Abstract. In this work, we fabricated the composites containing multi-walled carbon nanotubes (MWNTs) and 4- methoxyphenyl-40-propylbenzoate (MPPB), a monotropic nematic liquid crystal (LC), via ultrasonication. The nematic phase and thermal stability of the resultant MWNTs/MPPB nanocomposites were investigated by polarized optical microscopy (POM) and thermogravimetric analyzer (TGA) respe…