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Monte Carlo Comparative Study of Model Detergent and Lipid Aggregation on a Lattice

Author

Listed:
  • Claudio S. Shida

    (Departamento de Física Geral, Instituto de Física, Universidade de São Paulo, São Paulo, SP, CP66318, 05315-970, Brazil)

  • Vera B. Henriques

    (Departamento de Física Geral, Instituto de Física, Universidade de São Paulo, São Paulo, SP, CP66318, 05315-970, Brazil)

Abstract

We have studied the aggregation of model amphiphilic molecules on a square lattice through Monte Carlo simulations via Metropolis. Amphiphilic molecules are modeled with a hydrophilic head represented by a small set of "water-loving" sites whereas the hydrophobic double-tail is represented by a second set of oil-loving sites. We have compared aggregation properties of single-stail (detergents) and double-tail (phospholipids) amphiphiles with equivalent hydrophobicity ratios. Equilibrium quantities such as average particle energy, specific heat, free amphiphile density show similar behavior for both model systems. The transition region associated with aggregation occurs at high temperatures for phospholipids as compared to detergents.

Suggested Citation

  • Claudio S. Shida & Vera B. Henriques, 1998. "Monte Carlo Comparative Study of Model Detergent and Lipid Aggregation on a Lattice," International Journal of Modern Physics C (IJMPC), World Scientific Publishing Co. Pte. Ltd., vol. 9(06), pages 801-807.
    • Handle: RePEc:wsi:ijmpcx:v:09:y:1998:i:06:n:s0129183198000728
    DOI: 10.1142/S0129183198000728
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