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Monte Carlo test of the Flory-Huggins theory for polymer mixtures

1987; American Physical Society; Volume: 35; Issue: 13 Linguagem: Inglês

10.1103/physrevb.35.6873

1095-3795

A.A. Sariban, Kurt Binder, Dieter W. Heermann,

Material Dynamics and Properties

A lattice model of symmetric polymer mixtures is studied by Monte Carlo methods. We model the polymers as self-avoiding walks of N steps, an energy \ensuremath{\epsilon} being won if neighboring monomers are of the same kind. Our results strongly disagree with the Flory-Huggins mean-field theory, which is widely believed to be accurate for large N. Implications of this discrepancy for the understanding of real polymers are discussed.