منابع مشابه
Role of Surfactants in Emulsion Polymerization Polymers by design
The determination of an emulsifier’s adsorption properties under conditions similar to those occurring during emulsion polymerization can provide important information to aid in the selection of the most appropriate surfactant for a given system. Results show that the latex particle size is dependent on the strength of emulsifier adsorption (∆Eads) at the particle/aqueous phase interface and is...
متن کاملColloid Surfactants for Emulsion Stabilization
In the classic solid particle-stabilized emulsions, typically referred to as Pickering emulsions, particles accumulate at the interface between two immiscible liquids and stabilize the emulsion drops against coalescence by forming a mechanically robust monolayer at the liquid-liquid interface. Particles adsorb to the interfaces to form a dense monolayer only under limited conditions that depend...
متن کاملSubmicron polyethylene particles from catalytic emulsion polymerization.
Particles of linear polyethylene (M(n) = (2-3) x 10(3) g x mol(-)(1); M(w)/M(n) = 2-4) obtained by catalytic emulsion polymerization of ethylene possess a nonspherical, lentil-like shape with an average aspect ratio of ca. 10 and diameters from 30 to >300 nm, as determined by TEM and AFM. The particle structure results from a stacking of the lamellae along the one shorter axis of the lentils (i...
متن کاملThe Bdle of Surfactants on the Coalescences of Emulsion Droplets
The coalescence of droplets and their life-time are shown to depend strongly on the surfactant properties _aod concentration. The following more important effects are predicted: 1) With pure liquids the energy is mainly dissipated in the droplets and the velocity of thinning, V, sho~ld not depend on the film viscosity. 2) The surfactant partition coefficient should playa crucial role on the emu...
متن کاملSimultaneous Monitoring of Polymer and Particle Characteristics during Emulsion Polymerization
Emulsion polymerization reactions constitute complex, nonequilibrium systems in which there is strong interaction between polymers, monomers, and the colloidal structures that mediate the reactions. A novel and general method was sought to monitor emulsion polymerization reactions. Instrumentation and methods were hence developed here to achieve, for the first time, simultaneous monitoring of t...
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ژورنال
عنوان ژورنال: Journal of Japan Oil Chemists' Society
سال: 1969
ISSN: 1884-2003
DOI: 10.5650/jos1956.18.574