Cooperative dynamics in unentangled polymer fluids
Cooperative dynamics in unentangled polymer fluids
复制标题
DOI：
10.1103/physrevlett.88.025901
复制
发表时间：
2002-01-14
影响因子：
8.6
通讯作者：
Guenza, M
中科院分区：
文献类型：
--
作者：
Guenza, M
我们提出了一个广义朗之万方程的相互作用半柔性聚合物链的动力学进行缓慢的合作动力学。计算的高斯分子间的质心和单体的潜力与计算机模拟数据定量一致。实验观察到的短时间亚扩散制度的聚合物均方位移出现从分子内和分子间的平均力势之间的竞争。
We present a generalized Langevin equation for the dynamics of interacting semiflexible polymer chains undergoing slow cooperative dynamics. The calculated Gaussian intermolecular center-of-mass and monomer potentials are in quantitative agreement with computer-simulation data. The experimentally observed short-time subdiffusive regime of the polymer mean-square displacement emerges from the competition between intra- and intermolecular mean-force potentials.