Modeling emulsion polymerization stabilized by polymerizable surfactants

Abstract

A mathematical model for seeded emulsion polymerization stabilized with polymerizable surfactants (surfmers) was developed. The model accounts for the main features of the process and provides information about surfmer conversion as well as surfmer burying inside the polymer particles. The model was validated by comparing its predictions with the experimental results for the effect of particle size, surface properties of the surfmer, and type of initiator on surfmer conversion. The effect of surfmer reactivity on surfmer incorporation to the polymer backbone is also discussed. © 2001 John Wiley & Sons, Inc. J Polym Sci A: Polym Chem 39: 585–595, 2001

Surfactantes reativos não-iônicos em polimerização em emulsão de látices de acetato de vinila - vinil neodecanoato: influência nas propriedades de barreira à água

“…Os resultados obtidos com o Emulsogen R208 e Emulsogen R307 corroboram com os resultados obtidos nos testes de estabilidade eletrolítica, ou seja, o alto valor da CMC atribuído a estes dois surfactantes sugere que eles tenham preferencialmente polimerizado na fase aquosa [23] e não estejam ligados a cadeia polimérica. Desta forma, durante a fase de coalescência do filme pode ter havido uma migração para a superfície do filme criando assim canais hidrofílicos [24] que possibilitam a maior absorção de água.…”

Waterborne Core-shell Pressure Sensitive Adhesive (PSA) Based on Polymeric Nano-dispersant

“…They are commonly used as the base resins in paint and lamination adhesives due to their † Corresponding author: In-Joo Chin (ichin@inha.ac.kr) good resistance to weather, water, alkalis, contamination, and chemical reactions [1]. An emulsifier is required as a supplemental agent in water-based acrylic emulsion polymerization to obtain the stable and desired particle sizes [2][3][4]. However, its use is problematic in existing emulsion polymerizations.…”

Modeling the emulsion polymerization of amino-functionalized latex particles

“…Therefore, a mathematical model, which is based on that of de la Cal and Asua [4] for seeded emulsion polymerization stabilized by polymerizable surfactants, was developed. The model presented here considers the fact that the polymeric particles synthesized are also charged polymeric colloids.…”

“…With this radical profile in the polymer particles the average concentration of radicals, as well as the consumption of each monomer (S and A), in the core and in the outer shell can be quantified separately. Methods to calculate this concentration profile have been proposed [5,6], but for the purposes of the present work, the arbitrary profile used by de la Cal and Asua [4] is used:…”

“…This model differs from that proposed by de la Cal and Asua [4] in the thickness of the shell in which the copolymerization takes place. For de la Cal and Asua, the surfmer polymerization occurs in the outer shell with a constant value of thickness, and in this work the value of the thickness changes as copolymerization proceeds, increasing together with the copolymer formed.…”