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Abstract
Conductive polymers had been the topic of the large number of investigations during last decades because of their unique properties such as mechanochemical strength, electrical conductivity, corrosion and thermal stability. Maghnite-H+ is a montmorillonite sheet silicate clay, which exchanged with protons. Polyaniline (PANI), with unique electrical and optical properties, is a promising candidate for wide range of potential applications. So that, in the present paper we report: 1 -Synthesis of polyaniline by chemical polymerization of aniline using montmorillonite (Mag-H + ) as Protonic source. 2 - Different oxidant such as (K 2 S 2 O 8 , K 2 Cr 2 O 7 , CuCl 2 ). 3 - Characterization of different polyaniline by different technics. With these easy synthesis associated good solubility, thermal stability and high electrical conductivity.
Highlights
The FTIR spectra of the polyaniline salt (PANI-ES) and PANI-emeraldine base (EB) under the same conditions were shown in Figure-1 and Figure-2
The 1H-NMR spectra of the PANI-ES and PANI-EB polymers exhibit strongest sharp peak centered at 7 ppm and 7,8 ppm due to protons on phenylene and disubstituted phenylene units, the weak peak at 4.81 ppm and medium broad peak at 6.22 ppm due to (–NH– and –NH2) end group respectively, another broad peaks centered at 1,78 ppm and 8
Fig. 3: 1H NMR spectrum (300 MHz, CDCl3, Tetramethylsilane (TMS) was used as the internal standard) of polyaniline
Summary
In the recent year , polyaniline composite and nanocomposite suggest a great importance in the present nanotechnology, due to its easy synthesis ,low cost environmentally stability and high conductivity [1] These properties optical and electrical of polyaniline widen his application in several estate such as electronics devices (organo semi conductors, transistors),batteries and combustible piles .In many articles, preparation of polyaniline (PANI) soluble has been subjected [2] ,this very day, polymerization of aniline in montmorillonite(layered solid) by chemical methods have been reported [3]. Acid treatment of "Raw-Maghnite" causes a reduction in octahedral content (Al2O3) and resulted in an increase in the proportion of silica (SiO2) observed This polyaniline salt (PANI-ES) was synthesized by the chemical oxidation of aniline with potassium persulfate ( K2S2O8) , potassium dichromate (K2Cr2O7) or Silver chloride (CuCl2 ) , water and montmorillonite (Mag-H+ ). The result it's black solution ( polymer-solvent ) , after evaporation result a black powder it's (PANIES ),washed several times with water and methanol , where dried at 60oc for 48 h for characterization
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