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Forces By And On A Polymer Grafted To A Repulsive Wall

Author

Listed:
  • JENS ODENHEIMER

    (Institut für Theoretische Physik, Universität Heidelberg, Philosophenweg 19, D-69120 Heidelberg, Germany)

  • DIETER W. HEERMANN

    (Institut für Theoretische Physik, Universität Heidelberg, Philosophenweg 19, D-69120 Heidelberg, Germany)

  • MICHAEL BRILL

    (Institut für Theoretische Chemie, Universität Heidelberg, Im Neuenheimer Feld 229, D-69120 Heidelberg, Germany)

Abstract

We investigate a self-avoiding polymer chain anchored with one end at a hard wall. The chains are modeled using the continuous backbone mass model. The sampling of the conformations is done by molecular dynamics for chains of various sizes. Presented are results for several different interesting situations. We have investigated the pressure that grafted chains of various sizes exert on the wall and find good agreement with the theory, if the theory is extended to the self-avoiding case using the standard scaling laws. Force-elongation simulations are compared to polymer theory and the partition function for a grafted ideal chain is explicitly calculated. Again we find good agreement with the theory.

Suggested Citation

  • Jens Odenheimer & Dieter W. Heermann & Michael Brill, 2005. "Forces By And On A Polymer Grafted To A Repulsive Wall," International Journal of Modern Physics C (IJMPC), World Scientific Publishing Co. Pte. Ltd., vol. 16(10), pages 1561-1575.
    • Handle: RePEc:wsi:ijmpcx:v:16:y:2005:i:10:n:s0129183105008151
    DOI: 10.1142/S0129183105008151
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