Nanocomposite based on polyaniline emeraldine-base and α-Al₂O₃: A structural characterization

Abstract

Nanocompositeb ased on polyaniline emeraldinebase and a -Al 2 O 3 :Astructural characterization Ac eramic-matrix nanocomposite based on polyaniline emeraldine base and aluminum oxide (PANI-EB/a -Al 2 O 3 ) was obtained by in-situ polymerization. X-ray diffraction pattern presented peaks related to bothmaterials. The level of crystallinity was estimated at about 53 %. The average crystallite sizes of PANI-EB and a -Al 2 O 3 werefound to be * 40 Åa nd 570 Å, respectively. Scanning electron microscopy showed polymerization over ceramic particles. Fourier-transform infrared spectroscopy suggested physical deposition. The electrical conductivity of the PANI-EB/aAl 2 O 3 nanocomposite was decreased by afactor of 80 when compared withthat of pure PANI-EB.Therefore, the polymeric reinforcementa nd the ceramicm atrix maintained their original structural features, but the electrical conductivity in the nanocomposite was reduced.

Impedance Analysis of Polyaniline in Comparison with Some Conventional Solid Electrolytes

“…FTIR results confirm the successful synthesis and doping of PANI samples as well. It can be clearly seen from Figure that in the range 1600–800 cm –1 , which covers characteristic vibrational and rotational bands of the functional groups, the FTIR spectra of both samples have a number of common peaks corresponding to the standard PANI reported in the literature. ,− The major characteristic bands at 1580 and 1485 cm –1 are assigned to the C–C stretching mode of the aromatic ring of quinoid imine and benzenoid diamine, respectively. , The peaks at 1300 and 1220 cm –1 correspond to the N–H bending and C–N symmetric stretching modes for the benzenoid unit, respectively. The band at 802 cm –1 can be attributed to C–H out-of-plane bonding in the benzenoid ring.…”

“…41,43−45 The major characteristic bands at 1580 and 1485 cm −1 are assigned to the C−C stretching mode of the aromatic ring of quinoid imine and benzenoid diamine, respectively. 43,44 The peaks at 1300 and 1220 cm −1 correspond to the N−H bending and C−N symmetric stretching modes for the benzenoid unit, respectively. The band at 802 cm −1 can be attributed to C−H out-of-plane bonding in the benzenoid ring.…”

Investigation of Alumina-Doped Prunus domestica Gum Grafted Polyaniline Epoxy Resin for Corrosion Protection Coatings for Mild Steel and Stainless Steel

“…The band at 753 cm −1 is assigned to the C-H bending vibration, while the occurrence of the peak at 1003 cm −1 is due to -SO 3 H of DBSA, confirming the doping of DBSA into the polymer chain [ 26 ]. The peak at 689 and 580 cm −1 is attributed to Al 2 O 3 , confirming the incorporation of Al 2 O 3 into the PDG-g-PANI chain [ 28 ].…”

Production, structural and corrosion protection study of electroactive polyamide/alumina nanocomposites

“…With the increase of Al 2 O 3 nanoparticle content in the composites the conductivity decreases, this may be due to the hindrance of electrons transportation path in the EPA chain structure. This hindrance effect will increase on increasing the content of Al 2 O 3 particles in the composite as seen in EPA/Al 2 O 3 (III) NC[30].…”