Poly (vinyl methyl ether) powder

Poly(vinyl methyl ether) Solution (PVME Solution)

Key Properties

• Molecular weight: ~45,000–90,000 g/mol
• Density: 1.03 g/mL (25 °C)
• Refractive index: n₂₀/D 1.467
• Glass transition temperature (Tg): −34 °C to −49 °C
• Viscosity (23 °C): 20,000–25,000 mPa·s (50% aqueous solution)
• Thermosensitivity: Exhibits an LCST (lower critical solution temperature) around 33 °C; the solution turns cloudy and undergoes phase separation upon heating above this temperature.

Applications

• Adhesives & coatings: Enhances adhesion and quick‑stick properties for packaging, laminating, and pressure‑sensitive adhesives.
• Biomedicine: Serves as a biocompatible, non‑toxic material for temperature‑responsive hydrogels, drug delivery systems, and transdermal formulations.
• Personal care: Acts as a thickener, film‑former, and emulsifier in cosmetics and toiletries.
• Textiles & leather: Used for fabric sizing, leather finishing, and impregnation due to its excellent binding capacity.

Handling & Storage

• Storage: Keep tightly closed at room temperature; avoid direct sunlight and extreme heat.
• Hazards: Classified as an irritant; wear gloves and chemical goggles during handling.