Preparation and Characterization of Polypyrrole/Montmorillonite Clay Conducting Polymer

In this study, Ppy/MMT nanocomposites have been prepared by polymerization of pyrrole in the presence of FeCl3 as oxidation agent and MMT clay in aqueous medium through the chemical polymerization. The electrical conductivity of the Ppy/MMT nanocomposites was measured by using four-point probe tech...

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Main Author:	Adzmi, Fariz
Format:	Thesis
Language:	English English
Published:	2007
Subjects:	Pyrrole. Conducting polymers. Montmorillonite.
Online Access:	http://psasir.upm.edu.my/id/eprint/5048/1/FS_2007_45a.pdf
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spelling	my-upm-ir.50482013-05-27T07:20:01Z Preparation and Characterization of Polypyrrole/Montmorillonite Clay Conducting Polymer 2007 Adzmi, Fariz In this study, Ppy/MMT nanocomposites have been prepared by polymerization of pyrrole in the presence of FeCl3 as oxidation agent and MMT clay in aqueous medium through the chemical polymerization. The electrical conductivity of the Ppy/MMT nanocomposites was measured by using four-point probe technique. Conductivity of the Ppy/MMT nanocomposites increased from 0.45 to 2.25 S/cm. The increase of conductivity depended on the percentages of Ppy loading in the nanocomposites. Ppy/MMT nanocomposites exhibited similar infra-red (IR) absorption peaks as Ppy and MMT clay. Thereby, confirming the presence of the Ppy and MMT in the products. The X-Ray Diffraction (XRD) patterns revealed, MMT strong peak at 2θ = 6.68º (d-spacing 13.22 Å) and for Ppy/MMT nanocomposites is at 2θ = 4.92º (d-spacing 17.94 Å). The shifting of the angle 2θ is indicated that the insertion of Ppy has occurred. As determined from XRD analyses the crystalline size of MMT is 17.31 Å and is 25.42 Å for Ppy/MMT nanocomposites. Thermal gravimetric analysis (TGA) revealed the improvement of degradation temperature of Ppy is at 157.36 to 177.21 ºC for Ppy/MMT nanocomposites. Scanning electron micrographs (SEM) revealed some interesting morphological differences between the pure MMT clay and Ppy/MMT nanocomposites. The Ppy/MMT nanocomposite exhibits a denser and more compact morphology. Particle formation of irregular and smaller size was clearly revealed by SEM. The effects of several parameters in producing Ppy/MMT nanocomposites were also studied. When percentage of MMT was increased from 1 to 7% the conductivity was decreased from 2.25 to 0.38 S/cm. Result shows higher conductivity for sample prepared at low temperature (~5ºC) compared to room temperature (25ºC). The surface morphology of the Ppy/MMT nanocomposites at low temperature is more compact and denser compared to Ppy/MMT nanocomposites prepared at room temperature. FeCl3 is the suitable oxidation agent to produce Ppy/MMT nanocomposites in aqueous medium. While 6 hours is the suitable preparation time for completion of polymerization of pyrrole. Pyrrole. Conducting polymers. Montmorillonite. 2007 Thesis http://psasir.upm.edu.my/id/eprint/5048/ http://psasir.upm.edu.my/id/eprint/5048/1/FS_2007_45a.pdf application/pdf en public masters Universiti Putra Malaysia Pyrrole. Conducting polymers. Montmorillonite. Science English
institution	Universiti Putra Malaysia
collection	PSAS Institutional Repository
language	English English
topic	Pyrrole. Conducting polymers. Montmorillonite.
spellingShingle	Pyrrole. Conducting polymers. Montmorillonite. Adzmi, Fariz Preparation and Characterization of Polypyrrole/Montmorillonite Clay Conducting Polymer
description	In this study, Ppy/MMT nanocomposites have been prepared by polymerization of pyrrole in the presence of FeCl3 as oxidation agent and MMT clay in aqueous medium through the chemical polymerization. The electrical conductivity of the Ppy/MMT nanocomposites was measured by using four-point probe technique. Conductivity of the Ppy/MMT nanocomposites increased from 0.45 to 2.25 S/cm. The increase of conductivity depended on the percentages of Ppy loading in the nanocomposites. Ppy/MMT nanocomposites exhibited similar infra-red (IR) absorption peaks as Ppy and MMT clay. Thereby, confirming the presence of the Ppy and MMT in the products. The X-Ray Diffraction (XRD) patterns revealed, MMT strong peak at 2θ = 6.68º (d-spacing 13.22 Å) and for Ppy/MMT nanocomposites is at 2θ = 4.92º (d-spacing 17.94 Å). The shifting of the angle 2θ is indicated that the insertion of Ppy has occurred. As determined from XRD analyses the crystalline size of MMT is 17.31 Å and is 25.42 Å for Ppy/MMT nanocomposites. Thermal gravimetric analysis (TGA) revealed the improvement of degradation temperature of Ppy is at 157.36 to 177.21 ºC for Ppy/MMT nanocomposites. Scanning electron micrographs (SEM) revealed some interesting morphological differences between the pure MMT clay and Ppy/MMT nanocomposites. The Ppy/MMT nanocomposite exhibits a denser and more compact morphology. Particle formation of irregular and smaller size was clearly revealed by SEM. The effects of several parameters in producing Ppy/MMT nanocomposites were also studied. When percentage of MMT was increased from 1 to 7% the conductivity was decreased from 2.25 to 0.38 S/cm. Result shows higher conductivity for sample prepared at low temperature (~5ºC) compared to room temperature (25ºC). The surface morphology of the Ppy/MMT nanocomposites at low temperature is more compact and denser compared to Ppy/MMT nanocomposites prepared at room temperature. FeCl3 is the suitable oxidation agent to produce Ppy/MMT nanocomposites in aqueous medium. While 6 hours is the suitable preparation time for completion of polymerization of pyrrole.
format	Thesis
qualification_level	Master's degree
author	Adzmi, Fariz
author_facet	Adzmi, Fariz
author_sort	Adzmi, Fariz
title	Preparation and Characterization of Polypyrrole/Montmorillonite Clay Conducting Polymer
title_short	Preparation and Characterization of Polypyrrole/Montmorillonite Clay Conducting Polymer
title_full	Preparation and Characterization of Polypyrrole/Montmorillonite Clay Conducting Polymer
title_fullStr	Preparation and Characterization of Polypyrrole/Montmorillonite Clay Conducting Polymer
title_full_unstemmed	Preparation and Characterization of Polypyrrole/Montmorillonite Clay Conducting Polymer
title_sort	preparation and characterization of polypyrrole/montmorillonite clay conducting polymer
granting_institution	Universiti Putra Malaysia
granting_department	Science
publishDate	2007
url	http://psasir.upm.edu.my/id/eprint/5048/1/FS_2007_45a.pdf
_version_	1747810339308699648

Preparation and Characterization of Polypyrrole/Montmorillonite Clay Conducting Polymer

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