Preparation of novel bioactive / diatomite nanocomposite based on L-lysine

Ethyl L-lysine dihydrochloride was obtained from L-lysine hydrochloride. This salt was reacted with trimellitic anhydride to yield the corresponding diacid. Interfacial polycondensation results a novel poly(hydrazideimide) (PHI). This polymer have inherent viscosity equal to 0.28 dl g-1, display optical activity, and is readily soluble in polar aprotic solvents. This start to decompose (T10%) at 299.6 ºC and display glass-transi1on temperature at 207.1 ºC. The intercalation of the resulting polymer chains between the silicates layer of diatomite with different ratio were performed by ultrasonic technique. The polymer and its coresponding nanocomposites were fully characterized by UV, FT-IR and 1H NMR spectroscopy, elemental analysis, TGA, DSC, inherent viscosity measurement, transmission electron microscopy (TEM) technique and specific rotation.