Primitive Chain Network Simulations for Shear Rheology of Poly(propylene carbonate) Melts

Although chemistry dependence in the non-linear rheology of polymers has been rather established for uniaxial elongations, it not frequently discussed fast shear. In this study, to see effect orientation-dependent monomeric friction on shear rheology, we conducted primitive chain network simulations a few poly(propylene carbonate) melts, which have determined model from data recently [Yang et al., Nihon Reoroji Gakkaishi, 50, 127–135 (2022)]. The simulation qualitatively reproduced typical behaviors, such as thinning and stress overshoot, under shears. agreement with experimental became better when was varied according segment orientation. particular, rate peak position overshoot (i.e., strain at peak) reproduced. This result implies that chemistry-dependent may probably be high