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

Abstract

Aqueous-two phase systems (ATPS) and water-in-water (w/w) emulsions are a major topic in chemistry and biology, mainly due to their biocompatibility and various applications. In here, the ATPS formed from...

Recent advances on water-in-water emulsions in segregative systems of two water-soluble polymers

“…These micelles had a preferential affinity for the polyethylene glycol (PEG) and consequently stabilized D/P emulsions that are highly sensitive to temperature, switching on/off the stability of emulsions [29]. In a more recent work, they designed pH-sensitive W/W emulsions by using pullulan and poly (N,N-dimethylacrylamide) (PDMA), as two incompatible polymers [31,32]. Pullulan-in-PDMA emulsions were stabilized with poly(2-(dimethylamino)ethyl methacrylate)-b-poly(oligo(ethylene glycol) methyl ether methacrylate), which forms polymer micelles (aggregates of polymer chains) as a function of pH [31].…”

“…In a more recent work, they designed pH-sensitive W/W emulsions by using pullulan and poly (N,N-dimethylacrylamide) (PDMA), as two incompatible polymers [31,32]. Pullulan-in-PDMA emulsions were stabilized with poly(2-(dimethylamino)ethyl methacrylate)-b-poly(oligo(ethylene glycol) methyl ether methacrylate), which forms polymer micelles (aggregates of polymer chains) as a function of pH [31].…”

An environmentally friendly synergistic stabilization of emulsions using an ABC macrosurfactant and hydroxypropyl methylcellulose

“…1 Another type of emulsions, which received considerable attention owing to their increased biocompatibility, is water-in-water (W/W) emulsions, which are formed by two incompatible aqueous solutions of polymers. [2][3][4] Pickering emulsions, where stabilization is achieved via solid particles, have also been widely reported in the literature. [5][6][7] Emulsions find use in several applications, such as in food industry, 8 and enhanced oil recovery.…”

Thermoresponsive behaviour of poly(N,N-diethylacrylamide) in aqueous two-phase systems

“…a reversible micellisation of a double hydrophilic block copolymer containing a thermoresponsive block or by employing thermoresponsive microgels. 39,40 Another stimulus that has been employed is pH, as introduced by stabilisers like linear polyelectrolytes, 41 pH responsive double hydrophilic block copolymers, 42 polysac-charide-coated protein particles 43 or pH responsive microgels. 44 Also light has been used as a stimulus to break w/w emulsions.…”