| Autor: |
Courtenay JC; Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, United Kingdom.; Centre for Sustainable Chemical Technologies, University of Bath, Claverton Down, Bath BA2 7AY, United Kingdom., Jin Y; Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, United Kingdom., Schmitt J; Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, United Kingdom.; LSFC, Laboratoire de Synthèse et Fonctionnalisation des Céramiques, UMR 3080 CNRS/Saint-Gobain CREE, Saint-Gobain Research Provence, 550 Avenue Alphonse Jauffret, Cavaillon 84300, France., Hossain KMZ; Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, United Kingdom., Mahmoudi N; ISIS Neutron & Muon Source, STFC Rutherford Appleton Laboratory, Didcot OX11 0QX, United Kingdom., Edler KJ; Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, United Kingdom., Scott JL; Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, United Kingdom.; Centre for Sustainable Chemical Technologies, University of Bath, Claverton Down, Bath BA2 7AY, United Kingdom. |
| Abstrakt: |
Oil-in-water emulsions have been stabilized by functionalized cellulose nanofibrils bearing either a negative (oxidized cellulose nanofibrils, OCNF) or a positive (cationic cellulose nanofibrils, CCNF) surface charge. The size of the droplets was measured by laser diffraction, while the structure of the shell of the Pickering emulsion droplets was probed using small-angle neutron scattering (SANS), confocal laser scanning microscopy (CLSM), scanning electron microscopy (SEM), and rheology measurements. Both OCNF- and CCNF-stabilized emulsions present a very thick shell (>100 nm) comprised of densely packed CNF. OCNF-stabilized emulsions proved to be salt responsive, influencing the droplet aggregation and ultimately the gel properties of the emulsions, while CCNF emulsions, on the other hand, showed very little salt-dependent behavior. |
