Structural characteristics of chemical vapor polymerized polypyrrole/polycaprolactam fiber composites

C. F. Xiao, Xiaoming Tao, Sarah M Y Leung, Keith W Y Kwok

Research output: Journal article publicationJournal articleAcademic researchpeer-review

10 Citations (Scopus)


Structural characteristics of polypyrrole (PPy)-coated polycaprolactam (PA6) fiber composites prepared by chemical vapor deposition, in the presence of ferric chloride as the oxidizing agent, were investigated. A multi-layered coating structure was observed by transmission electron microscopy (TEM), where a compact and denser layer existed between the PPy and PA6 fibers with two diffused layers on each side of the denser layer. The compact layer had a thickness of 200-300 nm. The experimental results show that there was no chemical interaction between PPy and PA6 in the PPy-coated PA6 fibers. However, there was a stronger interaction between PPy and PA6 molecules in the interphase of PPy-coated PA6 fiber after heat treatment at elevated temperature. The surface morphology of PPy-coated PA6 fibers changed with the application of different processing treatments, e.g. swelling and heat treatment.
Original languageEnglish
Pages (from-to)101-107
Number of pages7
JournalPolymer International
Issue number1
Publication statusPublished - 1 Jan 2006


  • Chemical vapor polymerization
  • Fiber composites
  • Polypyrrole
  • Structural characteristics

ASJC Scopus subject areas

  • Polymers and Plastics

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