Large-scale CGMD simulations to evaluate two-dimensional scattering patterns of stretched polymer materials

Stretched polymer materials exhibit interesting two-dimensional scattering patterns (2DSPs) that originated from network heterogeneity and bond breakages. Abnormal butterfly patterns (ABPs) were widely observed in scattering experiments, where ABPs in the small angle region give rise to a peak spot on the q-axis in the stretching direction and a dark streak on the q-axis perpendicular. We performed our large-scale CGMD simulation with large-scale system size to describe small-angle 2DSPs and confirmed the reproduction of the ABPs in various polymer network systems.