New flame retardant and optically active poly(amide-imide)s based on N-trimellitylimido-L-amino acid and phosphine oxide moiety in the main chain: synthesis and characterization

• Autorzy: Faghihi, K. H. , Hajibeygi, M.
• Języki publikacji: EN

Abstrakty

EN

Six new flame retardant and optically active poly(amide-imide)s (PAIs) containing phosphine oxide moiety in the main chain were synthesized by direct polycondensation reactions of six chiral N-trimellitylimido-L-amino acids with bis(3-amino phenyl) phenyl phosphine oxide in a medium consisting of N-methyl-2-pyrrolidone (NMP), triphenyl phosphite (TPP), calcium chloride (CaCl2) and pyridine (Py). The polymerization reactions produced a series of flame retardant and optically active PAIs with high yields and good inherent viscosities in the range of 0.43-0.71 dm3?g-1. The resulting polymers were fully characterized by means of FTIR and 1H-NMR spectroscopy, elemental analyses, inherent viscosity, specific rotation and solubility tests. The thermal properties and flame retardant behaviour of the PAIs were investigated using thermal gravimetric analyses the limiting oxygen index (LOI) tests. Data obtained by the thermal analyses revealed that the polymers showed good thermal stability and also high char yields, in the TGA data, and good LOI values indicating that PAIs have good flame retardant properties.

Słowa kluczowe

EN

poly(amide-imide); flame retardant; polycondensation

• Czasopismo: Materials Science Poland
• Rocznik: 2010
• Tom: Vol. 28, No. 2
• Strony: 545--556
• Opis fizyczny: Bibliogr. 33 poz.

Twórcy

autor

Faghihi, K. H.

autor

Hajibeygi, M.

• Organic Polymer Chemistry Research Laboratory Department of Chemistry Faculty of Science Arak University Arak, 38156 Iran

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