Preparation and Property of a Composite of PPy/MMT/PMMA

2013 ◽  
Vol 631-632 ◽  
pp. 150-153
Author(s):  
Ji Wei Cai ◽  
Hai Jun Niu ◽  
Xu Duo Bai
Keyword(s):  
Loss Function ◽  
Oxidative Polymerization ◽  
Dissipation Factor ◽  
X Ray Diffraction ◽  
X Ray ◽  
Structures And Properties ◽  
Key Factor ◽  
Ft Ir ◽  
The Relationship ◽  
Polymerization Method

Polypyrrole/montmorillonite (PPy/MMT) particles were synthesized using an oxidative polymerization method. Then the particles were added into polymethyl methacrylate (PMMA) as additives to prepare PPy/MMT/PMMA composite. The structures and properties of the composite were characterized by FT-IR, TGA, X-ray diffraction spectroscopy, and four–probe machine. The relationship between content of PPy/MMT and conductivity was analyzed. The result shows that the amount of PPy/MMT is a key factor for improving the conductivity of composite. Furthermore, dynamic mechanical (DM) properties of composite were studied. When the PPy/MMT content reach 0.2% of composite, the storage modulus, loss function modulus, dissipation factor get highest values.

Structural and Optical Study of Chemically Synthesized Polyaniline

2015 ◽  
Vol 7 (1) ◽  
Author(s):  
R. K. Shukla ◽  
Susheel Kumar Singh ◽  
Akhilesh Tripathi
Keyword(s):  
Fourier Transform ◽  
Oxidative Polymerization ◽  
Ultra Violet ◽  
Optical Study ◽  
X Ray Diffraction ◽  
Chemical Oxidative Polymerization ◽  
X Ray ◽  
Ft Ir ◽  
Polymerization Method ◽  
Scanning Electron

Polyaniline (PANI) is synthesized by chemical oxidative polymerization method. The, characterization were made using XRD (X-ray diffraction), FT-IR (Fourier transform spectroscopy), UV -vis (ultra-violet visible spectrophotometer) technique which confirms the synthesis of the Polyaniline. The surface morphology of Polyaniline was studied with scanning electron microscope (SEM).

Synthesis, Structural, Morphological and I-V Characteristics of Polyaniline-MgCl Composite

2022 ◽  
Vol 1048 ◽  
pp. 141-146
Author(s):  
Madihally Nagaraja ◽  
Geetha Thippeswamy ◽  
Sushma Prashanth ◽  
Jayadev Pattar ◽  
Mahesh Hampapatna Mahesh
Keyword(s):  
Structural Analysis ◽  
Oxidative Polymerization ◽  
X Ray Diffraction ◽  
X Ray ◽  
Sem Micrographs ◽  
Morphological Studies ◽  
Current Voltage ◽  
Amorphous Nature ◽  
Diffraction Patterns ◽  
Polymerization Method

Composite of polyaniline-MgCl has been synthesized using oxidative polymerization method. Synthesized samples were characterized for structural analysis using FTIR and XRD. Morphological studies were carried by SEM micrographs. Current-Voltage (I-V) properties are obtained through Kiethly source meter. FTIR spectrum of polyaniline-MgCl composite indicates all the characteristic peaks of polyaniline. X-ray diffraction patterns represented the amorphous nature of polyaniline-MgCl composite. SEM micrographs confirmed the presence of MgCl particles in polyaniline matrix. I-V characteristics have shown the ohmic type behavior of polyaniline and polyaniline-MgCl composite.

scholarly journals Metal Complexes of π-Expanded Ligand (7): Syntheses, Structures and Properties of Pt(II) Complexes Containing the Isomeric 1- and 2-Alkyliminomethyl Pyrene Ligands

Crystals ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 476 ◽  
Author(s):  
Xuan-Dien Luong ◽  
Xuan-Truong Nguyen
Keyword(s):  
Molecular Structure ◽  
Planar Geometry ◽  
X Ray Diffraction ◽  
X Ray ◽  
Pt Complex ◽  
Physico Chemical ◽  
Clear Explanation ◽  
Square Planar ◽  
Structures And Properties ◽  
The Relationship

