A new approach to soluble polyaniline and its copolymers with toluidines

Abstract

Homopolymers of aniline, toluidines and their copolymers were synthesized by chemical oxidative polymerization using different ratios of monomers in the feed in H 2 SO 4 medium. The synthesized polymers were characterized by employing Fourier transform infrared, UV-visible, proton nuclear magnetic resonance, X-ray diffraction techniques for understanding the details of the structure of the synthesized polymers. Morphological, thermal, and electrical conductivity of the as synthesized polymers were also studied by employing scanning electron microscopy, thermogravimetric analysis, and dc electrical conductivity, respectively. From the SEM images rod shaped nanoparticles were observed in PANI and spherical shaped nanoparticles were observed for copolymers. A three-step thermal degradation was observed for all the polymers. The electrical conductivities of the copolymers were less compared with PANI, and at higher temperature the conductivities of all the polymers were more or less same. It was observed that yield and intrinsic viscosity of copolymers are not regularly dependant on monomer concentration in the feed. The copolymers show better solubility but lower conductivity than PANI. Properties of homopolymers and copolymers are also pointed out.

Synthesis and characterization of poly (m-toluidine)-silver halide nanocomposites: thermal properties and its conducting behavior

“…A broad band at 2θ = 25.19 is due to the amorphous nature of the PMT chains. [47] Other six sharp peaks at 2θ = 27.78, 32.1, 46.1, 54.7, 57.38, and 76.78 could be assigned to the characteristic diffraction peaks of AgCl (111), (200), (220), (311), (222), and (420) facets, for the Ag-PMT nanocomposites and that are in good agreement with reported data (JCPDS no. 06-0480).…”

Synthesis, Characterization and Studies of PANI-MMT Nanocompoisites

“…The peaks observed at 500-600 cm -1 , 1067 cm -1 are due to the presence of clay in the co mposite. The peak assignments are listed in the table [22][23][24][25]. The spectrum showed characteristic peaks of polyaniline and clay at 1067 and 1430 cm -1 , the IR spectrum for the different co mposites is shown in the figure 1.…”

Poly(aniline-co-o-toluidine):poly(styrene sulfonic acid) nanocolloidal self assembled multilayer thin films as a hole transport layer in organic solar cells

“…J. Bae et al suggested that higher wt% of PSS decreases the crystallinity of the PANI particles [35]. As well as Swaruparani et al also suggested that introduction of methyl group on an aniline unit increases the intermolecular chain spacing and amorphousness as compared with the pure PANI [36]. The above results specify that introduction of higher wt% of PSS and methyl group of o-toludine are hindering the exhibition of typical PANI crystalline phase.…”