Reactive blending of polyamide 6, 6 and vectra A, -Role of a bifunctional epoxy coupler (Articolo in rivista)

Type
Label
  • Reactive blending of polyamide 6, 6 and vectra A, -Role of a bifunctional epoxy coupler (Articolo in rivista) (literal)
Anno
  • 2002-01-01T00:00:00+01:00 (literal)
Alternative label
  • Castellano M., Nebbia D., Turturro A., Valenti B., Costa G., Falqui L. (2002)
    Reactive blending of polyamide 6, 6 and vectra A, -Role of a bifunctional epoxy coupler
    in Macromolecular chemistry and physics (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Castellano M., Nebbia D., Turturro A., Valenti B., Costa G., Falqui L. (literal)
Pagina inizio
  • 1614 (literal)
Pagina fine
  • 1624 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 203 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Titolo
  • Reactive blending of polyamide 6, 6 and vectra A, -Role of a bifunctional epoxy coupler (literal)
Abstract
  • In a previous paper Nylon 6,6 / Vectra A blends have been prepared and investigated; in particular our attention has been focused on Nylon 6,6 modifications due to interchange reactions that occur in the melt, as a function of mixing conditions and blend compositions, and improve the compatibility of the blend. The results indicated that only a small amount of copolymeric species form because of the low reaction kinetics and unfavourable physical and rheological aspects. In order to overcome these limits a further research on Nylon 6,6 / Vectra A blends has been carried out to test the role of modified processing conditions in the presence of a reactive additive able to improve the extent of reactions between blend components and the melt viscosity of the polyamide matrix. The potential of a Nylon 6,6 sample with predominant -NH2 end groups on its reactive blending with Vectra with or without the reactive third component has been investigated. Nylon and Vectra, combined in weight ratios between 90/10 and 50/50, were subjected to reactive blending with different methods (a laboratory pyrex reactor, a single-screw extruder and a Brabender mixer). Neat Nylon samples have been also investigated as reference materials. Thermal and morphological analyses were carried out on the blends. The soluble Nylon 6,6-rich fraction of each blend was separated from the insoluble Vectra-rich one and both used for spectroscopic characterisations; mixed Nylon-Vectra copolymers have been recognised in both the soluble and insoluble fractions of the blends. (literal)
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