Reactions occurring during the melt mixing of nylon 6 and oxazoline - Cyclophosphazene units

Roberto Scaffaro, Luigi Botta, Maria Chiara Mistretta, Sebastiano Bazzano, Filippo Samperi, Roberta Bertani, Roberto Milani, Salvatore Battiato

Risultato della ricerca: Article

10 Citazioni (Scopus)

Abstract

Specific reactions of amino and carboxyl end groups of Nylon 6 with the reactive oxazoline groups belonging to a cyclophosphazene compound (referred as CP20XA) were carried out at 240 °C for different times, under inert atmosphere. Ny6 polymers terminated with one specific reactive chain end (-COOH or NH2) were reacted with different amounts of CP20XA to study the kinetic order of the reactions. All Ny6-CP20XA reacted products soluble in trifluoroethanol (TFE) were well characterized by MALDI-TOF MS, FT-IR and ( 1H and 13C) NMR techniques. The MALDI-TOF results show that the oxazoline rings react with the carboxyl chain ends of Ny6 following second-order kinetics. The reactions with amino chain ends are very fast and high amounts of gels are produced in just 5 min heating, whereas traces of gel are formed when Ny6C00H and CP-20XA are reacted for 60 min. The gels were characterized by FTIR analyses, and also by MALDI-TOF MS after partial acid hydrolysis. MALDI-TOF mass spectra reveal also that oxazoline rings can react with -NH amide groups along the Ny6 chains, and with secondary amino groups formed by a condensation reaction involving the elimination of ammonia from two amino chain ends. These side reactions could be responsible of the formation of the gels. The polymerization of CP20XA was also observed, and the oligomers formed could also react with Ny6 samples during the melt mixing.
Lingua originaleEnglish
pagine (da-a)5579-5592
Numero di pagine14
RivistaMacromolecules
Volume42
Stato di pubblicazionePublished - 2009

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Gels
Trifluoroethanol
Kinetics
Condensation reactions
Amides
Ammonia
Oligomers
Hydrolysis
Polymers
Polymerization
Nuclear magnetic resonance
Heating
Acids
nylon 6

All Science Journal Classification (ASJC) codes

  • Organic Chemistry
  • Materials Chemistry
  • Inorganic Chemistry
  • Polymers and Plastics

Cita questo

Reactions occurring during the melt mixing of nylon 6 and oxazoline - Cyclophosphazene units. / Scaffaro, Roberto; Botta, Luigi; Mistretta, Maria Chiara; Bazzano, Sebastiano; Samperi, Filippo; Bertani, Roberta; Milani, Roberto; Battiato, Salvatore.

In: Macromolecules, Vol. 42, 2009, pag. 5579-5592.

Risultato della ricerca: Article

Scaffaro, R, Botta, L, Mistretta, MC, Bazzano, S, Samperi, F, Bertani, R, Milani, R & Battiato, S 2009, 'Reactions occurring during the melt mixing of nylon 6 and oxazoline - Cyclophosphazene units', Macromolecules, vol. 42, pagg. 5579-5592.
Scaffaro, Roberto ; Botta, Luigi ; Mistretta, Maria Chiara ; Bazzano, Sebastiano ; Samperi, Filippo ; Bertani, Roberta ; Milani, Roberto ; Battiato, Salvatore. / Reactions occurring during the melt mixing of nylon 6 and oxazoline - Cyclophosphazene units. In: Macromolecules. 2009 ; Vol. 42. pagg. 5579-5592.
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abstract = "Specific reactions of amino and carboxyl end groups of Nylon 6 with the reactive oxazoline groups belonging to a cyclophosphazene compound (referred as CP20XA) were carried out at 240 °C for different times, under inert atmosphere. Ny6 polymers terminated with one specific reactive chain end (-COOH or NH2) were reacted with different amounts of CP20XA to study the kinetic order of the reactions. All Ny6-CP20XA reacted products soluble in trifluoroethanol (TFE) were well characterized by MALDI-TOF MS, FT-IR and ( 1H and 13C) NMR techniques. The MALDI-TOF results show that the oxazoline rings react with the carboxyl chain ends of Ny6 following second-order kinetics. The reactions with amino chain ends are very fast and high amounts of gels are produced in just 5 min heating, whereas traces of gel are formed when Ny6C00H and CP-20XA are reacted for 60 min. The gels were characterized by FTIR analyses, and also by MALDI-TOF MS after partial acid hydrolysis. MALDI-TOF mass spectra reveal also that oxazoline rings can react with -NH amide groups along the Ny6 chains, and with secondary amino groups formed by a condensation reaction involving the elimination of ammonia from two amino chain ends. These side reactions could be responsible of the formation of the gels. The polymerization of CP20XA was also observed, and the oligomers formed could also react with Ny6 samples during the melt mixing.",
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T1 - Reactions occurring during the melt mixing of nylon 6 and oxazoline - Cyclophosphazene units

