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Abstract : Carbon nanotube (CNTs) is a tube consisting of carbon with a nanometer diameter. CNT like other nanomaterials have several advantages and disadvantages. Due to their inherent properties: small size, large surface area, chemical stability, biocompatibility, excellent electrical and thermal conductivity and flexibility. CNTs attracted a considerable interest in nanotechnology, medication, and industrialization. They could be used as a targeted drug delivery system, as a diagnostic tool and also in tissue engineering. In general there are many techniques like TGA, SEM, TEM, AFM, NMR and IR might be used for the evaluation purpose of purity, dispersion, physical and functional properties of CNTs.