OICC Press International Nano Letters 2228-5326 5 3 (September 2015) 2015 05 30 Raman spectroscopy and TGA studies for the synthesis of multi-walled carbon nanotube-functionalized thiol (MWCNT-SH) nanocomposites: study of effect of concentration 10.1007/s40089-015-0152-9 EN D. Robati Department of Chemistry, Islamshahr Branch, Islamic Azad University, Islamshahr, IR S. Bagheriyan Department of Science, Shahryar Branch, Islamic Azad University, Shahryar, IR M. Rajabi Department of Chemistry, Arak Branch, Islamic Azad University, Arak, IR Journal Article 2015 05 30 Abstract We have investigated some methods such as Raman spectroscopy and thermogravimetric analysis (TGA) studies for the nanocomposites multi-walled carbon nanotube-functionalized thiol (MWCNT-SH) by adding to cysteamine with known concentration in nanocomposite. For this study, we synthesized nanocomposite MWCNT-SH by the reaction between multi-walled carbon nanotubes-functionalized carboxyl and the cysteamine. For study of the effect of concentration, cysteamine with different concentrations was used (1, 3 and 5 % weight) and it was called MWCNT-SH1, MWCNT-SH3 and MWCNT-SH5, respectively. Then, the nanocomposite provided was characterized by Fourier transform infrared spectroscopy (FT-IR) and scanning electron microscope (SEM). The surface structure of nanocomposites can be analyzed and confirmed using Raman and FT-IR spectroscopy. Also, to investigate the thermal stability TGA was used. The study of TGA showed that nanocomposite MWCNT-SH had low thermal stability at temperatures more than 100 °C.