A [O,N] bidentate π-expanded ligand system, (E)-1-(n-octylimino)methylpyren-2-ol (2), was newly synthesized via a six-step synthesis from pyrene. The ligand 2 reacts with [PtCl2(PhCN)2] in chlorobenzene and the presence of a base at reflux for 2 h under the formation of (2(Pt)) complex with a yield of 70%. The molecular structure of (2(Pt)), studied by common spectroscopic methods and X-ray diffraction, shows a square planar geometry with a trans-configuration of the ligands. The molecular structure, absorption spectra, electrochemical properties, and phosphorescence characteristics of the (2(Pt)) complex are discussed, emphasizing the comparison with those of the previously reported Pt complex (1(Pt)) containing the isomeric ligands of 2, (E)-2-(n-octylimino)methylpyren-1-ol. The DFT calculations of the two Pt complexes are carried out and exhibit a clear explanation of the relationship between their physico-chemical characteristics.

scholarly journals Spectroscopy and Conductivity Studies of Polyvinyl Alcohol (PVA)/Polypyrrol (Ppy) Nanocomposite with Various Chloride Metals to Improved Properties of the Polymers

2019 ◽  
Vol 16 (1) ◽  
pp. 55-63
Author(s):  
Naglaa Shahin ◽  
Reham Kamal Abd El Hamid
Keyword(s):  
Polyvinyl Alcohol ◽  
Oxidative Polymerization ◽  
Conductivity Measurement ◽  
Charge Carriers ◽  
X Ray Diffraction ◽  
Chemical Oxidative Polymerization ◽  
Metal Chlorides ◽  
X Ray ◽  
Polymerization Method ◽  
Transition Electron

Polyvinyl alcohol- polypyrrole (PVA-PPy) nanocomposites with metal chlorides (FeCl3, NiCl2, CuCl2 and ZnCl2) have been synthesized by chemical oxidative polymerization method. These synthesized nanocomposites are characterized by using FTIR, X-ray diffraction, Transition electron microscope (TEM) and Conductivity measurement. TEM exhibit that all of the composites have uniform sizes and morphologies.  The diameter of PVA/PPy nanocompsite is 58nm when the metals added to the PVA/PPy the diameters becomes smaller. The variation of electrical conductivity (log ?) with 1000/T for PVA/PPy nanocomposite with metal chlorides revealed that the increase in conductivity s at temperature (393K) with added metals can be attributed to the creation of induced charge carriers in PVA/PPy matrix

Synthesis and Characterization Polyaniline/Cobalt Oxide Nanocomposite by Chemical Oxidation Method

2018 ◽  
Vol 1 (1) ◽  
pp. 9-20 ◽  
Author(s):  
M Haridevi ◽  
S Prabu ◽  
M Lakshmi Devi ◽  
E Bhakya Lakshmi ◽  
K Mohanraj ◽  
...  
Keyword(s):  
Cobalt Chloride ◽  
Uv Light ◽  
Low Cost ◽  
Oxidative Polymerization ◽  
Chemical Oxidation ◽  
X Ray Diffraction ◽  
Chemical Oxidative Polymerization ◽  
Photo Degradation ◽  
X Ray ◽  
Polymerization Method

The Co3O4-PANI nanocomposites has been synthesized by chemical oxidative polymerization method using cobalt chloride. It is a simple and low cost method to prepare nanocomposite. The prepared samples were characterized by using Scanning Electron Microscope (SEM), X-ray diffraction (XRD) and Fourier Transform Spectroscopy (FTIR) to get surface morphology, idea of getting particles of nano sized range so that further characterization can be done, to study the net surface charge of the nanoparticles by Zeta potential, photoluminescence of synthesized nanocomposite and measure photocatalytic activity of the synthesized nanomaterials was successfully tested for photo degradation of dye under UV light were studied

