coacervate


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Related to coacervate: coacervate theory

coacervate

[kō′as·ər‚vāt]
(chemistry)
An aggregate of colloidal droplets bound together by the force of electrostatic attraction.
References in periodicals archive ?
Sashie's coacervates are often depicted as orb-shaped amalgams of manmade objects suspended over cityscapes.
Lochhead, University of Southern Mississippi, reported on the correlation of the physicochemical behavior of coacervates normalized with critical overlap concentration of a polymer.
The compositions for producing stable coacervate droplets, at these initial concentrations, were determined by adding 0.
Our results show that as the concentration of NaCl increased, the amount of coacervate formed decreased in the 'ion-exchange' region but increased in the large micelle region.
As the pH was altered and crosslinking occurred a dense coacervate shell encapsulated the core material.
Hydrophobically modified cationic polymers were also studied with respect to the structure of the lyotropic association colloid within the complex coacervate.
It is comprised of a cationic polymer comprising cationic protonated amine or quaternary' ammonium functionalities comprising dialkylaminoalkyl acrylates, dialkylaminoalkyl methacrylates, monoalkylaminoalkyl acrylates, monoalkylamino alkyl methacrylates, trialkyl methacryloxyalkyl ammonium sails, trialkyl acryloxyalkyl ammonium salts, diallyl quaternary ammonium salts, pyridinium moeities, imidazolium moeities, quaternized pyrrolidone moeities, and mixture thereof; an encapsulated anionic colorant selected from the group consisting of FD&C Yellow 5, D&CYellow 10, D&C Red 33, D&C Green 5, D&CYellow 8, D&C Red 28, and mixtures thereof; and an aqueous carrier; wherein the cationic polymer forms a coacervate with the encapsulated anionic colorant.
Copolymers of diallyldimethylammonium chloride and acrylamide have recently been advanced as coacervate depositing agents for skin, with the added advantage that they provide desired low viscosity/theology to the personal care compositions in which they are included.
The higher molecular weight polymer improves bridging of the silicone in the coacervate to assist deposition while the increased charge reduced looping on the surface to direct the silicone to the hair and also hold hair in its place.
Conventional conditioning shampoos work by a mechanism in which cationic polymers interact with the anionic detersive surfactants to phase separate as a coacervate during the rinse stage.