Atomic force microscopy nanomechanics visualizes molecular diffusion and microstructure at an interface

Dong Wang, Thomas P. Russell, Toshio Nishi, Ken Nakajima

    Research output: Contribution to journalArticlepeer-review

    38 Citations (Scopus)

    Abstract

    Here we demonstrate a simple, yet powerful method, atomic force microscopy (AFM) nanomechanical mapping, to directly visualize the interdiffusion and microstructure at the interface between two polymers. Nanomechanical measurements on the interface between poly(vinyl chloride) (PVC) and poly(caprolactone) (PCL) allow quantification of diffusion kinetics, observation of microstructure, and evaluation of mechanical properties of the interdiffusion regions. These results suggest that nanomechanical mapping of interdiffusion enables the quantification of diffusion with high resolution over large distances without the need of labeling and the assessment of mechanical property changes resulting from the interdiffusion.

    Original languageEnglish
    Pages (from-to)757-760
    Number of pages4
    JournalACS Macro Letters
    Volume2
    Issue number8
    DOIs
    Publication statusPublished - 2013

    ASJC Scopus subject areas

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

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