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  • 1 CNR-ISMAC Institute for Macromolecular Studies C. so G. Pella 16 13900 Biella Italy
  • 2 Politecnico di Torino Department of Materials Science and Chemical Engineering C. so Duca degli Abruzzi, 24 10129 Torino Italy
  • 3 ITIS Laboratorio di Analisi Controllo Qualità C. so G. Pella 4 13900 Biella Italy
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Electro-conducting doped polypyrrole was deposited by in situ oxidative polymerisation on PET non-wovens. Thermal properties were evaluated by means of DSC and TG in nitrogen and air. Flame resistance tests reveal that coated PET fibres resist to direct contact with fire. By thermal analysis, it was found that PPy reduces the temperature at which thermo-oxidative degradation of PET occurs. Polypyrrole-coated PET non-wovens were heated above the melting point of PET for 30 min. After the heating the fibres become brittle and frail, but SEM observations revealed that they maintained their fibrous shape. A loss of chlorine was found because of intense heating.