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4. Spinning from concentrated polymer solutions
This type of process, also known as collodion spinning or dope spinning, is mainly used, as we have already seen :
on the one hand, multifilaments based on polyacrylonitrile, a polymer whose basic unit has the structural formula: (so-called acrylic fibers);
on the other hand, regenerated cellulose multifilaments, the archetype of which is rayon (or rayon-viscose), still used, albeit less and less,...
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Spinning from concentrated polymer solutions
Special process spinning
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ACIT (Association of Textile Chemists) https://asso-acit.fr/
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