Regensburg 2007 – scientific programme

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 8: POSTER: Polymer Physics

CPP 8.12: Poster

Monday, March 26, 2007, 16:00–18:00, Poster B

Investigation of Internal Energy Change in Strain Experiments — •Susanna Herzog, Gerald Johannes Schneider, and Dietmar Göritz — Institut für Physik, Universität Regensburg, 93040 Regensburg

Due to the deformation of an elastomer the deformation energy and the heat energy change. One fundamental assumption of polymer physics is the total conversion of both energies, which implies no change of the internal energy by the first law of thermodynamics. There is however a change of the internal energy in deformation experiments. A possible explanantion for this effect is the modification of the sample‘s volume.

In our measurement we can determine the amount of the internal energy by measuring the expended work and heat for the deformation.