Publication

Morphology of polymer/clay latex particles synthesized by miniemulsion polymerization: Modeling and experimental results

John Christopher Plummer
2010
Journal Articles

Abstract

BA/MMA (90:10 wt.-%) were copolymerized in the presence of two different organomodified clays (C30B and CMA16) and 1.6-2.6wbm.-% surfactants. The effect of the compatibility of the organoclay in the monomer mixture on the morphology of hybrid polymer/clay particles was determined using TEM. The resulting morphologies were compared with the prediction of a Monte-Carlo simulation that determined the equilibrium morphology of monomer/clay hybrid miniemulsion droplets. The model predicted encapsulated morphologies only when the organoclay presented low clay/monomer and high clay/water interfacial tensions. C30B and CMA16 did not fulfill these conditions and provided a preferential surface location of the platelets on the polymer/water interphase as predicted by the model. © 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

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https://infoscience.epfl.ch/entities/publication/505cabd5-7e9c-4ba7-9579-5013382ce6db

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John Christopher Plummer
2010
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/505cabd5-7e9c-4ba7-9579-5013382ce6db

About this result

Related concepts (27)

Suspension (chemistry)

In chemistry, a suspension is a heterogeneous mixture of a fluid that contains solid particles sufficiently large for sedimentation. The particles may be visible to the naked eye, usually must be larger than one micrometer, and will eventually settle, although the mixture is only classified as a suspension when and while the particles have not settled out. A suspension is a heterogeneous mixture in which the solid particles do not dissolve, but get suspended throughout the bulk of the solvent, left floating around freely in the medium.

Colloid

A colloid is a mixture in which one substance consisting of microscopically dispersed insoluble particles is suspended throughout another substance. Some definitions specify that the particles must be dispersed in a liquid, while others extend the definition to include substances like aerosols and gels. The term colloidal suspension refers unambiguously to the overall mixture (although a narrower sense of the word suspension is distinguished from colloids by larger particle size).

Dispersion (chemistry)

A dispersion is a system in which distributed particles of one material are dispersed in a continuous phase of another material. The two phases may be in the same or different states of matter. Dispersions are classified in a number of different ways, including how large the particles are in relation to the particles of the continuous phase, whether or not precipitation occurs, and the presence of Brownian motion. In general, dispersions of particles sufficiently large for sedimentation are called suspensions, while those of smaller particles are called colloids and solutions.

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Morphology of polymer/clay latex particles synthesized by miniemulsion polymerization: Modeling and experimental results

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