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Polyvinyl alcohol (PVOH/PVA) is a versatile, water-soluble polymer that is used in numerous industries. From packaging to the adhesives industry, PVOH is a sought-after material due to its special properties. In this blog article, we take a closer look at what PVOH is, how it is produced and what it is used for.
Polyvinyl alcohol is produced by polymerization of vinyl acetate and subsequent hydrolysis (saponification) of the polyvinyl acetate. During this process, the acetate groups are split off, resulting in polyvinyl alcohol.
The specific properties of the resulting PVOH depend on the degree of hydrolysis and polymerization, which means that PVOH is available in various grades suitable for different applications. The degree of hydrolysis mainly affects the water resistance, surface activity, melting point and crystallinity, while the degree of polymerization primarily influences the viscosity and mechanical properties.
PVOH has a number of useful properties:
Polyvinyl alcohol is a remarkable material with numerous applications thanks to its unique properties. From packaging and textiles to the medical and construction industries, the uses of PVOH are diverse and far-reaching. Due to its versatility, PVOH remains a favored material for many innovative and sustainable applications.
Although PVOH has been in use for many years, research into new applications and improvements continues, which shows that this polymer is far from having reached the end of its development potential.
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