Regensburg 2013 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

CPP: Fachverband Chemische Physik und Polymerphysik

CPP 45: Colloids and Complex Liquids II

CPP 45.1: Hauptvortrag

Donnerstag, 14. März 2013, 15:00–15:30, H40

Interacting colloidal fluids self-assembled from supramolecular polymers — Tingzi Yan¹, Klaus Schröter¹, Florian Herbst², Wolfgang Binder², and •Thomas Thurn-Albrecht¹ — ¹Institute of Physics, Martin-Luther University Halle-Wittenberg — ²Institute of Chemistry, Martin-Luther University Halle-Wittenberg

It is well established that small or medium sized molecules carrying groups with specific interactions can form supramolecular polymers and networks. In many cases, the specificity of the underlying interactions is most prominent in dilute solution. We present a supramolecular system based on polyisobutylene polymers with thymine and 2,6-diaminotriazine functional end groups forming well-defined micellar aggregates in the melt whose properties can be described as that of an interacting colloidal fluid. The concentration of micelles depends on temperature leading to a solid-fluid ordering transition for monofunctional polymers which shows up in structure as well as in the rheological properties. Bifunctional polmyers on the other hand can form hydrogen-bonds between micelles leading to a temperature dependent solidification by gelation without ordering.