Polyvinyl Alcohol (PVOH) for Fertilizer Applications
What is PVOH in Fertilizer Industry?
Polyvinyl Alcohol (PVOH) is a water-soluble polymer widely used in the fertilizer industry as a binder, film-forming agent, and controlled-release coating material.
In modern agriculture, PVOH plays a critical role in improving:
- Granule strength
- Nutrient release control
- Environmental sustainability
Key Applications of PVOH in Fertilizers
1. Binder for Fertilizer Granulation
PVOH acts as a high-performance binder in NPK and compound fertilizers.
✅ Benefits:
- Improves granule strength
- Reduces breakage during transport
- Enhances production efficiency
2. Controlled-Release Fertilizer Coating
PVOH forms a uniform biodegradable film on fertilizer particles.
✅ Advantages:
- Controls nutrient release rate
- Reduces nutrient loss (leaching & volatilization)
- Improves fertilizer utilization efficiency
3. Anti-Dusting Agent
PVOH significantly reduces dust formation in fertilizer handling.
✅ Effects:
- Safer working environment
- Lower material loss
- Improved product appearance
4. Water-Soluble Fertilizer Packaging Film
PVOH is used in water-soluble fertilizer bags/films.
✅ Features:
- Fully dissolves in water
- No residue
- Ideal for precision agriculture
Recommended PVOH Grades for Fertilizer
Granulation Binder (compound/NPK/urea granulation):
- Primary choice: PVA 1788 (balance of solubility, binding strength, cost)
- Large / high-strength granules: PVA 2488
Slow-Release Coating (urea, NPK):
- Standard release (2–4 months): PVA 1788 / 2488 (blend with starch/boron for release control)
- Extended release (4–6+ months): PVA 1799 / 2499 (fully hydrolyzed) or modified PVOH
Critical Performance Properties for Fertilizer
- Degree of Hydrolysis: 87–89% (partially hydrolyzed) = cold-water soluble (<40°C), flexible film, adjustable nutrient release; 98–99% (fully) = hot-water needed, rigid film, slower release, higher strength
- Viscosity: Lower viscosity = faster dissolution, thinner coating; higher = stronger binding, thicker film, slower release
- Purity: Low ash (<0.5–1.0%), low volatile, low acetate residue → avoids fertilizer contamination, ensures soil compatibility
Why Choose PVOH for Fertilizer?
✔ Environmentally Friendly
- Biodegradable polymer
- Reduces chemical pollution
✔ Cost-Effective Solution
- Low dosage required
- High performance-to-cost ratio
✔ Improved Fertilizer Efficiency
- Controlled nutrient release
- Higher crop yield potential
Our Advantages – Hebei InnoNew Material
As a professional manufacturer of Polyvinyl Alcohol (PVOH), we provide:
- Stable quality with strict QC
- OEM & customized grades
- Fast global delivery
- Technical support for fertilizer formulation
Main export markets:
- Southeast Asia (Vietnam, Thailand, Indonesia)
- India
- Turkey
- Brazil
- Europe
Technical Support
We support:
- Formulation optimization
- Granulation process guidance
- Coating solution development
FAQ – PVOH in Fertilizer
1. Is PVOH suitable for controlled-release fertilizers?
Yes, PVOH is widely used as a coating material to regulate nutrient release rates.
2. Can PVOH improve fertilizer granule strength?
Absolutely. It acts as an excellent binder, significantly improving granule hardness.
3. Is PVOH biodegradable?
Yes, PVOH is environmentally friendly and biodegradable, suitable for sustainable agriculture.
4. What is the dosage of PVOH in fertilizer?
Typically 0.3%–1.0%, depending on formulation and process.
5. Which PVOH grade is best for fertilizer?
It depends on application:
- Binder → 1788
- Coating → 1799
- General → 2488
Call To Action
Looking for high-quality PVOH for fertilizer applications?
👉 Contact us now for:
- Free samples
- Technical consultation
- Best factory price
WhatsApp: +86 17736063980 | Email: chris@innonew-material.com