IWNET

2006

4th International workshop on nonequilibrium thermodynamics and complex fluids
3-7 september 2006, Rhodes, Greece

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POSTER PRESENTATION
Tuesday, 15:40, Panel No. 9

Coarse Grained Molecular Dynamics Simulation of the Adhesion between End-grafted Polymer Films

H. Morita1, H. Miura, M. Yamada2, T. Yamaguchi1, M. Doi1
1 The University of Tokyo & JST-CREST, Japan
2 Nagoya University, Japan

Adhesion between two polymer films consisting of end grafted polymer is studied by coarse-grained molecular dynamics. The stress-distance curve for the end-grafted polymers is obtained at various temperatures with changing the grafted polymer density and topology of chain conformations. From our result, we can organize three types of the separation patterns, brittle, fibril, and cavity separations. We can find that the adhesion force (stress) for brittle separation is much stronger than those for other separations. On the other hand, the adhesion energy for fibril separation is largest one among three separations. In the presentation, we will present the relation between the separation pattern (separated structure) and the adhesion force/energy. © IWNET 2006

© and Kleanthi for IWNET 2006