Correlation of Viscoelastic Properties with Critical Packing Parameter for Mixed Surfactant Solutions in the L₁ Region

Rheology of wormlike micelles in mixed solutions of cocoamidopropyl betaine and sodium dodecylbenzenesulfonate

“…where E a is the flow activation energy, R is the gas constant, T is the absolute temperature, and A is the pre-exponential factor. The activation energy E a describes the energy that is necessary to move individual micelles in an environment of surrounding micelles [53]. Values of activation energy calculated based on slope of E a (η 0,C ) = f(1/T) and E a (τ M ) = f(1/T) curves are comparable.…”

“…It is also possible that at higher oscillation frequencies, which can not be achieved by a mechanical rheometry, will be crossing of the modulus G'and G". The salicylate [52]) and some other mixed surfactant systems (cationic/anionic [25], nonionic/anionic [53] and zwitterionic/anionic [5]). In the literature [25], two hypotheses are (12) Decrease in the contour length L of the wormlike micelles should be mainly responsible for the decrease of the Maxwell relaxation time upon temperature increase.…”

Instructive Design of Triblock Peptide Amphiphiles for Structurally Complex Micelle Fabrication

“…Over the past two decades, the fundamental thermodynamic principles that govern micelle formation have been characterized. − This work has yielded useful tools like the critical packing parameter which can be utilized to predict first-order micellar structures making it much easier to create simple geometries such as spheres and cylinders. , While useful, simple micelles are quite limited in their adaptability, functionality, and stability which has prompted further research into the development of more architecturally complex micellar structures. − Recently, twisted and helical micelles have been fabricated demonstrating the feasibility of accessing new structural domains. ,, Understanding the structure–function relationships that govern these novel architectures would allow for the rational design of novel PAM systems capable of carrying out a variety of complex tasks.…”

Growth of Mixed Nonionic Micelles

“…Indeed, the concentration of surfactant in a solution, which is used as a cleaning detergent, should exceed the cmc to ensure the presence of micelles in which oily substances or dirt can be solubilized. The shape and size of micelles is directly related to the viscosity and other rheological features of the micellar solution, which are important in many applications involving surfactants, for example, in personal care products . The phase separation phenomenon, which is to be avoided in most practical situations, may be exploited for the separation and purification of macromolecules, such as synthetically produced proteins .…”