Temperature-Induced Growth of Wormlike Copolymer Micelles

摘要: We study the temperature-induced growth of polymer micelles based on Pluronic P84 in brine (2 M NaCl) using small-angle neutron scattering, static and dynamic light viscometry as a function temperature concentration. Spherical below 30 °C are shown to grow between about 40 into wormlike long enough enter semidilute regime for volume fraction larger than 0.005. The entanglements this responsible huge increase viscosity. Above 41 °C, micellar aggregates become denser cloud point is approached viscosity drops.