Modification of electropolymerized polypyrrole with Na +-montmorillonite

Yu Chuan Liu, Ming Der Ger

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

A polypyrrole (PPy)/Na + montmorillonite (MMT) clay composite was prepared by an electropolymerization method on a gold substrate. The results indicate that the nucleation and growth are instantaneous two-dimensional and three-dimensional processes before and after nuclei overlapping, respectively, for the composite electropolymerization, which are distinguishable from the nucleation and growth mechanism of pure PPy electropolymerization before nuclei overlapping. The surface morphology of the prepared composite is denser and more compact. The thermal stability of PPy is improved, as shown from thermogravimetric analysis, due to the modification of the incorporated clay. Also, the conductivity of the composite was significantly increased (∼20 times) and it can depress aging, in comparison to pure PPy.

Original languageEnglish
Pages (from-to)491-496
Number of pages6
JournalChemical Physics Letters
Volume362
Issue number5-6
DOIs
Publication statusPublished - Aug 26 2002
Externally publishedYes

Fingerprint

Bentonite
polypyrroles
montmorillonite
Electropolymerization
composite materials
Composite materials
clays
Nucleation
nucleation
nuclei
Gold
Surface morphology
Thermogravimetric analysis
Thermodynamic stability
thermal stability
Aging of materials
gold
conductivity
polypyrrole
Substrates

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Spectroscopy
  • Atomic and Molecular Physics, and Optics

Cite this

Modification of electropolymerized polypyrrole with Na +-montmorillonite. / Liu, Yu Chuan; Ger, Ming Der.

In: Chemical Physics Letters, Vol. 362, No. 5-6, 26.08.2002, p. 491-496.

Research output: Contribution to journalArticle

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