Static and dynamic crossover in a critical polymer mixture.
作者： Frank Bates , Jeffrey Rosedale , Petr Stepanek , Timothy Lodge , Pierre Wiltzius
DOI: 10.1103/PHYSREVLETT.65.1893
关键词:
摘要: A model low-molecular-weight polymer mixture was studied as a function of temperature near the critical point by small-angle neutron scattering (SANS) and dynamic light (DLS). SANS measurements reveal crossover in static susceptibility from mean-field to non-mean-field behavior at {ital T}{sub x}}{approx equal}{Tc}+30 {degree}C, quantitative agreement with Ginzburg criterion. This is also reflected DLS experiments, which mode-coupled dynamics far into regime.
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