Oil-in-oil Pickering emulsions stabilized by shigaite-like layered double hydroxide particles
Source abstract
Abstract
In this work, we report the preparation of simple oil-in-oil emulsions using layered nanoparticles as stabilizers at the interface between silicone and castor oil. Layered double hydroxides with a shigaite-like structure presenting an ideal composition of [Mn 6Al 3(OH) 18][(SO 4) 2Na] .12H 2O (S-Na/SO 4 ) were prepared by co-precipitation with increasing pH, followed by particle surface grafting with octhadecyltrimethoxysilane (S-OTMS) in an apolar medium. The powder XRD, SEM, TEM, and specific surface area (BET) techniques showed that the structure and morphology of silane-grafted S-Na/SO 4 remained practically unchanged. FTIR, EDS and ICP-OES analyses indicated that the silanes were successfully grafted onto the S-Na/SO 4 surface. In addition, to maintaining their structure and morphology, these functionalized materials showed good performance in controlling the hydrophobicity of the surface for application in oil-in-oil emulsions, improving their compatibility for the dispersion in non-polar liquids.
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Research context
OpenAlex topics: Layered Double Hydroxides Synthesis and Applications · Supercapacitor Materials and Fabrication · Mesoporous Materials and Catalysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (44)
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