Resumo

FAGHIHI, Khalil; SOLEIMANI, Masoumeh  e  SHABANIAN, Meisam. Preparation of New Series of Poly(amide-imide) Reinforced Layer Silicate Nanocomposite Containing N-Trimellitimide-L-Alanine. J. Mex. Chem. Soc [online]. 2011, vol.55, n.4, pp.198-203. ISSN 1870-249X.

A new poly(amide-imide)-montmorillonite series were generated through solution intercalation technique. Cloisite® 20A was used as a modified montmorillonite for ample compatibility with the poly(amide-imide) (PAI) matrix. The PAI 5 chains were synthesized by the direct polycondensation reaction of N-trmiellitylimido-L-alanine (3) with 4,4'-diamino diphenyl ether (4) in the presence of triphenyl phosphite (TPP), CaCl₂, pyridine and N-methyl-2-pyrrolidone (NMP). Morphology and structure of the resulting PAI-nanocomposite films 5a-5d with (5-20 Wt%) silicate particles were characterized by FTIR spectroscopy, X-ray diffraction (XRD), and scanning electron microscopy (SEM). The effect of clay dispersion and the interaction between clay and polymeric chains on the properties of nanocomposites films were investigated by using UV-Vis spectroscopy, thermogravimetric analysis (TGA), and water uptake measurements.

Palavras-chave : Poly(amide-imide); nanocomposite; solution intercalation technique; Polycondensation.

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