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The full dissolution and crystallization of PA6 in water and PA4.6 in water and ethanol under pressure are described. Dissolution of PA6 in water is very fast and effective: it is completed during heating at 5°C/min in a DSC without stirring. It drastically lowers subsequent crystallization and melting temperatures. The maximum depression of the crystallization and melting temperatures is...
The way to measure quantitatively full dissolution and crystallization of polyamides in water up to 200°C and above by DSC is described. Stainless-steel high-pressure pans enable research on fully dissolving polyamides in water under vapor pressure. The results show clearly that polyamide 6 (PA6) is soluble in water under vapor pressure in the whole concentration range and that water acts as a crystallization...
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