Author/Authors :
daud, noraniza ahmad universiti putra malaysia (upm) - faculty of science - department of chemistry, Serdang, Malaysia , chieng, buong woei universiti putra malaysia (upm) - faculty of science, institute of advanced technology - department of chemistry, materials processing and technology laboratory, Serdang, malaysia , ibrahim, nor azowa universiti putra malaysia (upm) - faculty of science, institute of advanced technology - department of chemistry, materials processing and technology laboratory, Serdang, malaysia , talib, zainal abidin universiti putra malaysia ( upm ) - faculty of science - department of physics, Serdang, Malaysia
Abstract :
Gamma-ray irradiation technique was used to functionalise graphene oxide (GO) withvarious alkyl chain length alkylamine. Functionalisation of alkylchain onto the GO was confirmed by nuclear magnetic resonance (1H NMR), Fourier transform infrared (FTIR) and X-ray diffraction (XRD). FTIR of functionalised GO showed the appearance of significant peaks around 2850–2960 cm^–1 (–CH2) which come from long alkylchain together with peak around 1450–1560 cm^–1 indicating the formation of C–NH–C. XRD showed an additional diffraction peak at lower 2θ angle, indicating that the intercalation of alkylamine was successful. The effects of various alkyl lengths functionalised-GO on morphological and thermal properties were investigated. Scanning electron microscopy (SEM) analysis showed an increase in surface roughness when the alkyl chain length increases. The addition of alkylchain on GO surfaces significantly improves the thermal stability of GO, suggesting their great potential for hydrophobic material in industry.
Keywords :
Graphene oxide , functionalisation , alkylamine , gamma , irradiation
