poly(vinyl alcohol)


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poly(vinyl alcohol)

(PVOH)

Properties

Glass transition temperature: 85^oC.

Amorphous density at 25^oC: 1.26 g/cm³.

Crystalline density at 25^oC: 1.35 g/cm³.

Molecular weight of repeat unit: 44.00 g/mol.

Repeat Unit

C₂H₄O

Description

Poly(vinyl alcohol) is completely water soluble and thus is used as a thickener in some suspensions and emulsions. Although usually amorphous, it can be drawn into a semicrystalline fiber. However, the melting point of the crystallites is above the thermal degradation temperature.

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