Sean Reza Taklimi
Wichita State University, USA
Title: Effects of process parameters on chemical functionalization of helicoil carbon nanotubes
Biography
Biography: Sean Reza Taklimi
Abstract
Functionalization of carbon nanotubes with helical configuration was performed through a reflux technique; furthermore, the influence of time and temperature as two key parameters of the treatment process were investigated. To evaluate the effectiveness of the process parameters, the functionalized helicoil nanotubes (HCNTs) were analyzed using various characterization instruments such as, Raman Spectroscopy, Visual Dispersion Test, Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscopy (SEM), and X-ray Diffraction Spectroscopy (XRD). The characterization results showed that most processes parameters were effective and the surface of HCNTs were successfully modified. The functionalized HCNTs demonstrated a higher solubility and more uniform dispersion rate compared to pristine HCNTs. The results also showed that increasing the reflux time and process temperature had no obvious effects on the solubility of HCNTs. On the other hand, prolonging of process time increased the (D/G) ratio in Raman spectrum and changed the intensities and places of the FTIR peaks. With the exception, for the functionalized HCNTs which were treated for 24 hours, all other samples exhibited at least a change in FTIR spectrum.