Thermo-induced inversion of water-in-water emulsion stability by bis-hydrophilic microgels

pH sensitive water-in-water emulsions based on the pullulan and poly(N,N-dimethylacrylamide) aqueous two-phase system

“…latex particles, 25 polydopamine particles 26,27 or aggregated double hydrophilic block copolymers. 28 One strategy for the stabilisation of w/w emulsions is to work with external triggers, for example, temperature 28,29 or pH-value. 30,31 That avenue leads to sensitive w/w emulsions, depending on a defined temperature or pH-value.…”

Tunable Janus geometric morphology from aqueous two-phase systems on a superhydrophobic substrate

“…Interactions between two incompatible polymers in their mixed aqueous solution can lead to the formation of two distinct thermodynamic phases that are both aqueous, but each predominantly harboring one of the polymer types-aqueous two-phase system (ATPS). [40][41][42][43] The phase separation of such aqueous mixture is attributed to the high molecular weight of the polymers combined with the unfavorable interaction between their segments. [44][45][46] To demonstrate this liquid-liquid phase separation visually, we mixed 10% w/w PEG 20k (20 000 g mol −1 ) and 15% w/w DEX 450-650k (450 000-650 000 g mol −1 ) aqueous solutions at the volume ratio of 1 : 1 in a vial.…”

Interaction between stabilized droplets of different phases in the same continuous phase of an aqueous three-phase system

“…11 In recent studies, bis-hydrophilic microgels formed by crosslinking poly(N-isopropylacrylamide) (pNIPAM) with grafted dextran (DEX) were shown to have interesting effects on the stability of binary W/W emulsions composed of DEX and PEO. Merland et al 12 found that these bis-hydrophilic MG adsorb at the interface of the two phases and improve the stability of emulsions of DEX droplets in a continuous PEO phase (D/P). Waldmann et al 13 investigated the effect of the MG composition on the stability by changing the fraction of DEX in the MG.…”