Poly(vinyl alcohol)
[CAS# 9002-89-5]

Identification

• Classification: API >> Hormone and endocrine-regulating drugs >> Birth control pills
• Name: Poly(vinyl alcohol)
• Synonyms: PVA
• Molecular Formula: (C₂H₄O)_n
• CAS Registry Number: 9002-89-5
• EC Number: 680-790-7

Properties

• Density: 1.30
• Melting point: 230-240 °C
• Flash point: 79 °C
• Water solubility: soluble in hot water

Safety Data

• Hazard Symbols: GHS07 Warning
• Risk Statements: H302-H315-H319-H335
• Safety Statements: P261-P280-P301+P312-P302+P352-P305+P351+P338

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Carcinogenicity	Carc.	2	H351

Discovery and Applications

Polyvinyl alcohol (PVA) is a versatile synthetic polymer with a wide range of applications across a variety of industries. Its unique properties and wide range of uses make it an important material in modern technology and manufacturing.

Polyvinyl alcohol was first synthesized in 1924 by German chemist Hermann Staudinger. Staudinger's work in polymer chemistry led to the development of PVA by hydrolyzing polyvinyl acetate. The polymer's excellent film-forming properties and water solubility soon highlighted its potential for a variety of applications.

PVA is a white, odorless, water-soluble powder or film. It is known for its high tensile strength, flexibility, and grease resistance. The polymer's solubility in water is temperature-dependent, making it useful in a variety of water-based formulations. PVA also has excellent adhesive properties and can form clear, glossy films.

PVA is widely used in the production of biodegradable packaging materials. Its ability to dissolve in water makes it ideal for eco-friendly packaging solutions. PVA films and coatings are used in water-soluble bags, food packaging, and other disposable items that reduce environmental impact.

In the textile industry, PVA is used as a sizing agent and adhesive. It increases the strength and durability of fabrics during the weaving process and improves the surface finish of textiles. PVA is also used to produce nonwoven fabrics, which are used in applications such as medical gowns and filters.

Polyvinyl alcohol is a key ingredient in water-based adhesives and glues. Its adhesive properties make it suitable for paper, wood, and some plastic bonding applications. PVA adhesives are valued for their clean application and strong bonding capabilities.

PVA is used in medical applications such as wound dressings and drug delivery systems. Its biocompatibility and ability to form hydrogels make it suitable for making controlled-release formulations and tissue engineering scaffolds.

The polymer is used for coatings on a variety of surfaces, including glass, metal, and plastics. It provides a protective layer and enhances surface properties. PVA films are also used in protective coatings for electronic devices and other sensitive components.

Research is being conducted to develop new applications and improve the properties of PVA. Innovations in polymer chemistry and green technology are expected to expand its use in sustainable and high-performance materials.

References

none