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Electroconductive performance of polypyrrole/graphene nanocomposites synthesized through in situ emulsion polymerization

Authors
Imran, Syed MuhammadShao, Godlisten N.Haider, M. SalmanAbbas, NadirHussain, ManwarKim, Hee Taik
Issue Date
Apr-2015
Publisher
John Wiley & Sons Inc.
Keywords
applications; composites; conducting polymers; emulsion polymerization; surfactants
Citation
Journal of Applied Polymer Science, v.132, no.15, pp.1 - 9
Indexed
SCIE
SCOPUS
Journal Title
Journal of Applied Polymer Science
Volume
132
Number
15
Start Page
1
End Page
9
URI
https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/18424
DOI
10.1002/APP.41800
ISSN
0021-8995
Abstract
The present study demonstrates a modified in situ emulsion polymerization (EP) approach convenient for the formation of polypyrrole/graphene (PPy/GN) nanocomposites with harnessed conductivities. A series of PPy/GN nanocomposites were prepared by loading different weight percent (wt %) of GN during in situ EP of pyrrole monomer. The polymerization was carried out in the presence of dodecyl benzene sulfonic acid, which acts as an emulsifier and protonating agent. The microstructures of the nanocomposites were studied by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, Fourier transform infrared, X-ray photoelectron spectroscopy, UV vis spectroscopy, Raman spectroscopy, photoluminescence spectroscopy and thermogravimetric analyses. The electrical conductivities of the nanocomposite pellets pressed at different applied pressures were determined using four probe analyzer. The electrical conductivities of the nanocomposites were considerably enhanced as compared to those of the individual PPy samples pressed at the same pressures. An enhanced conductivity of 717.06 S m(-1) was observed in the sample with 5 wt % GN loading and applied pressure of 8 tons. The results of the present study signify that the addition of GN in the PPy polymer harnesses both electrical and thermal properties of the polymer. Thus, PPy/GN nanocomposites with superior properties for various semiconductor applications can be obtained through direct loading of GN during the polymerization process. (C) 2014 Wiley Periodicals, Inc.
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ERICA 공학대학 (DEPARTMENT OF MATERIALS SCIENCE AND CHEMICAL ENGINEERING)
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