Recycling of dry and wet polyamide 6

Risultato della ricerca: Article

47 Citazioni (Scopus)

Abstract

Recycling of polycondensation polymers can give rise to secondary materials with good mechanical properties only if a careful drying is carried out before the melt reprocessing operations. The presence of humidity provokes the hydrolytic chain scission of the macromolecules and the consequent decrease of molecular weight and properties. In this work, the drying stop was substituted by the addition of an antioxidant that is able to protect the macromolecules because it is the autioxidant is more prone to hydrolysis, thus removing the water from the melt. The mechanical properties of polyamide 6 reprocessed more times in wet conditions and in the presence of this stabilizer are even better than those obtained reprocessing the dry polyamide. (C) 2002 Wiley Periodicals, Inc.
Lingua originaleEnglish
pagine (da-a)1899-1903
Numero di pagine5
RivistaJournal of Applied Polymer Science
Volume86
Stato di pubblicazionePublished - 2002

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Macromolecules
Polyamides
Recycling
Drying
Mechanical properties
Nylons
Polycondensation
Antioxidants
Hydrolysis
Atmospheric humidity
Polymers
Molecular weight
Water
nylon 6

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Surfaces, Coatings and Films
  • Polymers and Plastics
  • Materials Chemistry

Cita questo

Recycling of dry and wet polyamide 6. / La Mantia, Francesco Paolo; Scaffaro, Roberto; Curto, Donato.

In: Journal of Applied Polymer Science, Vol. 86, 2002, pag. 1899-1903.

Risultato della ricerca: Article

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AB - Recycling of polycondensation polymers can give rise to secondary materials with good mechanical properties only if a careful drying is carried out before the melt reprocessing operations. The presence of humidity provokes the hydrolytic chain scission of the macromolecules and the consequent decrease of molecular weight and properties. In this work, the drying stop was substituted by the addition of an antioxidant that is able to protect the macromolecules because it is the autioxidant is more prone to hydrolysis, thus removing the water from the melt. The mechanical properties of polyamide 6 reprocessed more times in wet conditions and in the presence of this stabilizer are even better than those obtained reprocessing the dry polyamide. (C) 2002 Wiley Periodicals, Inc.

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