2009/09/22 by Tongchuan Suo, Suo, Tongchuan, Dadong Yan +1
Chemical Engineering · Chemistry · #Advanced Polymer Synthesis and Characterization #FOS: Physical sciences #Rheology and Fluid Dynamics Studies #Soft Condensed Matter (cond-mat.soft)
paper · pdf · doi:10.48550/arxiv.0909.3993
openalex publication_date 2009/09/22 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
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.