It has been theoretically predicted that a polymer chain in poor solvent conditions undergoes a phase transition from a collapsed globule to a stretched coil. In this paper, we present force-distance curves, obtained by atomic force microscopy (A-FM), showing the characteristic force-plateau associated with this transition. We show that the magnitude of the force depends on the environment (interfacial energy) that the stretched coil experiences when it is pulled-out as it is predicted by the theory.
|Translated title of the contribution||Pulling single chains out of a collapsed polymer monolayer in bad-solvent conditions|
|Pages (from-to)||49 - 53|
|Number of pages||5|
|Journal||Material Research Society Symposium Proceedings|
|Issue number||Symposia A/B|
|Publication status||Published - 2003|