New phosphazene-based chain extenders containing allyl and epoxide groups

Roberto Scaffaro, Nadka Tzankova Dintcheva, Francesco Paolo La Mantia, Ghedini, N.Tz. Dintcheva, Francesco Paolo La Mantia, Pannocchia, Venzo, Boscolo-Boscoletto, Roberto Scaffaro, Gleria, Alessandro Sassi, Pace, Bertani

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)


In this paper we present the synthesis and the characterization of cyclophosphazenes substituted with allyl groups, their transformation in epoxide-containing cyclophosphazenes and the final utilization of these compounds as chain extenders in combination with polyamides. The reaction at high temperature of Nylon-6 with epoxy-functionalized cyclophosphazenes leads to the opening of the epoxy units by the action of both amino (-NH2) and carboxylic (-COOH) end-groups of the polymer to enhance the final molecular weight of this material. The consequences of this fact on the thermal, mechanical and visco-elastic properties of treated Nylon-6 have been also evaluated and compared to those of the pristine material. Possible utilization of these cyclophosphazenes in recycling processes for degraded polyamides could be envisaged.
Original languageEnglish
Pages (from-to)245-266
Number of pages22
JournalDesigned Monomers and Polymers
Publication statusPublished - 2012

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • General Chemical Engineering
  • Polymers and Plastics
  • Materials Chemistry


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