Description
Specifications Table
Product Name – Polyvinyl alcohol, 98-99% hydrolyzed, high molecular weight
Quantity/Pack Size – 25g, 100g, 500g
Form – Powder
Grade – Laboratory
Application – Polymer research, film formation, adhesives
Product Overview
Polyvinyl alcohol (PVA), 98-99% hydrolyzed with high molecular weight, is a synthetic polymer renowned for its exceptional water solubility, film-forming properties, and chemical stability. This premium-grade PVA is meticulously processed to ensure minimal residual acetate content, making it ideal for applications requiring high purity and consistent performance. Its high degree of hydrolysis enhances its adhesive strength, flexibility, and resistance to oils and solvents, while the elevated molecular weight contributes to superior mechanical properties in films and coatings. The powder form ensures easy dissolution in water, forming clear, stable solutions without gelation. As a non-toxic and biodegradable polymer, it offers an eco-friendly alternative for various industrial and laboratory processes. The controlled particle size distribution guarantees uniform dispersion, preventing clumping during preparation. Whether used as a thickening agent, emulsifier, or protective colloid, this PVA delivers reliable results with batch-to-batch consistency, meeting the stringent demands of advanced research and development applications.
FAQs
1. What is the difference between 98% and 99% hydrolyzed PVA?
The 1% difference in hydrolysis affects water solubility and film properties. 99% hydrolyzed PVA has slightly better water resistance and mechanical strength in films but may require higher temperatures to dissolve completely compared to 98% hydrolyzed.
2. Can this PVA be used for creating water-soluble films?
Yes, this high molecular weight PVA is specifically suitable for producing water-soluble films due to its excellent film-forming capabilities and controlled hydrolysis degree.
3. What is the recommended storage condition for this PVA?
Store in a cool, dry place in tightly sealed containers to prevent moisture absorption. Avoid exposure to direct sunlight or temperatures above 30°C.
4. Is this PVA compatible with other water-soluble polymers?
It generally shows good compatibility with polymers like polyethylene glycol and polyvinylpyrrolidone, but compatibility tests are recommended for specific applications.
5. What alternatives exist for applications requiring lower viscosity?
Lower molecular weight PVA grades or partially hydrolyzed PVA (87-89%) can be considered for applications where reduced viscosity is preferred.
