Nanostructured Polyaniline Emeraldine-base form (EB-PANI): a structural investigation for different neutralization times

Enhanced tailored of thermal stability, optical and electrochemical properties of PANI matrix containing Al2O3 hybrid materials synthesized through in situ polymerization

“…XRD patterns of pure PANI exhibit loss of crystallinity. The peaks located at 2θ values 9.59°, 15.47°, 20.23°, and 24.76° are in agreement with those reported by Sanches 31 . In addition, the peaks at 2θ values 25.54°, 35.10°, 37.73°, 43.34°, 52.51°, 57.50°, 61.33°, 66.44°, and 68.18° correspond to (012), (104), (110), (113), (024), (116), (018), (214), and (300) reflections of Al 2 O 3 nanoparticle (JCPDS no.…”

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

“…In the present work, the DC electrical conductivity of PANI-EB/ a -Al 2 O 3 was obtained, by the average of three samples,tobearound 1.57 · 10 -9 Scm -1 .Thus we observe almost 80-fold decrease in the conductivity of the nanocomposite when compared with that of the pure sample of polyaniline in the emeraldine-base which is around 1.32 · 10 -7 Scm -1 [39]. Note that the matrix is composed only of insulating material and the PANI-EB contributes to an increase in nanocomposite electrical resistivity.…”

“…Sanches et al [17] estimated the percentage of crystallinity to be around 70 %for ananocomposite composed of polyaniline emeraldine-salt (PANI-ES) and a -Al 2 O 3 .T he crystallinity of pure PANI-EB is estimated to be ca. 30 % [39]. Thus, the crystallinity of the as-synthesized nanocomposite is larger than that of pure PANI-EB and smaller than that of pure a -Al 2 (Fig.…”

“…E. A. Sanches et al: Nanocomposite based on polyaniline emeraldine-base and a -Al 2 O 3 :As tructural characterization It is well known that polyanilinei nt he emeraldine ( \ half-oxidized" )o xidation state can be reversibly switched between electrically insulatinga nd conducting forms [42,43]. However, even in the insulating form, the conductivity of PANI-EB can present considerably high values [ 39] and crystallinity can be as high as 50 % [ 44]. On the otherh and, alumina is an electrical insulatorw ith DC electrical conductivity of about 10 -14 Scm -1 .…”

Preparation, characterization and application on dye adsorption of a well-defined two-dimensional superparamagnetic clay/polyaniline/Fe3O4 nanocomposite

“…2d) (Mahat et al, 2015). of Mt, the absorption bands at 1576, 1495, 1309, 1248, and 830 cm −1 could be assigned to C_C stretching of benzenoid ring, C_N stretching of quinoid ring, C\ \N stretching of secondary aromatic amines, C\ \N + (or C_N + ) in polar on lattice, C\ \H out of plane bending on 1,2,4-ring, respectively (Sanches et al, 2014). The band centered at 579 cm −1 was related to the Fe\ \O stretching vibration absorption peak (Cheng and Zheng, 2014).…”