed using surfactants and co-surfactants. Unlike traditional emulsions, ME droplets are typically <100 nm, making them transparent and highly efficient for agrochemical delivery.
Key Features of ME Formulations:
Transparent appearance due to ultra-small droplet size
Thermodynamic stability: No phase separation over time
Low viscosity: Easy to handle and mix
Enhanced bioavailability: Better penetration and distribution on plant surfaces
Advantages:
Requires lower doses of active ingredient for same efficacy
Environmentally friendly: Often water-based with minimal solvents
Ideal for home & garden, wood preservation, and low-dose applications
Compatible with sensitive actives that degrade in traditional EC or EW formats
Typical Components:
| Component | Function |
|---|---|
| Active ingredient | Liquid or dissolved pesticidal agent |
| Surfactants & co-surfactants | Reduce interfacial tension and stabilize droplets |
| Water phase | Continuous phase for dispersion |
| Oil phase | May contain active or solvent |
| Cosolvents (e.g. alcohols) | Aid in phase inversion and droplet control |
ME formulations are often developed using phase inversion techniques, where a water-in-oil system is gradually converted to oil-in-water under controlled shear and temperature. Their optical clarity, low toxicity, and high performance make them a cutting-edge choice in modern agrochemical design.