Preparation and characterization of microcapsules containing ammonium persulfate as core by in situ polymerization

2014 ◽  
Vol 249 ◽  
pp. 27-33 ◽  
Author(s):  
Mingming Zuo ◽  
Tianqing Liu ◽  
Jingjing Han ◽  
Yuanchun Tang ◽  
Feng Yao ◽  
...  
Keyword(s):  
In Situ Polymerization ◽  
Ammonium Persulfate

scholarly journals Synthesis and Characterization of Polypyrrole (PPy) by In-situ Polymerization Technique

2020 ◽  
Vol 6 (2) ◽  
pp. 686-688
Author(s):  
Phalak Mrunalini ◽  
Rajendra Waghulade ◽  
Yogesh Toda
Keyword(s):  
In Situ Polymerization ◽  
Ammonium Persulfate ◽  
Sem Analysis ◽  
X Ray Diffraction ◽  
X Ray ◽  
Nano Powder ◽  
Infra Red ◽  
Granular Morphology

This work reports synthesize of polypyrrole nano powder by chemical in-situ polymerization of pyrrole in aqueous solution and ammonium persulfate solution which acts as oxidant. It is characterized by X-ray diffraction (XRD), Fourier infra-red spectroscopy (FTIR) and scanning electron microscopy (SEM). The XRD spectrum reveals that the materials are amorphous in nature. FTIR analysis confirms that all peaks are the main characteristic of PPy. SEM analysis showed that the powder has a uniform granular morphology and the size varies from ∼500 nm to 1 μm. The micrograph of polypyrrole reveals the presence of globular particles. The formed particles are irregular in nature. The results show that the fibers are chemically formed as spherical nanostructures.

Synthesis and Characterization of PANI/Ferric Chloride Composite for Fabrication of Electrodes in Supercapacitor

2013 ◽  
Vol 768 ◽  
pp. 334-337 ◽  
Author(s):  
Deebankarthikeyan Sivalingam ◽  
Hemalatha Elangovan ◽  
Manikandan Subramanian ◽  
Senthil Kumar Kandasamy ◽  
Murugesan Govindasamy
Keyword(s):  
Ferric Chloride ◽  
In Situ Polymerization ◽  
Ammonium Persulfate ◽  
Supercapacitor Application ◽  
Vis Spectroscopy ◽  
Doped Polyaniline ◽  
Polymerization Method ◽  
Hcl Medium

The main objective of this work is to synthesize polyaniline/ferric chloride composite and to measure the conductivity of the as prepared composite. And also, to analyze the ability of using Ferric Chloride doped polyaniline as an electrode material for the fabrication of supercapacitor application. By in-situ polymerization method, polyaniline in pure form and doped form with the ferric chloride were synthesized using ammonium persulfate as initiator in HCl medium. Polyaniline nanoparticles and its composite are characterized by UV-Vis spectroscopy, FTIR, XRD and Conductivity meter.

Synthesis and Characterization of the PANI/ITO Conducting Nanocomposites

2010 ◽  
Vol 663-665 ◽  
pp. 542-545 ◽  
Author(s):  
Bing Jie Zhu ◽  
Xin Wei Wang ◽  
Mei Fang Zhu ◽  
Qing Hong Zhang ◽  
Yao Gang Li ◽  
...  
Keyword(s):  
Doping Concentration ◽  
In Situ Polymerization ◽  
Synthesis And Characterization ◽  
Conductivity Measurements ◽  
X Ray Diffraction ◽  
X Ray ◽  
Maximum Conductivity ◽  
Scanning Electron

The PANI/ITO conducting nanocomposites have been synthesized by in-situ polymerization. The obtained nanocomposites were characterized by X-ray diffraction pattern, scanning electron microscopy and Fourier transform infrared. Electrical conductivity measurements on the samples pressed into pellets showed that the maximum conductivity attained 2.0 ± 0.05 S/cm for PANI/ITO nanocomposites, at ITO doping concentration of 10 wt%. The results of the present work may provide a simple, rapid and efficient approach for preparing PANI/ITO nanocomposites.

Study on the Synthesis and Characterization of PANi/Nano-CeO2 Composites

2007 ◽  
Vol 124-126 ◽  
pp. 287-290 ◽  
Author(s):  
Fei Liu ◽  
Yong Jun He ◽  
Jeung Soo Huh
Keyword(s):  
In Situ Polymerization ◽  
Solid Phase ◽  
Polymerization Reaction ◽  
Solid Phase Reaction ◽  
Phase Reaction ◽  
Vis Spectroscopy ◽  
Ft Ir ◽  
Average Size

The nano-CeO2 was synthesized by two-step solid-phase reaction. The image of TEM showed that nano-CeO2 with an average size of about 70 nm. The series of polyaniline/nano-CeO2 composites with different PANi: CeO2 ratios were prepared by in-situ polymerization in the presence of hydrochloric acid (HCl) as dopant by adding nano-CeO2 into the polymerization reaction mixture of aniline. The composites obtained were characterized by FT-IR and UV-vis spectroscopy analysis. The FT-IR spectra of nanocomposites indicate different blue-shifts, attributed to C–N stretching mode for benzenoid unit. The UV-vis spectra of nanocomposites display einstein-shifts compared with PANi at 620nm. The conductivity properties of the composites are also changed compare to the pure PANi. These results suggest that the interactions between the polymer matrix and nanoparticles take place in polyaniline/nano- CeO2 composites.

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