AU - Scaffaro, Roberto

AU - Botta, Luigi

AU - Mistretta, Maria Chiara

AU - Bazzano, Sebastiano

AU - Samperi, Filippo

AU - Bertani, Roberta

AU - Milani, Roberto

AU - Battiato, Salvatore

PY - 2009

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N2 - Specific reactions of amino and carboxyl end groups of Nylon 6 with the reactive oxazoline groups belonging to a cyclophosphazene compound (referred as CP20XA) were carried out at 240 °C for different times, under inert atmosphere. Ny6 polymers terminated with one specific reactive chain end (-COOH or NH2) were reacted with different amounts of CP20XA to study the kinetic order of the reactions. All Ny6-CP20XA reacted products soluble in trifluoroethanol (TFE) were well characterized by MALDI-TOF MS, FT-IR and ( 1H and 13C) NMR techniques. The MALDI-TOF results show that the oxazoline rings react with the carboxyl chain ends of Ny6 following second-order kinetics. The reactions with amino chain ends are very fast and high amounts of gels are produced in just 5 min heating, whereas traces of gel are formed when Ny6C00H and CP-20XA are reacted for 60 min. The gels were characterized by FTIR analyses, and also by MALDI-TOF MS after partial acid hydrolysis. MALDI-TOF mass spectra reveal also that oxazoline rings can react with -NH amide groups along the Ny6 chains, and with secondary amino groups formed by a condensation reaction involving the elimination of ammonia from two amino chain ends. These side reactions could be responsible of the formation of the gels. The polymerization of CP20XA was also observed, and the oligomers formed could also react with Ny6 samples during the melt mixing.

AB - Specific reactions of amino and carboxyl end groups of Nylon 6 with the reactive oxazoline groups belonging to a cyclophosphazene compound (referred as CP20XA) were carried out at 240 °C for different times, under inert atmosphere. Ny6 polymers terminated with one specific reactive chain end (-COOH or NH2) were reacted with different amounts of CP20XA to study the kinetic order of the reactions. All Ny6-CP20XA reacted products soluble in trifluoroethanol (TFE) were well characterized by MALDI-TOF MS, FT-IR and ( 1H and 13C) NMR techniques. The MALDI-TOF results show that the oxazoline rings react with the carboxyl chain ends of Ny6 following second-order kinetics. The reactions with amino chain ends are very fast and high amounts of gels are produced in just 5 min heating, whereas traces of gel are formed when Ny6C00H and CP-20XA are reacted for 60 min. The gels were characterized by FTIR analyses, and also by MALDI-TOF MS after partial acid hydrolysis. MALDI-TOF mass spectra reveal also that oxazoline rings can react with -NH amide groups along the Ny6 chains, and with secondary amino groups formed by a condensation reaction involving the elimination of ammonia from two amino chain ends. These side reactions could be responsible of the formation of the gels. The polymerization of CP20XA was also observed, and the oligomers formed could also react with Ny6 samples during the melt mixing.

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