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A Suspension of Spheres in a Dilute Polymer Solution

机译:稀聚合物溶液中球体的悬浮

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The Hookean dumbbell model of a macromolecule predicts non-uniform density and pressure fields surrounding a sphere buoyant in a dilute polymer solution when the size of the sphere is of the same order of magnitude as the size of the macromolecules. Using this prediction, the root mean square separation distance of a suspension of spheres buoyant within a dilute polymer solution is found to be inversely proportional to both the square of the radius of a, sphere and the density of the polymer solution. The phase space distribution function for an ensemble of spheres immersed at equilibrium within a dilute polymer solution is found and used to define the magnitude of the ensemble average peculiar acceleration of the spheres. The peculiar acceleration results from changes in direction of the peculiar velocity. It is found to be directly proportional to the temperature, polymer density, and square of the radius of a sphere and inversely proportional to the mass of a sphere. The self-diffusivity of the particles varies directly with the square root of the temperature.
机译:大分子的Hookean哑铃模型可预测当球形的大小与大分子的大小相同数量级时,在稀聚合物溶液中漂浮的球周围的密度和压力场不均匀。使用该预测,发现在稀聚合物溶液中漂浮的球体悬浮液的均方根间隔距离与球体半径的平方和聚合物溶液的密度均成反比。找到了一个平衡球体的相空间分布函数,该球体在平衡状态下浸入稀聚合物溶液中,并用于定义球体的整体平均奇异加速度的大小。特殊的加速度是由特殊速度的方向变化引起的。发现它与温度,聚合物密度和球体半径的平方成正比,与球体质量成反比。颗粒的自扩散率直接随温度的平方根变化。

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