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Electrochemical synthesis and properties of layer-structured polypyrrole/montmorillonite nanocomposite films

Published online by Cambridge University Press:  31 January 2011

Chang-An Wang ,
Keyu Chen ,
Yong Huang  and
Huirong Le
Yong Huang
Affiliation:
State Key Lab of New Ceramics and Fine Processing, Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, People’s Republic of China
Huirong Le
Affiliation:
School of Engineering, Physics and Mathematics, University of Dundee, Dundee DD1 4HN, United Kingdom
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Abstract

Layer-structured polypyrrole/montmorillonite (PPy/MMT) naoncomposite films were synthesized by the electrodeposition method. The fabricated free-standing films consist of about 0∼2 wt% Na+-montmorillonite (NMMT). The thickness of films could be controlled by deposition time. X-ray diffraction (XRD) and scanning electron microscope (SEM) were used to observe the microstructure of the films. After MMT was introduced into the PPy matrix, the interspace between PPy chains decreased, according to the XRD results. The layered structure of the films was observed from the SEM images. Tensile and nanoindentation test results showed that the mechanical properties of the composite films were improved at low clay loading. The electrical conductivity of the films with 1.2 wt% MMT loading was increased from 3.6 to 51 S/cm, probably because of the restricted growth of PPy chains in the interspace of MMT layers.

Keywords

Electrochemical synthesisPolymerNanostructure
Type
Articles
Information
Journal of Materials Research , Volume 25 , Issue 4 , April 2010 , pp. 658 - 664
Copyright
Copyright © Materials Research Society 2010

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