Emulsion Polymerization Using an Amphiphilic Oligoether Ionic Liquid as a Surfactant

Affiliation
Centro de Investigación en Química Aplicada (CIQA), Blvd. Enrique Reyna #140, 25294 Saltillo, Mexico
Jiménez-Victoria, Ariadna;
ORCID
0000-0001-9928-942X
Affiliation
Centro de Investigación en Química Aplicada (CIQA), Blvd. Enrique Reyna #140, 25294 Saltillo, Mexico
Peralta-Rodríguez, René D.;
ORCID
0000-0001-9623-575X
Affiliation
Centro de Investigación en Química Aplicada (CIQA), Blvd. Enrique Reyna #140, 25294 Saltillo, Mexico
Saldívar-Guerra, Enrique;
Affiliation
Centro de Investigación en Química Aplicada (CIQA), Blvd. Enrique Reyna #140, 25294 Saltillo, Mexico
Cortez-Mazatán, Gladis Y.;
Affiliation
Centro de Investigación en Química Aplicada (CIQA), Blvd. Enrique Reyna #140, 25294 Saltillo, Mexico
Soriano-Melgar, Lluvia de Abril A.;
GND
1302403443
Affiliation
Friedrich Schiller University Jena
Guerrero-Sánchez, Carlos

We investigate the use of an ionic liquid (IL) as a surfactant in emulsion polymerization (EP) reactions. ILs have been proposed as surfactants for micellar dispersions, emulsions, micro-emulsions and suspensions. Thus, it is important to acquire knowledge of the application of ILs in heterogeneous polymerizations. We selected the amphiphile cationic oligoether IoLiLyte C1EG™ as an IL for this purpose and compared its performance to that of the conventional surfactant dodecyl trimethyl ammonium bromide (DTAB) in the EP of methyl methacrylate and styrene. After we found the proper concentration range of the IL, this amphiphile showed similar polymerization rates to those observed with DTAB for both monomers. The evolution of monomer conversion and the final average diameter of formed polymeric particles were similar for both evaluated surfactants, demonstrating their capability to stabilize the EPs of the investigated monomers. We simulated the evolution of monomer conversion and particle size using a conventional model for emulsion polymerization, which showed good agreement with the experimental data, suggesting that the EP with this IL follows Smith-Ewart kinetics.

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