نتایج جستجو برای: polyaniline cobaltsulphate

تعداد نتایج: 2969  

Fatemeh Aghazadeh Maryam Aghazadeh

Polyaniline-cobalt nanocomposites were synthesized bysalt of cobalt with ammonium persulphate as an oxidizing agent and aniline.This paper reports on hydrothermal technique using for synthesis and size control of cobalt nanoparticles in the composite bridge is aniline. Electrical conductivity of polyaniline alone in acidic environments, without and with cobalt nanoparticles measured.Increasing ...

Journal: :journal of physical & theoretical chemistry 2012
m. h. fekri m. banimahd keivani m. darvishpour h. banimahd keivani

in this research, the removal of malachite green dye from textile wastewaters using polyaniline coated onto sawdust (pani/sd) has been investigated. ammonium peroxodisulphate was used as chemical oxidant for polymerization of polyaniline directly on the surface of sawdust. the effects of some important parameters such as ph, initial concentration, sorbent dosage, exposure time and temperature o...

Journal: :Macromolecular bioscience 2017
Darshan Gh Dexu Kong Julien Gautrot Shyam Kumar Vootla

Conductive polymers are interesting materials for a number of biological and medical applications requiring electrical stimulation of cells or tissues. Highly conductive polymers (polypyrrole and polyaniline)/Antheraea mylitta silk fibroin coated fibers are fabricated successfully by in situ polymerization without any modification of the native silk fibroin. Coated fibers characterized by scann...

2015
Fei Xiao Shengxiong Yang Zheye Zhang Hongfang Liu Junwu Xiao Lian Wan Jun Luo Shuai Wang Yunqi Liu

We reported a scalable and modular method to prepare a new type of sandwich-structured graphene-based nanohybrid paper and explore its practical application as high-performance electrode in flexible supercapacitor. The freestanding and flexible graphene paper was firstly fabricated by highly reproducible printing technique and bubbling delamination method, by which the area and thickness of the...

2009
Han Chen Jingyuan Chen Koichi Aoki Toyohiko Nishiumi

A cathodic voltammetric wave was observed in an aqueous suspension of mono-dispersed, spherical polyaniline-coated polystyrene particles, whereas no anodic wave was detected. This irreversibility was common to particles with eight different diameters ranging from 0.2 to 7.5 μm. Such irreversibility cannot be found at polyaniline-coated electrodes, and thus is a property of the dispersion of pol...

2015
X. P. Chen J. K. Jiang Q. H. Liang N. Yang H. Y. Ye M. Cai L. Shen D. G. Yang T. L. Ren

We present a first-principles density functional theory study focused on how the chemical and electronic properties of polyaniline are adjusted by introducing suitable substituents on a polymer backbone. Analyses of the obtained energy barriers, reaction energies and minimum energy paths indicate that the chemical reactivity of the polyaniline derivatives is significantly enhanced by protonic a...

Journal: :E3S web of conferences 2021

The driving idea and the main objective of this synthetic work is study physicochemical factors such as dielectric constant solvent, polarizability chains Gap energy conductive polymers, these characteristics condition their properties. electrical electrochemical. We focused our on polyaniline, two methods are presented: chemical polymerization electropolymerization with emphasis theoretical as...

2006
U S SAJEEV C JOSEPH MATHAI S SARAVANAN RAJEEV R ASHOKAN S VENKATACHALAM

Polyaniline is a widely studied conducting polymer and is a useful material in its bulk and thin film form for many applications, because of its excellent optical and electrical properties. Pristine and iodine doped polyaniline thin films were prepared by a.c. and rf plasma polymerization techniques separately for the comparison of their optical and electrical properties. Doping of iodine was e...

Journal: :Chemical communications 2006
Jyongsik Jang Jungseok Ha Byungkwon Lim

Monodisperse silica-polyaniline core-shell nanoparticles with an average diameter of 26 nm were synthesized by in-situ polymerisation of aniline monomers adsorbed on the silica surface through electrostatic interactions.

F. Sadeghvandi L. Saadat,

Conducting polymers, because of their special properties, are used to introduce conductive polymeric composites. Also, clays have recently been used for preparation of polymer composites with enhanced mechanical and thermal properties. The aim of this work is to study the synergetic effect of the co-presence of conducting polyaniline and montmorillonite in the polyethylene matrix. Polyethylene ...

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