Comparative study of 2‐amino and 3‐aminobenzoic acid copolymerization with aniline synthesis and copolymer properties

Abstract

Polyanilines soluble in an aqueous basic medium were synthesised by copolymerization of aniline (ANI) with both 2 and 3‐aminobenzoic acids (ABA). Different composition copolymers were prepared by varying the ANI/ABA feed ratio. Poly(aniline‐co‐2‐aminobenzoic acid) (PANI2ABA) and poly(aniline‐co‐3‐aminobenzoic acid) (PANI3ABA) displayed differences in their properties, such as specific charge and fluorescence behavior because the reactivity of 2‐aminobenzoic (2ABA) and 3‐aminobenzoic (3ABA) acids are very different. The new materials were characterized by X‐ray photoelectron, Fourier transform infrared, and Raman spectroscopies. © 2004 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 42: 5587–5599, 2004

Effect of the intercalated cation on the properties of poly(o-methylaniline)/maghnite clay nanocomposites

“…Furthermore, the same behavior was proposed using quartz crystal microbalance and probe beam deflection coupled to the electrochemical systems, for polyaniline [37] and poly(o-methylaniline) [39]. Therefore, we can conclude that in poly(o-methylaniline) created into Magh-Cu a similar behavior takes place, and that the broad anodic peak consists on the overlapping of two redox processes.…”

“…Figure 8 shows that there are remarkable differences. Thus, the PoMea produced from Magh-Cu is electroactive; however, no redox processes are observed for the same polymer from PoMea/Magh-H. For PoMea/Magh-Cu, a broad anodic peak at 0.72 V appears and two reduction peaks (at 0.44 V and around 0.6 V) are observed in the reverse scan, which suggest the existence of two redox processes as occurs in most ring-substituted polyaniline [34][35][36][37].…”

Electrochemical behaviour of conducting polymers obtained into clay-catalyst layers. An in situ Raman spectroscopy study

“…In addition, all the copolymers shows 238 the same behaviour (one clear redox process). 239 Therefore, besides that the properties of this kind of 240 conducting polymers does not depend on the type of 241 anion used in the synthesis [16], the electrochemical 242 properties depend strongly on the proton source 243 (inorganic acids or Mag-H catalyst). 244 The electrochemical behaviour is being studied 245 more in detail using in situ spectroscopic (FTIR) 246 and optical techniques and the results will be 247 reported elsewhere.…”

Molecular Weight and Solubility Studies of Some Novel Polyaniline Induced by Montmorillonite clay Called Maghnite-H+ (Algerian MMT)

“…Understanding these dramatic effects requires insight into chain growth kinetics and evolution of polymer molecular weight as a function of the experimentals conditions such as reaction time, amount of monomer ,solvant and amount of catalyst . While there are several reports on the molecular weight of different form of polyaniline(PANI-ES ,PANI-EB and PANI-HCl ) using gel permeation chromatography [27]. Polyaniline is a conducting polymer with a complex chemistry involving both electron and proton exchange .A distinctive feature of polyaniline among the conducting polymers is that its conductivity is not only controlled by the degree of chain oxidation or number of repetitive units but also by the level of protonation.…”