Dynamic force spectroscopy on a single polymer chain

Hiroyuki Watabe; Ken Nakajima; Yasuhiro Sakai; Toshio Nishi

doi:10.1021/ma060724g

Dynamic force spectroscopy on a single polymer chain

Hiroyuki Watabe, Ken Nakajima, Yasuhiro Sakai, Toshio Nishi

Research output: Contribution to journal › Article › peer-review

25 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 language	English
Pages (from-to)	5921-5925
Number of pages	5
Journal	Macromolecules
Volume	39
Issue number	17
DOIs	https://doi.org/10.1021/ma060724g
Publication status	Published - 2006 Aug 22
Externally published	Yes

ASJC Scopus subject areas

Organic Chemistry
Polymers and Plastics
Inorganic Chemistry
Materials Chemistry

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10.1021/ma060724g

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AU - Nishi, Toshio

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AB - 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.

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Dynamic force spectroscopy on a single polymer chain

Abstract

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