Open AccessInverse Pickering Emulsion Stabilized by Exfoliated Hexagonal-Boron Nitride (h-BN)
Author(s) -
Dánae Gonzalez Ortiz,
Céline PochatBohatier,
Julien Cambedouzou,
Sébastien Balme,
Mikhaël Bechelany,
Philippe Miele
Publication year - 2017
Publication title -
langmuir
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.042
H-Index - 333
eISSN - 1520-5827
pISSN - 0743-7463
DOI - 10.1021/acs.langmuir.7b03324
Subject(s) - pickering emulsion , emulsion , boron nitride , hexagonal boron nitride , materials science , chemical engineering , rheology , boron , inverse , hexagonal crystal system , optical microscope , stabilizer (aeronautics) , scanning electron microscope , polymer chemistry , chemistry , nanotechnology , crystallography , composite material , organic chemistry , graphene , geometry , mathematics , engineering , mechanical engineering
The formation of inverse Pickering emulsions using exfoliated hexagonal boron nitride (h-BN) as an effective particulate stabilizer without using any surfactants is reported for the first time. The stability and the type of h-BN Pickering emulsions formulated with different BN concentrations and by varying oil/water (o/w) ratios are studied and discussed. First the emulsion structure is analyzed microscopically through optical and epifluorescence microscopy and macroscopically by the study of the rheological behavior. The average droplet size decreases with h-BN concentration whereas the emulsions achieve good stability at 2 wt % BN concentrations and for a 1:1 o/w ratio. In all formulations, the emulsions are of water-in-oil (w/o) type due mainly to the hydrophobicity of h-BN.
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