Chemical synthesis of nanocomposites via in-situ polymerization of aniline and iodoaniline using exchanged montmorillonite

Abstract

The focus of this research is to synthesis different nanocomposites by in situ chemical polymerization. The nanocomposites were prepared by intercalating monomers such as aniline, iodoaniline or combination of aniline and 2-iodoaniline into modified montmorillonite clay. The syntheses were carried out using ammonium persulfate as oxidant with different molar ratios of oxidant to monomer. The resulting nanocomposites were investigated and confirmed by X-ray fluorescence spectroscopy, XRD, UV-visible, FTIR spectroscopy, cyclic voltammetry and transmission electron microscopy techniques. XRD patterns show that, the intensity of diffraction peaks for polymers/(M-Na) composites are lower than that for (M-Cu). This is attributed to the interaction of montmorillonite with polyaniline (PANI), polyiodoaniline (PIANI) and poly (ANI- co-2-IANI) molecular chains. The FTIR and UV-vis spectroscopic results also confirmed the presence of iodine in the nanocomposite. When looking at the yield of the process, highest yield is obtained for the poly (ANI- co-IANI) (80:20 molar ratio) and the lowest yield is for PANI/M-Na composite.

Structural Characterization of Composites Based on Butadiene Rubber and Expanded Perlite

“…Interestingly, in contrast to PhBR, a red shift was observed in the UV-Vis spectrum of EP/PhBR, and a blue shift was observed in the UV-Vis spectrum of PhEP/PhBR. The red shift in the UV-Vis spectrum of EP/PhBR is related to the incorporation of EP into the PhBR matrix and has been observed in composite materials in many research studies [28,29]. This may also be due to the formation of an H-bond between -OH of EP and O=P-in phosphoric acid groups of PhBR.…”

Electrosynthesis and Characterization of Novel CNx-HMMT Supported Pd Nanocomposite Material for Methanol Electro-Oxidation

“…An in situ polymerization was adopted for the preparation of PANI/MMT nanocomposites [30,31,34,35]. In this method, 2 mL of aniline monomer in 100 mL of 1M HCl were vigorously stirred, and 20 wt% of MMT nano powder was added.…”

“…The electrochemical measurements were performed using a typical three-electrode cell at room temperature [34,38]. The electrochemical measurements of all prepared samples were carried out using a Pine WaveNowXV potentiostat, commercial 20 wt % Pd/C supplied by E-TEK, Co. was also tested as reference material [39].…”

Synthesis and Catalytic Studies of Nanoalloy Particles Based on Bismuth, Silver, and Rhenium

“…Using chemical synthesis methods, nanoparticles with a complex composition can be synthesized [17][18][19][20]. The formation of core-shell particles allows the combination of materials that have entirely different properties and do not form solid solutions.…”