Preparation and characterization of Pani and Pani‐Ag nanocomposites via interfacial polymerization

Abstract

Polyaniline (Pani) and Polyaniline-silver nanocomposites (Pani-Ag) were prepared by employing interfacial polymerization using ammonium persulphate as an oxidizing agent. During the polymerization, the Ag þ is reduced to Ag 0 , and the formations of regular nanocomposite materials were studied by Fourier transform infrared spectroscopy and UV-visible spectroscopy techniques. Scanning electron microscopy and transmission electron microscopy images were conducted to characterize the morphology. Thermogravimetric and differential thermal analysis were carried out to study the thermal stability of the resulting composites. Formation of conducting emeraldine salt form was concluded by electrical conductivity.

A new approach to soluble polyaniline and its copolymers with toluidines

“…Two main absorption bands were observed for PANI in all of the five solvents—one around 310 nm assigned to the π –π* transition of the phenyl ring and another around 620 nm assigned to the n–π* transition. The absorption peaks in the 300–320 nm region and that at 550–610 nm region, respectively, correspond to excitation of amine nitrogen of the benzenoid segments and imine nitrogen of the quinoid segments 10, 22–24. These peaks shifts to 346–354 nm and 606–607 nm for POT and PMT, respectively, hence revealing a decrease in the extent of conjugation and an increase in the band gap.…”

“…Figure 5 shows the X‐ray diffraction patterns of homopolymers and copolymers. The PANI exhibits three broad peaks at 2θ angles around 10.3°,19.5°, and 25.5°, 2θ = 25.5° is characteristics of the van der Waals distances between stacks of phenylene rings (polyaniline ring) 24, 27. These broad peaks indicate crystalline domains in the amorphous structure of PANI The chain length of PANI is about 4.355AU 28.…”

Spectral, surface and thermal properties of poly(vinylpyrrolidone)/organo-modified-TiO2/organo-modified-layered silicate ternary nanocomposites containing l-leucine amino acid fabricated by sonication process

“…53 By taking the typical peak for TiO 2 in the XRD pattern (i.e., 101), the value of D is calculated to be about 23-27 nm. XRD curves recorded for the MMT (a), OM-MMT (b), and PPTM NC 7 wt% (c) are shown in Figure 6.…”

Soluble, Antibaterial, and Anticorrosion Studies of Sulfonated Polystyrene/Polyaniline/Silver Nanocomposites Prepared with the Sulfonated Polystyrene Template

“…[17][18][19][20] It exhibits a wide range of potential applications in various fields such as electronic and electrochromic equipments, electromagnetic shielding, photochemical cells, separation membranes, biosensors and anticorrosion coatings due to these interesting properties. [23][24][25] However, the obtained polyaniline/silver (PANI/Ag) composites suffer from poor processabilities because PANI is hardly soluble in common organic solvents and water. [23][24][25] However, the obtained polyaniline/silver (PANI/Ag) composites suffer from poor processabilities because PANI is hardly soluble in common organic solvents and water.…”