Polymer Probe Dynamics,

摘要

A quaternary polymer solution system consisting of polystyrene (PS), poly(methyl methacrylate) (PMMA), toluene (TOL), and alphs-chloronaphthalene (CNA) has been selected to study the structure (size) and dynamics TRANSLATIONAL (AND INTERNAL) MOTIONS of both the polymer pseudonetwork and the probe. In this work, a trace amount of poly(methyl methacrylate) was used as the optically labeled chain(probe) diffusing in the polystyrene pseudonetwork. The pseudonetwork was formed by dissolving PS in an isorefractive mixed solvent, (MS) of TOL and CNA. At 38 C adn with a volume fraction Theta CNA = 0.72 in he mixed solvent, PS (with preferential adsorption) was refractive index matched.