Abstract
Self-organization of Triton X-100 (TX-100) surfactants in aqueous dispersion leading to their signature self-assembly is reported based on experimentally determined static structure factor data obtained from small-angle neutron scattering (SANS) experiments. Surfactant gels were formed for dispersions having 40% ≤ [TX-100] ≤ 55% (v/v). An unexplored correlation peak was noticed at a specific wave vector q* whose value increased with surfactant concentration. The form factor data could be described by modeling the micelles as core-shell structures (hydrophobic core with a polar shell). The intermicellar interactions were modeled with hard sphere, sticky hard sphere, and hard sphere in square well potential designations. We used a lattice model based on random walk formalism to theoretically describe this self-assembly, and observed that the cluster size decreased with TX-100 concentration consistent with experimental data. The self-organization of TX-100 in aqueous medium is presented.
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