NANOPARTICLES DISPERSION IN PROCESSING NANOSTRUCTURE CHIRAL POLY(AMIDE-IMIDE)S BASED ON N-TRIMELLITYLIMIDO-L-LEUCINE/TiO2 NANOCOMPOSITES: ALLOCATION AND PROPERTIES

作者：Mallakpour Shadpour^*; Khani Marziyeh

来源：Journal of the Chilean Chemical Society, 2013, 58(1): 1603-1608.

• Polymer nanocomposites
• Molten salt ionic liquid
• TiO2 nanoparticles
• Thermally stable poly (amide-imide)
• Ultrasonic irradiation

Poly(amide-imide)s (PAI)s as engineering materials have received more attention owing to their high thermal and chemical stability. Therefore, organic/inorganic nanocomposite (NC) of these materials has been widely studied in the last few decades. Here, we present PAI-NCs preparation containing surface modified TiO2 nanoparticles (NP)s by employing silane coupling agent under ultrasonic process. Optically active nanostructure PAI was prepared from 5-(2-benzimidazole)-1,3-phenylenediamine (4) and chiral diacid monomer N-trimellitylimido-L-leucine (5) using molten salt tetrabuthylammonium bromide as an activating medium. A considerable improvement of properties can be achieved by inserting NPs into the polymer matrix. The results of field emission scanning electron microscopy and transmission electron microscopy indicated that there is a little aggregation of a large quantity of particles. Thermogravimetric analysis confirmed that the heat stability of the polymer NCs in the temperature range of 400-800 degrees C was enhanced.

• 出版日期2013-3