Polyvinyl Alcohol (PVA) for Fertilizer | Controlled Release Binder & Coating Agent
What is PVA in Fertilizer?
Polyvinyl Alcohol (PVA) is a water-soluble polymer widely used in fertilizer manufacturing as a granulation binder, coating agent, and controlled-release modifier. It enhances fertilizer particle strength, reduces dust, and enables slow nutrient release.
Why Use PVA in Fertilizer Production?
- Improves granule strength and integrity
- Enables controlled nutrient release
- Reduces dust and material loss
- Enhances coating uniformity
- Biodegradable and environmentally friendly
Key Applications of PVA in Fertilizer Industry
1. Fertilizer Granulation Binder
PVA acts as a high-efficiency binder in NPK and compound fertilizer granulation.
Technical Advantages:
- Strong adhesion between particles
- Improved granule hardness
- Reduced breakage during transport
Recommended Grades:
2. Controlled Release Fertilizer Coating
PVA is used as a film-forming agent to create controlled-release coatings.
Benefits:
- Regulates nutrient release rate
- Improves fertilizer efficiency
- Reduces leaching and environmental impact
3. Dust Suppression & Anti-Caking Agent
PVA helps minimize dust and prevents caking during storage.
Key Effects:
- Cleaner production environment
- Improved handling safety
- Better storage stability
4. Water-Soluble Fertilizer Additive
PVA enhances dissolution performance and stability in liquid or soluble fertilizers.
Technical Specifications
| Parameter | Typical Value |
|---|---|
| Appearance | White Powder |
| Viscosity | 45 – 55 mPa.s |
| Degree of Hydrolysis | 87% – 99% |
| Moisture | ≤ 5% |
| Ash Content | ≤ 0.7% |
| Solubility | Fully water soluble |
How PVA Works in Fertilizer
PVA forms a hydrogen-bonded polymer network that:
- Binds fertilizer particles during granulation
- Forms a semi-permeable film layer
- Controls water penetration and nutrient diffusion rate
👉 Result: Higher nutrient utilization efficiency (NUE)
Recommended Formulation (Reference)
Granulation Binder Solution:
- PVA: 3–8% aqueous solution
- Spray during granulation process
Coating Application:
- PVA + additives (optional biodegradable polymers)
- Apply via drum coating or fluidized bed
Competitive Advantages
- Stable viscosity → consistent production performance
- Strong film-forming → better controlled release
- Factory direct → cost advantage
- Customizable grades → tailored for fertilizer process
Looking for High-Performance PVA for Fertilizer?
- Free sample available
- Technical formulation support
- Bulk supply with stable quality
👉 Contact us now to optimize your fertilizer performance.
Email: chris@innonew-material.com | WhatsApp: +86 17736063980