Avalia？？o por SAXS e DSC das intera？？es entre H2O e Renex-100

the aggregation behavior of the non-ionic surfactant renex-100 in aqueous solutions and mesophases was evaluated by saxs in a wide range of concentrations, between 20 and 30 °c. complementary, water interactions were defined by dsc curves around 0°c. saxs showed that the system undergoes the following phase transitions, from diluted to concentrated aqueous solutions: 1) isotropic solution of renex aggregates; 2) hexagonal mesophase; 3) lamellar mesophase; and 4) isotropic solution. dsc analysis indicated the presence of interfacial water above 70wt%, which agreed with the segregation of free water to form the structural mesophases observed by saxs bellow this concentration.