Wormlike micelles have been found wide applications in various fields, such as drug delivery, enhanced oil recovery, rheology control, drag reduction agents and many home care, personal care and cosmetic products. Its formation is based on noncovalent interactions such as hydrophobic, screening electrostatic, π-π stacking, hydrogen bonding among others. The elongated structures can reach hundreds of nanometers in length and they are continuously breaking and recombining. The formation of wormlike micelles in aqueous solution with cationic surfactant is highly favored in the presence of hydrotropes such as derivatives of benzoate. In this study, we used tetradecyltrimethylammonium bromide (TTAB) and positional isomers of halogen benzoate as hydrotropes (Figure 1) to form wormlike micelles in aqueous solutions.<br/>The variation of enthalpy of such process was determined by using isothermal titration calorimetric measurements. The calorimetric results were also correlated with the ones obtained from light scattering and rheological experiments.

Enthalpy of formation of wormlike micelles involving TTAB and halogen derivatives of benzoate

254th National Meeting (2017)

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