Equation of state of athermal lattice chains: Effects of polydispersity

摘要

The repulsivehyphen;wall simulation method is applied to a polydisperse system of athermal chains on the simple cubic lattice. The pressure is determined over the full range of densities for two chain length distributions with average length lang;nrang;=40. Our results indicate that the compressibility factor is insensitive to polydispersity, in accord with the predictions of simple meanhyphen;field theories. The density dependence of the meanhyphen;square endhyphen;tohyphen;end distance is also investigated.