Selecting the correct grade of Polyvinyl Alcohol (PVA) is critical for achieving optimal performance in various industrial and specialized applications. At NINGBO INNO PHARMCHEM CO.,LTD., we provide a range of high-quality polyvinyl alcohol products, each tailored to specific requirements. Understanding the key specifications will help you make an informed choice when you need to buy polyvinyl alcohol.

The primary specifications that differentiate PVA grades are molecular weight and the degree of hydrolysis. Molecular weight influences viscosity, film strength, and solubility. Higher molecular weight PVA generally results in higher viscosity and stronger films. The degree of hydrolysis, which refers to the percentage of acetate groups removed from the polyvinyl acetate precursor, significantly impacts water solubility and adhesive properties. Partially hydrolyzed PVA (typically 87-89% hydrolysis) offers a balance of water solubility and film strength, making it suitable for many adhesive and textile applications. Fully hydrolyzed PVA (99-100% hydrolysis) is more water-soluble and forms more crystalline films, often preferred for applications requiring enhanced water resistance once formed.

When sourcing PVA, it's essential to consider the intended use. For example, applications in papermaking or adhesives often benefit from partially hydrolyzed grades due to their excellent adhesion and film-forming properties. In contrast, pharmaceutical and cosmetic applications might require specific grades with very high purity and controlled hydrolysis levels to ensure safety and efficacy. The ability to find high-quality polyvinyl alcohol that matches these precise specifications is paramount for product success.

NINGBO INNO PHARMCHEM CO.,LTD. offers a comprehensive selection of PVA products, each clearly defined by its specifications. Our technical team can assist you in identifying the most suitable grade for your specific needs, whether for warp sizing, paper coatings, adhesives, or other advanced uses. Partnering with a reliable supplier like us ensures you receive consistent quality polyvinyl alcohol powder, essential for maintaining the integrity and performance of your end products.