Mode selection in the dynamics of sheared polymer solutions.
Mode selection in the dynamics of sheared polymer solutions.
复制标题
剪切聚合物溶液动力学中的模式选择。
作者：
Dixon;Pine;Wu
我们报告了在 θ 条件下半稀聚合物溶液剪切停止时的瞬态光散射测量。聚合物溶液表现出平衡浓度波动的两种弛豫模式。瞬态测量表明，将浓度波动与剪切流耦合并从而增强浓度波动的机制，选择性地仅增强两种平衡模式中较慢的一种
We report transient light scattering measurements upon the cessation of shear for a semidilute polymer solution under theta conditions. The polymer solution demonstrates two modes of relaxation for concentration fluctuations in equilibrium. The transient mensurements show that the mechanism that couples the concentration fluctuafions to the shear flow, and thereby enhances concentration fluctuations, selectively enhances only the slower of the two equilibrium modes