标题： 半柔性纠缠聚合物在原始链网络模拟中的持久长度和平台模量 显示英文标题

标题： Persistence length and plateau modulus of semiflexible entangled polymers in primitive chain network simulations

摘要： 纠缠半柔性聚合物的平台模量（G_0）与持久长度（L_p）之间的关系仍然不确定。一些先前的理论模型预测G_0随着L_p的增加而减少，而实验结果则表明相反的情况。在本研究中，我们将原始链网络（PCN）模型扩展到包含缠结长度尺度上的弯曲刚度，与模型的粗粒化一致。模拟研究了刚度（以及分子量）对链构象和松弛模量的影响。我们的结果揭示了一个描述为G_0~L_p^(2/3)的关系，表明G_0随着L_p的增加而增加，与实验结果一致。然而应考虑的是，在我们的模拟中隐含的条件是缠结长度在L_p变化时保持不变。 显示英文摘要

摘要： The relationship between the plateau modulus (G_0) and the persistence length (L_p) of entangled semiflexible polymers is still uncertain. Some previous theoretical models have predicted that G_0 decreases with increasing L_p, while experiments indicated the opposite. In this study, we extend the primitive chain network (PCN) model to incorporate bending rigidity at the scale of the entanglement length, consistently with the coarse graining of the model. Simulations investigate the effects of rigidity (and of molecular weight) on chain conformation and relaxation modulus. Our results reveal a relationship described as G_0~L_p^(2/3), indicating that G_0 increases with increasing L_p, consistently with experiments. It should be considered, however, that implicit in our simulations is the condition that the entanglement length is kept fixed with changing L_p.