Dynamic force spectroscopy on a single polymer chain

Hiroyuki Watabe, Ken Nakajima, Yasuhiro Sakai, Toshio Nishi

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)

Abstract

A technique based on atomic force microscopy (AFM) for dynamic measurement of mechanical properties of a single polymer chain was proposed. AFM. cantilever was mechanically oscillated at approximately 10 kHz during stretching process. By this technique, we could quantitatively estimate elongation-dependent changes of stiffness and viscosity of a single chain itself with using a phenomenological model. The solvent effect on the viscosity in low extension regions was investigated. It was ensured that the viscosity under 10 kHz perturbation was attributed to monomer - solvent friction. Viscosity quantization corresponding to consecutive detachments of polymer chains was also observed.

Original languageEnglish
Pages (from-to)5921-5925
Number of pages5
JournalMacromolecules
Volume39
Issue number17
DOIs
Publication statusPublished - 2006 Aug 22
Externally publishedYes

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry
  • Materials Chemistry

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