Synthesis and Microwave Absorption Characteristics of Polyaniline

2013 ◽  
Vol 327 ◽  
pp. 53-57 ◽  
Author(s):  
Ding Guo Li ◽  
Wen Hua Lu ◽  
Cong Chen ◽  
Wei Rao ◽  
Yong Hong Xiong
Keyword(s):  
Microwave Absorption ◽  
Oxidative Polymerization ◽  
Ammonium Persulfate ◽  
Network Analyzer ◽  
X Ray Diffraction ◽  
Infrared Spectrophotometer ◽  
Ft Ir ◽  
Hcl Concentration ◽  
Polymerization Method ◽  
Absorption Characteristics

This paper aims at reporting the synthesis and microwave absorption characteristics of polyaniline (PANI). The PANI nanoparticles were synthesized by chemical oxidative polymerization method with ammonium persulfate ((NH4)2S2O8, APS) as oxidant and hydrochloric acid (HCl) for protonation of aniline. For APS/aniline mol ratio of 1, HCl concentration of 1 mol/L, reaction temperature of 5°C, the reaction time of 6h, the obtained PANI exhibits the highest value（30.9 S·cm-1）of the electrical conductivity. The structure and morphology of PANI were studied by X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectrophotometer (FT-IR), ultraviolet-visible spectrophotometer (UV-Vis) analysis ways. Microwave absorbing performances were investigated using wave-guide method with vector network analyzer in 2–18 GHz. The results showed that there is a maximum absorption peak with RL= -12.63dB at 13.61GHz，the value of RL ≤−10 dB is maintained from 11.38GHz to 18GHz for the sample of the thickness for 2mm.

scholarly journals Synthesis and Characterization of Polyaniline-Based Polymer Nanocomposites as Anti-Corrosion Coatings

Coatings ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 653
Author(s):  
Francisco R. Rangel-Olivares ◽  
Elsa M. Arce-Estrada ◽  
Román Cabrera-Sierra
Keyword(s):  
Polymer Nanocomposites ◽  
Electrochemical Impedance ◽  
Oxidative Polymerization ◽  
Open Circuit ◽  
Degree Of Crystallinity ◽  
X Ray Diffraction ◽  
Corrosion Properties ◽  
X Ray ◽  
Hydrochloric Acid Medium ◽  
Ft Ir

Polymer nanocomposites of polyaniline (PANI)-based metal oxides (SiO2, CeO2, and TiO2A) were synthesized by in situ chemical oxidative polymerization by rapid mixing in a hydrochloric acid medium to evaluate and compare their performance as anti-corrosion coatings on commercial 1018 steel in a 3.5% NaCl medium. The anti-corrosion coatings were developed by dispersing synthesized nanocomposites on an alkydalic resin (AR) for their subsequent electrochemical characterization. X-ray diffraction (XRD) analyses show that PANI has a certain degree of crystallinity in its structure. The incorporation of metal oxide (MO) nanoparticles (NPs) into the polymer matrix was confirmed by scanning electron microscopy and energy-dispersive X-ray spectroscopy (SEM-EDS) analyses, while the interaction of nanoparticles with PANI was proven by Fourier transform infrared (FT-IR) and ultraviolet-visible (UV-vis). Thermogravimetric analysis (TGA) reveals that nanoparticles infer greater resistance to the thermal decomposition of PANI. Finally, the use of open circuit potential (OCP) study, Tafel curves, and electrochemical impedance spectroscopy (EIS) showed that coatings made with TiO2A NPs exhibit the best anti-corrosion properties as compared to those synthesized with SiO2 and CeO2 NPs.

