Poly(vinyl alcohol) PVA resin

Product Overview

Poly(vinyl alcohol) (PVA, also written polyvinyl alcohol / polyvinyl alcohol PVOH / PVOH / PVA) — CAS 9002-89-5 — is a water-soluble, high-molecular-weight synthetic polymer supplied as powder, flakes or aqueous solutions. PVA is produced by hydrolysis of poly(vinyl acetate) and its functional OH groups give it strong film-forming, adhesive and emulsifying properties. Grades vary by degree of hydrolysis and polymerization (examples: PVA 1788, PVA 2488, Mowiol 4-88, PVA 224, PVA 2688), enabling selection for cold-water-soluble or fully/hydrolyzed performance.

Particle Size: from flake to 200 mesh

Polyvinyl alcohol is a solid that can be in the form of white powder, flakes or floc.
Glass transition temperature is 60~85℃. Polyvinyl alcohol contains many alcohol groups, is polar, and can form hydrogen bonds with water, so it can be dissolved in polar water. Polyvinyl alcohol is also soluble in hot hydroxyl-containing solvents such as glycerol, phenol, etc., but insoluble in general organic solvents such as methanol, benzene, acetone, and gasoline.

Key Properties & Typical Specifications

Melting Point	>300 °C
Boiling Point	-14.5°C (rough estimate)
Bulk Density	400-670kg/m3
Density	1.080 g/cm3
Tg	73
Tg	99
Tg	99°C
Refractive Index	1.3810 (estimate)
Fp	79°C
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