AQUEOUS OXIDATIVE CHEMICAL POLYMERIZATION OF N-METHYLANILINE IN ACID MEDIUM AND CHARACTERIZATION OF THE OBTAINED POLYMER
Titel:
AQUEOUS OXIDATIVE CHEMICAL POLYMERIZATION OF N-METHYLANILINE IN ACID MEDIUM AND CHARACTERIZATION OF THE OBTAINED POLYMER
Auteur:
Sayyah, S. M. El-Salam, H. M. Abd
Verschenen in:
International journal of polymeric materials
Paginering:
Jaargang 52 (2003) nr. 11-12 pagina's 1087-1111
Jaar:
2003-11-01
Inhoud:
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 -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 1.999×104 J/mol. The characterization of the obtained polymer sample at the optimum conditions was carried out by IR, UV-visible, 1H-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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