Synthesis and Characterization of Alkyl-Substituted Polyaniline by Using Ammonium Persulfate as both Oxidant and Dopant

2015 ◽  
Vol 1096 ◽  
pp. 147-155
Author(s):  
Xin Li ◽  
Mei Xiang Wan ◽  
Cong Ju Li
Keyword(s):  
Self Assembly ◽  
Ph Value ◽  
Ammonium Persulfate ◽  
Polymerization Process ◽  
Synthesis And Characterization ◽  
Polymerization Time ◽  
Reaction Solution ◽  
Alkyl Substitution ◽  
Decreasing Ph

Poly (o-toluidine) (POT), poly (m-toluidine) (PMT) and poly (p-toluidine) (PPT) were chemically oxidized by ammonium persulfate (APS) as both oxidant and dopant through a very simple self-assembly process. The structure characterizations by elemental analysis, XPS and FTIR demonstrated that APS is served as both oxidant and dopant due to the proton acid produced during polymerization, which is proven by the decreasing pH value of the reaction solution along with the increase of polymerization time. Besides, the influences of the alkyl-substitution position on the molecular structure, polymerization process, morphology and electrical properties are also discussed.

Synthesis and Characterization of Poly(o-chloroaniline) Micro/Nanostructures in a Novel Redox System

2015 ◽  
Vol 1120-1121 ◽  
pp. 215-219
Author(s):  
Meng Zhang ◽  
Dong Hao Sun ◽  
Ying Wang
Keyword(s):  
Thermal Stability ◽  
Ascorbic Acid ◽  
Self Assembly ◽  
Redox System ◽  
Ammonium Persulfate ◽  
Polymerization Rate ◽  
Molar Ratio ◽  
Synthesis And Characterization ◽  
Assembly Process

In a redox system containing ascorbic acid(AA) and ammonium persulfate(APS), Poly(o-chloroaniline)(POC) micro/nanostructures including nanoparticles, nanofibers, and microspheres were successfully prepared through a self-assembly process in absence of additional template. The results indicated that POC morphologies were strongly affected by the molar ratio of o-chloroaniline(OC) to ascorbic acid([OC]/[AA]) and the reaction temperature. The fibrillar or spherical POC micro/nanostructures could be dynamically controlled in the AA/APS redox system by changing the polymerization rate of OC monomers. Thermogravimetric analysis showed that the POC nanofibers had a better thermal stability than POC microspheres. The conductivity of POC nanofibers could reach 5.5×10-3S/cm, while the microspheres were almost insulators.

Preparation and Characterization of Polyaniline Nanotubes Doped with Different Acid

2013 ◽  
Vol 401-403 ◽  
pp. 663-666
Author(s):  
Xue Lian Bai ◽  
Jian Ting Mei ◽  
Zhong Guo Mu ◽  
Yun Bai
Keyword(s):  
Acetic Acid ◽  
Self Assembly ◽  
Ammonium Persulfate ◽  
Tetraacetic Acid ◽  
X Ray Diffraction ◽  
X Ray ◽  
Structure And Property ◽  
Assembly Method ◽  
Polyaniline Nanotubes

Polyaniline (PANI) nanotubes were synthesized separately using amino acetic acid (AA), ethylenediamine tetraacetic acid (EDTA), oxalic acid (OA) as dopant and ammonium persulfate (APS) as oxidant by a self-assembly method. SEM, TEM,FTIR and X-ray diffraction (XRD) and applying the 4 probes method characterized the morphology, structure and property of the product. It was found that nanotubes morphology were synthesized when the [Aci/[A ratio is 1:2.The room template conductivity of the products were studied.

Synthesis and characterization of novel dibenz[a,c]anthracenedicarboxythioimides: the effect of thionation on self-assembly

RSC Advances ◽  
2016 ◽  
Vol 6 (82) ◽  
pp. 78784-78790 ◽  
Author(s):  
Katie. M. Psutka ◽  
Kenneth E. Maly
Keyword(s):  
Self Assembly ◽  
Liquid Crystalline ◽  
Synthesis And Characterization ◽  
Crystalline Phases ◽  
Liquid Crystalline Phases ◽  
Self Association

The effect of thionation on the formation of columnar liquid crystalline phases of dibenzanthracenedicarboximides as well as their self-association in solution is described.