Studies on Polyaniline/Silver Molybdate Nanocomposites

2014 ◽  
Vol 13 (01) ◽  
pp. 1450002 ◽  
Author(s):  
K. Jacinth Mispa ◽  
P. Subramaniam ◽  
R. Murugesan
Keyword(s):  
Oxidative Polymerization ◽  
Hydrothermal Process ◽  
Photoluminescence Spectra ◽  
X Ray Diffraction ◽  
X Ray ◽  
Silver Molybdate ◽  
Visible Spectra ◽  
Ft Ir ◽  
Uv Visible

Silver molybdate nanoparticles were successfully prepared by the hydrothermal process. Polyaniline–silver molybdate nanocomposites were prepared by in situ chemical oxidative polymerization technique. Silver molybdate nanoparticles and the polymer samples were characterized by conductivity studies, Fourier transform infrared spectra (FT-IR), UV-visible spectra, photoluminescence spectra, X-ray diffraction (XRD), scanning electron microscopy (SEM) and thermogravimetric analysis (TGA). The electrical conductivity of PANI- Cl - increases when doped with silver molybdate nanoparticles and follows the percolation threshold.

Preparation and Property of Hydrophobic Modified Guar Gum Thickener

2013 ◽  
Vol 631-632 ◽  
pp. 260-264
Author(s):  
Ying Su ◽  
Yi Ding Shen ◽  
Xiao Juan Lai ◽  
Xiao Rong Wang
Keyword(s):  
Thermal Stability ◽  
Heat Resistance ◽  
Guar Gum ◽  
Suspension Polymerization ◽  
X Ray Diffraction ◽  
X Ray ◽  
Ft Ir ◽  
Polymerization Method ◽  
Long Chain ◽  
Better Than

The modified guar gum was synthesized with guar gum as material and bromododecane as etherifying agent by suspension polymerization method. The solution and gel of the modified guar gum were also prepared. The structure and the property of the modified guar gum were analysized by Fourier transform infrared spectrum (FT-IR), X-ray diffraction (XRD) and thermogravimetric analysis (TGA). The heat resistance and the viscoelasticity modulus of the gel were also researched by rheometer. The results of FT-IR and XRD show that the hydrophobic long chain has been introduced into the guar gum successfully. TGA indicates that the modified guar gum has higher thermal stability. The rheology tests reflect that with different temperature conditions, the shear viscosity, the viscoelasticity modulus of the gel and the heat resistance of the modified guar gum are both better than that of the unmodified guar gum. The modified guar gum can be used as thickener of fracturing fluid, and it can reduce its amount.

Thermal Degradation Behavior of Polyaniline in Polyaniline/Tunsten Carbide Composite

2012 ◽  
Vol 581-582 ◽  
pp. 719-722
Author(s):  
Hui Huang ◽  
Ren Chun Fu ◽  
Zhong Cheng Guo
Keyword(s):  
Thermal Treatment ◽  
Oxidative Polymerization ◽  
Chain Scission ◽  
Ammonium Persulfate ◽  
X Ray Diffraction ◽  
Chemical Oxidative Polymerization ◽  
X Ray ◽  
Thermal Degradation Behavior ◽  
Ft Ir ◽  
Ft Raman

Polyaniline/tungsten carbide (PANI/WC) composite was synthesized by chemical oxidative polymerization of aniline using ammonium persulfate as the oxidant and thermal treated in air at 150°C, 250°C, 350°C and 450°C to 2 hours. The changes of structure, crystalline and conductivity were investigated by Fourier Transformed Infrared (FT-IR), Fourier Transformed Raman (FT-Raman), X-Ray Diffraction (XRD) and four-probe technique. The results showed that PANI/WC composite showed much-improved thermal stability compared to pure PANI. But the conductivity of PANI/WC is reduced to some extent (1.73 S/cm, the conductivity is reduced by about 82%) after thermal treated at 250°C, and dropped by 6 orders of magnitude (3.25×10-6S/cm) at 350°C. This may be explained by that only a fraction of dopant losses during thermal treatment at 250°C, but after thermal treatment at 350°C, along with cross-linking, chain scission and oxygen, resulting in destruction of crystal structure, decrease of the emeraldine sequence.

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