Paper Information

Journal:   JOURNAL OF APPLIED RESEARCHES IN CHEMISTRY (JARC)   SPRING 2010 , Volume 4 , Number 13; Page(s) 83 To 91.
 
Paper: 

OPTIMIZATION CONDITION FOR THE SYNTHESIZE OF POLYANILINE NANOPARTICLES BY CHEMICAL OXIDATION POLYMERIZATION UNDER ULTRASONIC IRRADIATION AND INERT GAS

 
 
Author(s):  NAZARZADEH ZAREH E.*
 
* DEPARTMENT OF CHEMISTRY, FACULITY OF SCIENCE, URMIA UNIVERSITY, URMIA, IRAN
 
Abstract: 

The aim of this work is to synthesis a polyaniline with high conductivity by chemical oxidative polymerization under ultrasonic irradiation. The aniline chemical polymerization carried out by addition of initiator such an ammonium peroxydisulfate (APS) in aqueous medium under ultrasonic irradiation in inert atmosphere. The influence of synthesis conditions such as the duration of reaction time, concentration of the oxidant, concentration of HCl and presence of air atmospher or inert gas in the obtained polyaniline were investigated.The optimum conditions for the synthesis of polyaniline with better conductivity were determined. Our results demonstrate that polyaniline conductivity depends on the conditions such as, concentration of HCl, presence of oxygen in the reaction medium and monomer molar ration of the initiator. The optimum molar ration of the initiator to the monomer aniline is 2.5:2 .The electrical conductivity of polyaniline synthesis by optimized condition was 23.46 S/cm measured at -5 - 0°C. The obtained polyaniline characterized by FT-IR, UV-Vis, XRD, DSC and SEM.

 
Keyword(s): POLYANILINE, CONDUCTIVE POLYMERS, ULTRASONIC IRRADIATION, INERT GAS
 
References: 
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