Polyvinyl Alcohol (PVA)
Chemical Formula: C₂H₄O (simplified for basic representation, actual polymer structure is more complex)
CAS Number: 9002-89-5
Appearance: White granular or powder form.
Key Features
Strong film-forming ability, capable of forming transparent and flexible films.
Highly soluble in water, with the solubility depending on its degree of polymerization and modification.
Relatively stable under normal environmental conditions, but may degrade under strong acids, bases, or high temperatures for extended periods.
Non-toxic and biodegradable, considered environmentally friendly.
Versatile and widely used in diverse industrial, medical, and consumer product applications.
Applications
1. Textile Industry:
Used as a sizing agent to protect fibers during weaving and improve yarn strength.
Acts as a finishing agent to enhance fabric properties like wrinkle resistance and water repellency.
2. Paper Industry:
Improves the strength and smoothness of paper by acting as a binder.
Enhances the water resistance of paper products.
3. Pharmaceuticals:
Used as a binder and disintegrant in tablet formulation.
Can be used for controlled drug release applications.
4. Adhesive Industry:
Serves as an adhesive for various materials, including wood, paper, and plastics.
Provides good adhesion and flexibility in adhesive formulations.
5. Cosmetics and Personal Care:
Acts as a stabilizer and thickener in creams, lotions, and gels.
Helps suspend ingredients and maintain product consistency.
Safety and Handling
Storage: Store in a cool, dry place away from direct sunlight and moisture. Keep away from incompatible substances such as strong oxidizing agents.
Safety: Wear appropriate personal protective equipment (PPE) including gloves, safety glasses, and dust masks when handling to prevent inhalation and skin contact.
Transport: Transport in accordance with the regulations for non-hazardous chemicals, ensuring proper packaging and labeling.
