Aniline to Polyaniline/silver nanocomposites via em ulsion po lymerizati on in th e presence of p-phe nylenedia mine

Deposition of me tal or metal oxide nan oparticles into a cond ucting poly mer matrix is an attractive area of science [۱]. The Polya niline/silver (PANI/Ag) nanocomposites have been accelerated in the presence of a few amount of p-phenylenediamine (PDA) in acidic media [۲,۳]. This study deals with the novel synthesis of PANI/A g nanohybr ids via em ulsion polymerization using PDA.Mate rials and m ethods:Ag n anoparticles were prepared as follow s: ۷.۵ mL of AgNO۳ solution (۰.۰۱ M) was add ed to ۲۲۵ mL deionized water with stirring. After ۱۰ min o f mixing, ۱۵ mL of ۲-m ercaptocarbo xylic acid solution (۰.۰۱ M) was added to the mixed solution and ۷.۵ mL of ۰.۰ ۱ M NaI solution was dripped into the mixed solution under vigorous stirring im mediately. After ۲۰ m in of further reaction, a light yellow solution of AgI nanoparticles was obtained. Then, (۰.۰۶ g, ۱.۰۶mmol)NaBH۴ as reducing reagent was ad ded to AgI colloid and the mixture was kept stirred for a nother ۳۰ min until A gI was thoroughly re duced and a light re d colloid of Ag nanoparticles can be obtained and then acidified with HCl to ۰.۱ N. Aniline ( ۰.۵۸۲ g, ۶ mmol), sodiu m dodecylbenzene sulfonate (۲۱.۷۸ g, ۶۰ mmol), PDA (۰.۰۰۶ g, ۰.۰۶ mmol) and ammonium peroxydisulfate (۱.۸۵۴ g, ۸ mmol) wer e added to the above c olloid. PA NI/Ag hybrid was prepared after ۴ h stirring a t room tem perature. Acetonitrile was then added to destroy micelles and precipitate the product.

کلیدواژه ها:

Poly aniline/silver ، Nanoparticles ، Nanoc omposites ، p -phenylene diamine.