Polyvinyl alcohol (or PVA for short) is formally the polymer of vinyl alcohol. It is also known under protected brand names such as Kuraray Poval®, Mowiflex® or Kuralon®. Unlike many other synthetic polymers, PVA is biodegradable in most cases. Depending on its composition and pre-treatment, PVA is easily soluble in water or absorbs it with swelling. Due to its hydrophilic character, polyvinyl alcohol can be easily embedded in polar matrices.
Our high-modulus, kidney-shaped PVA fibres have a diameter of approx. 13 µm and are available in various grindings and lengths.
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Although polyvinyl alcohol is formally the polymer of vinyl alcohol, it cannot be made directly from it. Instead, the acetic acid ester of vinyl alcohol – known as vinyl acetate – is polymerised. The vinyl acetate polymer is hydrolysed in the subsequent step to release the hydroxyl groups of the vinyl alcohol again. The degree of hydrolysis (usually 85–98 %) essentially determines the properties of the PVA. Whereas incompletely hydrolysed PVA usually dissolves very well in cold water, fully hydrolysed PVA can only be dissolved in hot water, which takes a long time. The production of fibre from PVA can take place in a wet spinning process as well as in a dry spinning process.
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Contact our fibre experts and discover our extensive STW sample box with numerous raw material samples, personally tailored to your needs and requirements.
State-of-the-art laboratory facilities, quality management according to ISO 9001:2015, energy management according to ISO 50001:2018 and last but not least the high demands on our own work ensure the high quality standards of our Polyvinyl alcohol fibre. See for yourself.
If you want to know more about the technology and quality of our Polyvinyl alcohol fibre If you want to know, just get in touch with us. We would be happy to advise you comprehensively and help you with our know-how.
You are looking for the perfect Polyvinyl alcohol fibre for your application or have an exact requirement profile, which the used Polyvinyl alcohol fibre must fulfill?
Then you are exactly right, as a technology leader in the field of fiber development and production, we offer you individual solutions and manufacturing processes that ensure constant and reproducible fiber quality.
