In this thesis, The optically active poly(ester-imide)s (PEI)s were synthesized through a step-growth polymerization. For this purpose, pyromellitic dianhydride, trimellitic anhydride, and amino acids (L-phenylalanine, L-leucine, L-isoleucine, S-valine) have been used for the preparation of optically active diacids. These diacids react with 4,4?-thiobis(2-tert-butyl-5-methylphenol) by using tosyl chloride/ N,N -dimethylformamide/pyridine as a condensing agent under conventional heating to prepare the chiral PEIs. The carboxylated multiwalled carbon nanotubes (MWCNTs) were functionalized with 5-aminoisophthalic acid and biological molecules such as riboflavin (vitamin B2), ascorbic acid (vitamin C), and S-valine amino acid under microwave irradiation. The grafting was confirmed by FT-IR spectroscopy, thermogravimetric analysis (TGA), field emission scanning electron microscopy (FE-SEM), and transmission electron microscopy (TEM) techniques. The carboxylated and functionalized MWCNTs were dispersed in organic solvents and incorporated into the obtained PEI matrix. The nanocomposites containing different amount of carboxylated and functionalized MWCNTs (5, 10, 15 wt%) were prepared using solution mixing and the ultrasonic dispersion technique. The products were characterized for assessing the spectroscopic, thermal and morphological properties by X-ray diffraction, FT-IR spectroscopy, TGA, FE-SEM, and TEM analyses.
