Abstract
The compatibilization of essential oils and surfactants is a crucial factor when forming aggregates that should serve as a matrix to stabilize the core structure and develop the wrapping process with the shell components in the microencapsulation process of the essential oils. The aggregation structures formed with nonionic surfactants, such as Tween 80, and anionic surfactant SDS, and their thermodynamic values are well known in colloidal systems. Essential oils are natural, and in the same oil, there are a large number of organic compounds. They are often used in cosmetics, the food industry, and medicine. Although essential oils are widely incorporated into surfactant systems, the fundamental thermodynamic and interfacial mechanisms governing their coaggregation with surfactants remain poorly understood. Therefore, this paper investigates how cinnamon and clove oils influence surfactant aggregation, adsorption, and interfacial interactions in systems containing nonionic Tween 20, Tween 80, or Span 40 and anionic SDS. Combining surface tension, thermodynamic analyses, DLS, Zeta Potential, and optical microscopy will provide enough data to support our findings.