The morphology of the monomer–polymer particle in styrene emulsion polymerization

Grancio, M. R.; Williams, D. J.

doi:10.1002/pol.1970.150080927

Cited by 165 publications

(66 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For vinyl acetate, experimental evidence has also been found that the conversion range ''appears to be most closely related to the (particles) surface area''. [153] Williams and co-workers [154][155][156][157] published a great deal of experimental data showing that during stage two of styrene emulsion polymerization the average molecular weight in the case of monodisperse particles increases contrary to the expected constancy. These results seeded doubts regarding the homogeneity assumption of the Smith-Ewart theory and led to the conclusion that rather core-shell like polymerization happens.…”

Section: Microscopic Modelingmentioning

confidence: 65%

Molecular Aspects of Radical Polymerizations—The Propagation Frequency

Tauer

Hernández

2010

Macromol. Rapid Commun.

View full text Add to dashboard Cite

The product of the propagation rate constant and monomer concentration is a central issue of radical polymerization. Both quantities are strongly interrelated as the determination of a reliable value of the propagation rate constant requires exact knowledge of the monomer concentration. Even for homogeneous polymerization conditions, exact knowledge of the monomer concentration at the reaction site from the molecular perspective is not trivial. For emulsion polymerizations the situation is additionally complicated by mass transfer events and colloid-chemical effects. Molecular modeling appears as an attractive alternative or complement to the deterministic kinetic description of radical polymerizations.

show abstract

Section: Microscopic Modelingmentioning

confidence: 65%

Molecular Aspects of Radical Polymerizations—The Propagation Frequency

Tauer

Hernández

2010

Macromol. Rapid Commun.

View full text Add to dashboard Cite

show abstract

“…Clearly, the results of this study support the idea of interfacial polymerization, which has been a matter of ongoing discussion for several decades. [24][25][26][27][28][29][30] …”

Section: Resultsmentioning

confidence: 99%

Sorption of Hydrophobic Organic Compounds by Aqueous Latexes

Tauer

Nozari

Ali

et al. 2005

Macromol. Rapid Commun.

View full text Add to dashboard Cite

Summary: Optical absorption measurements are used for the first time to investigate the uptake of pure organic solvents or solutions by latex particles. Sorption into glassy polymer particles is a two‐stage process with distinctly different characteristic times, which reflects that an initial softening of the outer particle layer facilitates further uptake. The sorption of solutions containing highly water‐insoluble compounds allows the preparation of composite nanoparticles, which are hardly accessible by other routes.Photograph of the neat 100 nm latex (right) particles and the particles after dying by sorption with the hydrophobic pigment Sudan IV (left).magnified imagePhotograph of the neat 100 nm latex (right) particles and the particles after dying by sorption with the hydrophobic pigment Sudan IV (left).

show abstract

“…Considering monomer-soluble initiators, this may be the case of a monomer layer around a polymer particle [15] or the encapsulation of a non-solvent by a polymer shell (hollow particles). [16,17] Also for this case, an analytical solution is difficult to obtain but the rate coefficients can be easily obtained from BD simulations.…”

Section: Generation Of Radicals In the Shell Onlymentioning

confidence: 99%

Radical Desorption Kinetics in Emulsion Polymerization, 2 – Brownian Dynamics Simulation of Radical Desorption in Non‐Homogeneous Particles

Hernández¹,

Tauer²

2010

Macro Theory & Simulations

View full text Add to dashboard Cite

One of the most important events in free‐radical emulsion polymerization is desorption of radicals from the polymer particles to the aqueous phase. Desorption takes place by diffusion of radicals inside the particle toward the surface and transfer to the aqueous phase. The rate of desorption can be determined theoretically for homogeneous spherical particles. For more complex cases, analytical solutions become difficult or impossible to obtain and a numerical approach is better suited for estimating desorption rate coefficients. In this paper, Brownian dynamics simulation is used for the estimation of desorption rate coefficients in emulsion polymerization systems of increased complexity, in particular for non‐homogeneous polymer particles.magnified image

show abstract

The morphology of the monomer–polymer particle in styrene emulsion polymerization

Cited by 165 publications

References 19 publications

Molecular Aspects of Radical Polymerizations—The Propagation Frequency

Molecular Aspects of Radical Polymerizations—The Propagation Frequency

Sorption of Hydrophobic Organic Compounds by Aqueous Latexes

Radical Desorption Kinetics in Emulsion Polymerization, 2 – Brownian Dynamics Simulation of Radical Desorption in Non‐Homogeneous Particles

Contact Info

Product

Resources

About