Polyvinyl Alcohol (CAS No: 9002-89-5), commonly referred to as PVA, is a versatile, water-soluble synthetic polymer produced through the hydrolysis of polyvinyl acetate. Physically, it typically appears as an odorless, white to cream-colored granular powder or translucent film, characterized by exceptional tensile strength, flexibility, and superior oxygen barrier properties. Its solubility and chemical resistance are highly tunable, governed by the specific degree of polymerization and hydrolysis. Industrially, PVA is indispensable; it is widely utilized in textile sizing, paper coatings to improve grease resistance, and as a high-performance adhesive in woodworking and packaging. Furthermore, its biocompatibility makes it a preferred material for medical applications and water-soluble films. From a safety perspective, PVA is generally classified as non-toxic, non-carcinogenic, and biodegradable, posing minimal environmental risk. However, standard industrial hygiene practices are recommended to prevent dust inhalation and eye irritation during bulk handling and processing.
* Forms excellent, strong, and durable films.
* Provides strong adhesive properties for diverse materials.
* Offers high resistance to oils, greases, and organic solvents.
* Functions effectively as an emulsifying and dispersing agent.
* Enhances cohesion, adhesion, and flexibility in construction applications.
* Improves strength, printability, and surface properties of paper and textiles.
* Highly versatile, ideal for a wide range of industrial uses.
* Water-soluble, simplifying processing and cleanup.
* **Grade:** K-17
* **Appearance:** White Granule or Powder
* **PVA Content (wt%):** ≥93
* **Degree of Hydrolysis (mol%):** 87.0-89.0
* **Viscosity (mPa.s):** 17.0-22.0 (4% sol, 20℃)
* **Volatile Content (wt%):** ≤5.0
* **pH Value:** 5.0-7.0 (4% sol, 20℃)
* **Ash Content (wt%) (as Na2O):** ≤0.5
* **Saponification Value (mgKOH/g):** 135-155
* **Particle Size (wt%) (Passing 80 Mesh):** ≥98
* Used in **textile sizing** to strengthen yarns, reducing breakage during weaving processes.
* Functions as a primary component in various **adhesives and glues**, offering strong bonding capabilities.
* Applied in the **paper industry** for coating and sizing to enhance paper strength and printability.
* Serves as an additive in **cement and mortar** within the construction sector, improving workability and adhesion.
* Acts as a **protective colloid** in emulsion polymerization, stabilizing polymer particles during synthesis.
* Incorporated into **paints and coatings** to improve adhesion, film formation, and overall durability.
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