Kinetic studies of the chemical polymerization of substituted aniline in aqueous solutions and characterization of the polymer obtained Part 1. 3-Chloroaniline

Sayyah, S. M.; El-Khalek, Ahmed Abd; Bahgat, A. A.; El‐Salam, H. M. Abd

doi:10.1002/1097-0126(200102)50:2<197::aid-pi606>3.0.co;2-1

Cited by 42 publications

(20 citation statements)

References 29 publications

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“…The þ ve charge present on the terminal amino group may be killed by solvation process [26] as follows: The þ ve charge present on the terminal amino group may be killed by solvation process [26] as follows:…”

Section: Figure 11mentioning

confidence: 99%

Aqueous Oxidative Chemical Polymerization of N-Methylaniline in Acid Medium and Characterization of the Obtained Polymer

Sayyah

El‐Salam

2003

International Journal of Polymeric Materials

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The oxidative chemical polymerization of N-methylaniline was studied in hydrochloric acid solution using sodium dichromate as oxidant at 5 + C under nitrogen atmosphere. The effect of hydrochloric acid, sodium dichromate and monomer concentration on the polymerization reaction was investigated. The order of reaction with respect to hydrochloric acid, sodium dichromate and monomer concentration was 0.816, 0.735 and 7 0.83 respectively. Also, the effect of temperature on the polymerization rate was studied and the apparent activation energy of this polymerization reaction was found to be 1.999 Â 10 4 J=mol. The characterization of the obtained polymer sample at the optimum conditions was carried out by IR, UV-visible, 1 H-NMR, X-ray diffraction, electron microscope and thermogravimetric analysis. The ac conductivity of the obtained polymer samples was measured and the highest values were found for the samples prepared at hydrochloric acid, sodium dichromate and monomer concentrations of 0.200, 0.0094 and 0.1869 mol=L respectively at 5 + C.

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Section: Figure 11mentioning

confidence: 99%

Aqueous Oxidative Chemical Polymerization of N-Methylaniline in Acid Medium and Characterization of the Obtained Polymer

Sayyah

El‐Salam

2003

International Journal of Polymeric Materials

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“…Its anodic oxidation gives benzoquinone as a product, but no film formation was reported. Meta ‐Aminophenol was studied chemically in acidic aqueous medium by Sayyah et al,33 yielding a conductive polymer with conductivity ≈10 −3 S cm −1 , and electrochemically in acetonitrile34 and in acidic aqueous medium 32. The obtained polymer film is nonconductive because of the presence of an activated group in this position, which leads to a double electrophilic substitution that gives a heavily crosslinked polymer structure: the crosslinked nature of this polymer prevents electronic conjugation, making it nonconductive 35.…”

Section: Introductionmentioning

confidence: 99%

Electropolymerization kinetics of o‐aminophenol and characterization of the obtained polymer films

Sayyah¹,

El-Rabiey²,

El‐Rehim³

et al. 2006

J of Applied Polymer Sci

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Poly(ortho-aminophenol) has been synthesized electrochemically from a previously deoxygenated acid medium. The initial rate of electropolymerization reaction on platinum electrode is small and the rate law is: Rate ϭ k 2 [D] 0.50 [HCl] 1.125 [M] 1.29 . The apparent activation energy (E a ) was found to be 68.63 kJ mol Ϫ1 . The polymer films obtained have been characterized by cyclic voltammetry, X-ray diffraction, elemental analysis, TGA, scanning electron microscopy, 1 H NMR, UV-visible, and IR spectroscopy. The mechanism of the electrochemical polymerization reaction has been discussed.

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“…The kinetics of the chemical polymerization of some substituted polyaniline in aqueous solution and characterization of the obtained polymers by IR, UV‐visible, X‐ray, electron microscopy, TGA–DTA analysis and ac conductivity were previously investigated by Sayyah et al35–39 To the best of our knowledge, no study reported in the literature has investigated the rate of the electropolymerization reaction, reaction orders with respect to different electropolymerization parameters such as current density, monomer concentration, and acid concentration. Also, thermodynamic activation parameters such as enthalpy (Δ H *), entropy (Δ S *), and activation energy ( E a ) for the electrochemical polymerization were not reported.…”

Section: Introductionmentioning

confidence: 99%

Electropolymerization of pyrrole and characterization of the obtained polymer films

Sayyah

El‐Rehim

El-Deeb

2003

J of Applied Polymer Sci

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Electrochemical oxidative polymerization of pyrrole on platinum electrode in acid medium was carried out. Different reaction parameters were investigated such as current density, acid concentration, monomer concentration, and temperature with duration of time. The orders of the electropolymerization reaction were found to be 1.3, 1.26, and 1.2 with respect to current density, acid concentration, and monomer concentration, respectively. The apparent activation energy was found to be 38.3 kJ mol Ϫ1 . The obtained polymer films were characterized by 1 H-NMR, elemental analysis, thermogravimetric analysis, and cyclic voltammetry. The mechanism of the electrochemical polymerization reaction was also discussed. The surface morphology of the obtained polymer film was characterized by X-ray diffraction and scanning electron microscopy.

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Kinetic studies of the chemical polymerization of substituted aniline in aqueous solutions and characterization of the polymer obtained Part 1. 3-Chloroaniline

Cited by 42 publications

References 29 publications

Aqueous Oxidative Chemical Polymerization of N-Methylaniline in Acid Medium and Characterization of the Obtained Polymer

Aqueous Oxidative Chemical Polymerization of N-Methylaniline in Acid Medium and Characterization of the Obtained Polymer

Electropolymerization kinetics of o‐aminophenol and characterization of the obtained polymer films

Electropolymerization of pyrrole and characterization of the obtained polymer films

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