Abstract
This study explores non-aqueous Pickering emulsions stabilized by natroglaucocerinite-like layered double hydroxides (Zn/Al LDH), featuring two immiscible phases: glycerin (Gly) and various oils (silicone, castor, soybean, or vaseline) over a span of 15 days. The stability of the emulsions was assessed through macroscopic observations of flocculation, creaming, sedimentation, and coalescence. The wettability of the solid particles at the phase interface was analyzed using tensiometry and contact angle measurements, while fluorescence microscopy was used to determine the type of emulsion. Emulsification effectiveness was found to be influenced by the glycerin volume fraction, oil type, and LDH particle concentration. Oils like silicone and vaseline required both a higher LDH concentration and glycerin fraction for complete oil emulsification, whereas castor and soybean oils showed better emulsification at higher glycerin fractions. These findings underscore the potential of LDH as a versatile and eco-friendly solution for applications that demand the reduction or control of specific solvents.
Published Version
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