Complete Guide to Polyvinyl Alcohol (PVA) Selection

Polyvinyl Alcohol (PVA), also known as PVOH, is a versatile water-soluble synthetic polymer used extensively across the construction, textile, and adhesive industries. At RawChemicalMart, we provide consistent, high-purity PVA grades that meet rigorous industrial standards.

Understanding PVA Grades: The "88" vs. "99" Series

Choosing the right PVA depends primarily on two factors: Degree of Hydrolysis (Alcoholysis) and Viscosité.

1. Partially Hydrolyzed Grades (The "88" Series)

These grades typically have a hydrolysis degree of 86.0% – 90.0%. They are known for excellent cold-water solubility, flexibility, and strong adhesion to hydrophobic surfaces.

• PVA 05-88 (Low Viscosity): Used for fine textile sizing and high-flow coatings.
• PVA 17-88 & 20-88 (Medium Viscosity): The industry standard for putty powder, mortar additives, and general adhesives.
• PVA 24-88 & 26-88 (High Viscosity): Offers superior thickening and bonding strength, ideal for heavy-duty construction glues and PVC suspension polymerization.

2. Fully Hydrolyzed Grades (The "99" Series)

These grades have a hydrolysis degree of 98.0% – 100%. They offer maximum water resistance, tensile strength, and solvent resistance but require hot water (90°C+) to dissolve.

• PVA 17-99 (Medium Viscosity): Widely used in textile warp sizing and paper processing.
• PVA 26-99 (Ultra-High Viscosity): The strongest binder for ceramic manufacturing, paper tubes, and high-strength construction adhesives.

Key Industrial Applications

Industrie	Recommended Grades	Function
Construction	17-88, 24-88, 26-99	Improves water retention and flexibility in dry-mix mortars and tile adhesives.
Adhesives	17-88, 24-88, 20-88	Primary binder for white glue, wood glue, and office pastes.
Textiles	05-88, 17-99	Warp sizing agent for spun yarn and filament; provides a protective coating.
Paper	05-99, 17-99	Surface sizing to improve strength, printability, and oil resistance.

Why Source from RawChemicalMart?

We are more than just a supplier; we are your technical partner. Our PVA products are manufactured with precise control over polymerization and hydrolysis, ensuring batch-to-batch consistency.

• Direct Factory Sourcing: Competitive pricing without the middleman markup.
• Global Logistics: Reliable shipping to ports worldwide with proper chemical handling.
• Technical Support: Access to detailed TDS (Technical Data Sheets) and formulation advice.

Ready to place an order? Contact our sales team today for a quote on full container loads (FCL) or pallet quantities.