Rheological Properties of Sodium Dodecyl Sulphate-Based Supramolecules Hydrogel Induced by Aluminum Ion

Abstract:

Surfactant hydrogels were prepared composed of sodium dodecyl sulphate(SDS) /Al(NO₃)₃ /H₂O systmes. Steady and oscillatory shear experiments were carried out to evaluate the inner structure of the gel with variable Al(NO₃)₃ concentration at a fixed SDS 20wt% composition in gel region. The results indicated that hydrogels showed shear-induced thinning nonlinear rheology behaviors. Phase transition was measured by differential scanning calorimetry and the transition temperature(T_gel) increased with aluminum salt concentration increasing. It is in conformity with electron micrograph of microstructures from spherical, short rod-like to larger cylindrical micelles. Littler salt change resulted in larger micelles transition derived from supramolecule structure of SDS and Al³⁺.

• Periodical: Advanced Materials Research (Volumes 233-235)
• Pages: 1966-1971
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.233-235.1966
• Online since: May 2011
• Authors: Ying Xue Zhou, Xiao Dong Fan
• Keywords: Rheological Property, Sodium Dodecyl Sulfate (SDS), Supramolecule Hydrogel, Wormlike Micelle

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