Viscoelastic processes in non-ergodic states (percolation and glass transitions) of attractive micellar systems

Mallamace, Francesco; Broccio, Matteo; Tartaglia, P.; Chen, W.R.; Faraone, Antonio; Chen, S.H.

doi:10.1016/j.physa.2003.08.026

Cited by 3 publications

(2 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…At low and high temperatures (17.3 and 54.4 • C), the frequency dependence of G approach the terminal behavior of a viscoelastic liquid, G ∼ ω 1 , reflecting the liquidlike nature of the sample [29,30]. For T = 47.7 • C, G is characterized by a precise scaling behavior that can be ascribed to the percolation transition [4,31]. A similar result was observed for 59.8% L64 aqueous solution, where at 16.8 and 27.8 • C, the system exhibits liquidlike behavior while the percolation transition occurs at the immediate temperature T = 17.5 • C, as shown in Fig.…”

Section: Resultsmentioning

confidence: 95%

See 1 more Smart Citation

Phase diagram of the Pluronic L64–H2O micellar system from mechanical spectroscopy

Zhou

Wang

et al. 2011

Phys. Rev. E

View full text Add to dashboard Cite

The linear viscoelastic properties of aqueous Pluronic L64 solutions have been investigated at high copolymer concentrations (25-62 wt%) using our modified low-frequency mechanical spectroscopy. The concentration-temperature phase diagram of the L64/H(2)O system was constructed by studying the evolution of the loss modulus and loss tangent as temperature is increased at a fixed frequency. A particular attention was focused on the dynamics approaching the beginning and ending points (39% and 60%) of the fusiform gel region in the phase diagram. The dynamics is found to have a similar viscoelastic behavior at the low and high concentrations, where a frequency scaling expected for a static percolated network is exhibited. Moreover, with increasing temperature, the system above the critical gel concentration undergoes a transition from a viscoelastic liquid to a solid gel through a percolated particle network. Therefore, our results suggest that the formation of the gel is dominated by the percolation of the particle clusters.

show abstract

Section: Resultsmentioning

confidence: 95%

“…predicts a universal scaling behavior [32]. At the percolation transition, G and G have the following power-law dependence on frequency ω [4,31,33] …”

Section: Resultsmentioning

confidence: 99%