%0 Journal Article
%A Napso, Sofia
%A Rein, Dmitry M.
%A Fu, Zhendong
%A Radulescu, Aurel
%A Cohen, Yachin
%T Structural Analysis of Cellulose-Coated Oil-in-Water Emulsions Fabricated from Molecular Solution
%J Langmuir
%V 34
%N 30
%@ 1520-5827
%C Washington, DC
%I ACS Publ.
%M FZJ-2018-05114
%P 8857 - 8865
%D 2018
%X Natural cellulose has been used as a coating to stabilize oil-in-water (o/w) emulsions by exploiting the amphiphilic character of the cellulose chains molecularly dissolved in the ionic liquid 1-ethyl-3-methylimidazolium acetate. Its cellulose coating exhibits a continuous amorphous structure which differs significantly from the cellulose particle stabilization used in Pickering emulsions. The structure of these cellulose-coated o/w emulsion particles, in particular the cellulose coating shell characteristics (thickness, porosity, and composition), is studied by using a combination of direct imaging methods such as cryogenic electron microscopy and fluorescence microscopy with small-angle neutron scattering measurements. This work suggests a unique multicompartment structure of the emulsion particles: an oil core, surrounded by an inner shell composed of a porous cellulose gel, encapsulated by a dense outer cellulose shell, a few nanometers in thickness. The thickness of the inner cellulose shell varies significantly. The nanoscale emulsion droplets exhibit a thickness of 10 ± 3 nm, whereas the larger micron-sized droplets exhibit a thicker inner cellulose shell of 500–750 nm. It is also inferred that the cellulose shells contain water rather than oil.
%F PUB:(DE-HGF)16
%9 Journal Article
%$ pmid:29979601
%U <Go to ISI:>//WOS:000440768400016
%R 10.1021/acs.langmuir.8b01325
%U https://juser.fz-juelich.de/record/851478