Tube Survival Fraction in Primitive Chain Network Simulations

In the framework of tube model, survival fraction dilated tube, φʹ(t), is essential since relaxation entire system described according to this quantity. However, a method define it in multi-chain simulations has yet be considered. study, primitive chain network were performed, and few structural quantities discussed as possible candidates for use φʹ(t). Before analysis, simulation was evaluated against literature data linear polyisoprene melts, quantitative agreement obtained viscoelastic dielectric relaxations. Afterward, end-to-end function compared probability slip link φs(t) ratio monomers between most distant surviving pair total number ns(t)/nt. The result implies that ns(t)/nt comparable Comparison atomistic molecular dynamics (MD) polyethylene showed similar results, implying φʹ(t) can even MD if entanglement points specified.