Fabrication of Polypyrrole-Mcm41 Nanocomposites Using Electrodeposition Method
Purely siliceous MCM-4 1 (SiMCM-4 1) and aluminium-containing MCM-4 1 (AIMCM-41) with different ratios of AVSi were synthesized following a modified procedure of Ryoo and Kim (1 995). PolypyrroleJMCM-4 1 (PPyJMCM-4 1) conductive polymer nanocomposite films was electrochemically prepared on Indium...
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| Format: | Thesis |
| Language: | English English |
| Published: |
2006
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| Subjects: | |
| Online Access: | http://psasir.upm.edu.my/id/eprint/6297/1/FS_2006_33.pdf |
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| Summary: | Purely siliceous MCM-4 1 (SiMCM-4 1) and aluminium-containing MCM-4 1
(AIMCM-41) with different ratios of AVSi were synthesized following a modified
procedure of Ryoo and Kim (1 995). PolypyrroleJMCM-4 1 (PPyJMCM-4 1)
conductive polymer nanocomposite films was electrochemically prepared on Indium
Tin Oxide (ITO) glass electrode from an aqueous solution of pyrrole monomer and ptoluene
sulfonate dopant in a suspension of prepared MCM-41. Various PPy/MCM-
41 nanocomposite films were obtained by varying the experimental conditions with
the objective of producing conductive polymer nanocomposites with enhanced
thermal and conductivity properties. The prepared nanocomposite films were
characterized by Fourier Transform Infrared (FTIR) Spectroscopy, X-ray diffraction
(XRD) analysis, Thermogravimetric Analysis, Scanning Electron Microscopy (SEM),
Transmission Electron Microscopy (TEM) and conductivity measurements. From observations of the XRD patterns, nanocomposites prepared at low AVSi ratio
(PPyJA130 and PPyJA140) and PPyJSiMCM-41 showed better crystallinity compared
to those prepared at high AlJSi ratio (PPyJA160 and PPyJA180) which was observed to
be amorphous. FTIR and XRD studies showed that the PPy and SiMCM-41 are the
most compatible for the formation of PPyJSiMCM-41 nanocomposite. The TGA
analysis and conductivity studies showed that the best nanocomposite was
PPyJSiMCM-41 which was found to be the most thermally stable with the highest
conductivity of 5.24 SJcm. This sample was obtained with optimum condition with
0.5 M pyrrole, 0.1 M p-toluene sulfonate and 3 g/dm3 MCM-41 at 1.2 volt (vs SCE). |
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