Characterization of Amide and Ester Functionalized Multiwalled Carbon Nanotubes

Abstract

Multi-walled carbon nanotubes (MWCNT) were functionalized by different functional group via amidation and esterification process. The MWCNT were treated with H2SO4/HNO3 first to introduce carboxylic acid functional group on the surface of MWCNT. This carboxylic group was used as reaction precursor in the functionalization. There are two functionalizing reactant were used which is dodecylamine, CH3(CH2)11NH2 and 1-octadecanol, CH(CH)17OH. Electron microscopy revealed that the morphology of amide and ester functionalized MWCNT exhibit decrease in their diameter size due to insertion of amide and ester functional group. Raman measurements showed that G-band (graphitic structure) of amide and ester functionalized MWCNT slightly shifted downfield about 6-8 cm-1 due to presence of new functional group on the surface of MWCNT. Multi-walled carbon nanotubes attached to organofunctional element have greater flexibility for further usage in various application fields such as nanocomposite material, biology and chemical sensor and environmental monitoring.

Mechanical Performance and Applications of CNTs Reinforced Polymer Composites—A Review

“…These oxygen-containing groups can be further treated with other groups like amides, thiols, etc. [ 68 , 69 , 70 , 71 ]. As mentioned by Norizan et al [ 1 ] the mechanical properties of the CNT-reinforced polymer composites can be enhanced by incorporating chemical-functionalised CNTs into the polymer matrix that enables covalent bonding between SWCNTs and MWCNTs.…”

Carbon nanotubes: functionalisation and their application in chemical sensors

“…77 Further chemical reactions can be performed on these oxide groups to functionalise with groups such as amides, thiols, or other groups. [78][79][80] Balasubramanian and Burghard also had clustered the method of covalent functionalisation of SWCNTs that was accomplished through three different approaches, namely, thermally activated chemistry, electrochemical modication, and photochemical functionalisation. 81 Fig.…”

Multi-Walled Carbon Nanotubes Functionalized with Carboxyl and Amide for Acetone detection at Room Temperature

“…All the chemicals and materials were used without any purification and purchased from various suppliers. Functionalization of CNT was published [6]. Basically, CNT was immersed in sulphonitric mixture and sonicated for 2 hours.…”