Linear viscoelasticity of entangled wormlike micelles bridged by telechelic polymers: An experimental model for a double transient network

摘要: We survey the linear viscoelasticity of a new type transient network: bridged wormlike micelles, whose structure has been characterized recently by Ramos and Ligoure [Macromolecules 40, 1248–1251 (2007)]. This composite material is obtained adding telechelic copolymers (water-soluble chains with hydrophobic stickers at each extremity) to solution entangled micelles (WM). For comparison, naked WM decorated amphiphilic are also investigated. While these latter systems exhibit almost same single ideal Maxwell behavior, solutions can be described as two fluids component blends, markedly different characteristic times, τfast τslow, elastic moduli, Gfast Gslow, Gfast⪢Gslow. show that slow mode related network WM, fast active (i.e., do not form loops but bridge micelles). The depen...