Hard and soft colloids at fluid interfaces: Adsorption, interactions, assembly & rheology

Fundamental Study of Emulsions Stabilized by Soft and Rigid Particles

“…16 Such microgels are soft particles and have both colloid and polymer characters, 16 which are inherently different from rigid particles, such as polystyrene latexes or silica particles. 17 The soft microgel particles swell in water, and are wellknown for their volume phase transition temperature (VPTT) around 32 . 18 For conventional rigid Pickering stabilizers, it is well documented that the key parameter for controlling emulsion type and stability is the wettability of particles measured by contact angle of the particles at the oil-water interface.…”

Development of a theoretical model for obtaining the whipped emulsions from a dry fat-containing mixture and its experimental verification

“…It depends on the speed of adhesion of solid particles [6], contact angle [7]. In food systems they use cellulose [5], micro gels particles [8]. Fat crystals and crystals of surface-active substances are applied in emulsions [9,10].…”

Sugar beet leaves for functional ingredients

“…These attractive interactions arise from distortions of the fluid interface that surrounds the particles, inducing changes on the surface tension (Binks, 2002). The attractive capillary forces are stronger for soft particles compared with rigid particles due to the large and heterogeneous wetting radius, which is caused by the deformable nature of the particles (Deshmukh et al, 2014;Van Hooghten et al, 2013). In the case of cellulosic particles, their irregular shaped and density might provide certain deformability, resulting in a soft type of particle.…”

“…4 A). Capillary attractions overrule electrostatic repulsions and can result in arrangement of particles at the interface, creating an elastic and stable monolayer (Deshmukh et al, 2014;Madivala et al, 2009). At higher particle concentrations, more fine particles can adsorb at the interface and the particle-particle interactions play an important role in reducing lateral movement of the particles and strengthening the interfacial film (Lopetinsky et al, 2006).…”

“…size, amorphous shape, surface roughness) of the smaller cellulosic particles were expected to provide interfacial activity, since solid particles with some deformability and a rough surface are known to have surface activity (Deshmukh et al, 2014;Madivala et al, 2009). Therefore, the adsorption dynamics of the cellulosic particles were measured at the oil-water interface with a drop tensiometer.…”