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Low-temperature extrusion and properties of solidpolyamide-6 calciumchloride complexes

Authors
Journal
Polymer
0032-3861
Publisher
Elsevier
Publication Date
Volume
35
Issue
17
Identifiers
DOI: 10.1016/0032-3861(94)90547-9
Keywords
  • Polymer/Salt Solid Complexes
  • Modified Polyamides
  • Ion-Dipole Interactions

Abstract

Abstract Solid polyamide-6 CaCl 2 polymer complexes with values of the salt/polymer repeat unit molar ratio (τ) as high as 40% were prepared by a new method involving room-temperature extrusion of a blend of polymer and salt powders in the presence of small amounts of methanol, followed by solvent elimination and drying. Complexation between polymer amide groups and salt ions was investigated by infra-red spectroscopy, wide-angle X-ray scattering and differential thermal analysis. Complexes were shown to absorb water more readily and to a greater extent than the parent polymer. The plasticizing effect of water on this type of material was demonstrated by dynamic mechanical measurements.

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