Observation of pulley effect of slide-ring gel using atomic force microscopy

Tadahiro Odani, Yasuhiro Sakai, Yasushi Okumura, Kohzo Ito

Research output: Contribution to conferencePaperpeer-review


The slide-ring gel is a new kind of gel in which polymer chain can pass through topological crosslinks named figure-of-eight cross-links. Therefore, the polymer chains freely pass through the cross-links, which is supposed to automatically equalize the nanoscopic heterogeneity in structure and stress. In this study, we tried to observe single molecular pulley effect using atomic force microscopy (AFM). We introduce thiol groups on figure-of-eight cross-links and pulled the cross-links with Au-coated AFM cantilever. The maximum extension force was almost independent of the amount of thiol groups on crosslinks and of the frequency of Au-thiol bond formation. It was found that the averaged extension length of slide-ring gel in good solvent is much longer than that in poor solvent. This indicates that the pulley effect equalized the nanoscopic stress in slide-ring gel.

Original languageEnglish
Number of pages1
Publication statusPublished - Dec 1 2005
Externally publishedYes
Event54th SPSJ Annual Meeting 2005 - Yokohama, Japan
Duration: May 25 2005May 27 2005


Other54th SPSJ Annual Meeting 2005

All Science Journal Classification (ASJC) codes

  • Engineering(all)


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