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Viscoelasticity Evolution of Ethylene-vinyl-acetate Copolymers During Crystallization
Chemical Engineering Transactions
In polymer processing as fibre spinning, injection moulding, film casting and so on, the forming phase of the melt is followed by its solidification due to cooling. This implies the crystallization of the polymer during the processing. Typically, crystallites are formed and an ordered structure can be detected, if the cooling rate is not too high. As a consequence, during processing the rheological response of the material significantly changes from a liquid-like to a solid-like behaviour. Thedoi:10.3303/cet1974183 doaj:715b7919df934b4fbfcadf5e71c26556 fatcat:f55schmbnre4dlxohpy6cs53ta