Nonionic surfactant mixtures. I. Phase equilibria in C10E4–H2O and closed‐loop coexistence

摘要: A detailed phase diagram for mixtures of the homogeneous nonionic surfactant 3,6,9,12‐tetraoxadocosanol (C10E4) with water is presented. Closed‐loop coexistence shown to be a prominent feature in this system as well three other aqueous which it compared: 3,6,9,12,15‐pentaoxapentacosanol (C10E5), decyldimethylphosphine oxide (C10PO), and dodecyldimethylphosphine (C12PO). The sizes locations these curves are discussed terms decorated lattice‐gas model closed‐loop coexistence. shape one loop vicinity its lower critical point nonclassical; β found 0.36±0.02. Sources complexity C10E4–water discussed.