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arXiv 0909.3993cond-mat.soft
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一个Polymer解在两个同心圆间的相行为

The Phase Behaviors of A Polymer Solution Confined between Two Concentric Cylinders

Tongchuan Suo, Dadong Yan

摘要:

本文从理论上研究了聚合物溶液在两个同轴圆柱壁之间的相行为。对于中性内柱的情形,由于系统中自由维数的存在,通过高斯涨落理论导出的旋节点与约束无关。动力学分析表明,波动模式总是有一个沿轴向的平面波分量,这可能导致一个类似的浓度模式的形成。另一方面,利用自洽平均场论(SCMFT)得到了体系的平衡结构,并通过改变内圆柱壁的性质观察到了“润湿”现象与相分离之间的相互作用。

英文摘要:

A theoretical study on the phase behaviors of a polymer solution confined between two coaxial cylindrical walls is presented. For the case of a neutral inner cylinder, the spinodal point derived through the Gaussian fluctuation theory is confinement-independent because of the existence of a free dimension in the system. The kinetic analysis indicates that the fluctuation modes always have a component of a plane wave along the axial direction, which can lead to the formation of a periodic-like concentration pattern. On the other hand, the equilibrium structure of the system is obtained by using the self-consistent mean-field theory (SCMFT) and the interplay between the "wetting" phenomenon and the phase separation is observed by modifying the property of the inner cylinderical wall.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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