Regensburg 2013 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 20: Poster: Colloids and Complex Liquids

CPP 20.19: Poster

Dienstag, 12. März 2013, 18:15–20:15, Poster C

Influence of molecular structure on rheological properties of hydrogen bonded supramolecular polymeric melts — •Tingzi Yan¹, Klaus Schröter¹, Florian Herbst², Wolfgang Binder², and Thomas Thurn-Albrecht¹ — ¹Institute of Physics, Martin-Luther University Halle-Wittenberg, Halle 06120, Germany, — ²Institute of Chemistry, Martin-Luther University Halle-Wittenberg, Halle 06120, Germany,

Combining SAXS and rheology the relation between self-assembly and mechanical properties has been studied. A semi-quantitative understanding of the influence of structure on the rheological properties in the bulk state has been achieved. Three polyisobutylene samples with thymine/2,6-diaminotriazine functional end groups were used as model system. Two different solidification scenarios were observed. In one case ordering of micelles at lower temperatures can be observed. In the second case the formation of disordered hydrogen bonded network leads to gelation at lower temperatures.