Preparation and Characterization of Kenaf-Based Superabsorbent Polymers

2011 ◽  
Vol 183-185 ◽  
pp. 1812-1816
Author(s):  
Dan Wang ◽  
Zhan Qian Song ◽  
Shi Bin Shang ◽  
Zhan Jun Wang ◽  
Myoung Ku Lee
Keyword(s):  
Aqueous Solution ◽  
Acrylic Acid ◽  
Graft Copolymerization ◽  
Ph Value ◽  
Crosslinking Agent ◽  
Ammonium Persulfate ◽  
Deionized Water ◽  
Superabsorbent Polymers ◽  
Saline Solutions

Novel kenaf-based superabsorbent polymers (SAPs) were prepared by grafting acrylic acid (AA) and acrylamide (AM) onto kenaf cellulose. Graft copolymerization was carried out in aqueous solution using N, N’-methylenebisacrylamide (NMBA) as crosslinking agent and sodium bisulfite (NaHSO3) and ammonium persulfate ((NH4)2S2O8) as initiator. The SAPs so obtained were examined by SEM. The absorbency of SAPs consists of different kenaf cellulose in deionized water, saline solutions and different pH value solutions were investigated.

scholarly journals Synthesis and characterization of poly(amino acid methacrylate)-stabilized diblock copolymer nano-objects

2015 ◽  
Vol 6 (10) ◽  
pp. 1805-1816 ◽  
Author(s):  
Vincent Ladmiral ◽  
Alexandre Charlot ◽  
Mona Semsarilar ◽  
Steven. P. Armes
Keyword(s):  
Amino Acid ◽  
Diblock Copolymer ◽  
Michael Addition ◽  
Self Assembly ◽  
Building Blocks ◽  
Synthesis And Characterization

Two amino acid methacrylates prepared via Michael addition are used as building blocks to prepare novel diblock copolymer nano-objects via polymerisation-induced self-assembly.

scholarly journals Synthesis and characterisation of non-ionic AB-diblock nanoparticles prepared by RAFT dispersion polymerization with polymerization-induced self-assembly

RSC Advances ◽  
2016 ◽  
Vol 6 (33) ◽  
pp. 28130-28139 ◽  
Author(s):  
Yiwen Pei ◽  
Kevin Jarrett ◽  
Leonardo Gutierrez Garces ◽  
Martin Saunders ◽  
Jean-Philippe Croue ◽  
...  
Keyword(s):  
Self Assembly ◽  
Soft Matter ◽  
Dispersion Polymerization ◽  
Synthesis And Characterization

The RAFT-PISA synthesis and characterization of non-ionic soft matter nanoparticles is described.

A self-assembly method for the fabrication of a three-dimensional (3D) polypyrrole (PPy)/poly(3,4-ethylenedioxythiophene) (PEDOT) hybrid composite with excellent absorption performance against electromagnetic pollution

2016 ◽  
Vol 4 (1) ◽  
pp. 82-88 ◽  
Author(s):  
Fan Wu ◽  
Mengxiao Sun ◽  
Wanchun Jiang ◽  
Kun Zhang ◽  
Aming Xie ◽  
...  
Keyword(s):  
Self Assembly ◽  
Hybrid Composite ◽  
Three Dimensional ◽  
Synthesis And Characterization ◽  
Assembly Method ◽  
Electromagnetic Absorption ◽  
Absorption Performance ◽  
Electromagnetic Pollution

Here we report the synthesis and characterization of a 3D-PPy/PEDOT composite, and examine its electromagnetic absorption (AE) performance.

Synthesis and characterization of [Cu(salen)]2 coordination nano-assembly by a green and simple method

2017 ◽  
Vol 232 (6) ◽  
Author(s):  
Maryam Mohammadikish ◽  
Fatemeh Bagheri
Keyword(s):  
Hydrothermal Synthesis ◽  
Reaction Temperature ◽  
Self Assembly ◽  
Synthesis And Characterization ◽  
Simple Method ◽  
Synthesis Route ◽  
Experimental Parameters ◽  
Temperature Time

AbstractHierarchical structured microplates consisting of nanoparticles were grown based on a self-assembly approach via a hydrothermal synthesis route without using any additive. Experimental parameters, such as reaction temperature, time and solvent play crucial roles in determining the morphology of final product. The nanoscale shape and macroscopically assembled architecture of [Cu(salen)]

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