Dresden 2006 – scientific programme

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CPP: Chemische Physik und Polymerphysik

CPP 11: POSTER Disperse Polymer Systems

CPP 11.48: Poster

Tuesday, March 28, 2006, 17:00–19:00, P3

Non-linear rheological properties of fibrillar networks by self-organization — •Martin Kühne and Christian Friedrich — Freiburg Materials Research Centre (FMF) & Institute of Macromolecular Chemistry Albert-Ludwigs-University, Stefan-Meier-Str. 21, 79104 Freiburg, Germany

Dibenzylidene sorbitol (DBS) is known to gel in organic liquids and polymers by the formation of long fibres due to the self-organization of DBS molecules. We studied this process in detail for DBS organization in poly(propylene oxides) of different molecular weight. We report on the morphological as well as the linear and non-linear viscoelastic properties of these materials in the gel state. While the linear viscoelastic properties can be understood quantitatively on the basis of the No-dqsoft glassy materialsNo-dq model, the non-linear properties are mainly determined by the damage of the fibre network.