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  • Title: Temperature-induced growth of wormlike copolymer micelles.
    Author: Duval M, Waton G, Schosseler F.
    Journal: Langmuir; 2005 May 24; 21(11):4904-11. PubMed ID: 15896030.
    Abstract:
    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 scattering, and viscometry as a function of temperature and polymer concentration. Spherical micelles below 30 degrees C are shown to grow between about 30 and 40 degrees C into wormlike micelles long enough to enter the semidilute regime for polymer volume fraction larger than 0.005. The entanglements in this regime are responsible for a huge increase in the viscosity. Above about 41 degrees C, the micellar aggregates become denser as the cloud point is approached and the viscosity drops.
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