Abstracts Book - IMRC 2018

• SB1-P091
EMULSION POLYMERIZATION EMPLOYING EUTECTIC LIQUIDS
Itzel Alejandra Quintanar Arellano 1 , Jorge Herrera Ordóñez 1 , Josue David Mota Morales 1 , Juan
Francisco Pérez Robles 2
1 Universidad Nacional Autónoma de México, Centro de Fisica Aplicada y Tecnologia Avanzada,
Mexico. 2 Centro de Investigación y de Estudios Avanzados del IPN - CINVESTAV, Unidad
Querétaro, Mexico.
Emulsion polymerization using water as dispersant medium are commonly used
because it has been the subject of kinetic and morphological study of the
particles obtained. The polymers obtained by conventional emulsion
polymerization have a spherical shape and specific sizes; by means of the study
of the substitution of the aqueous medium for another one, the nanoparticles
of non-spherical shaped polymers are obtained, since according to the
literature.
In the last decade, non-aqueous emulsion polymerizations were begun, with the
intention of expanding the operating temperatures of the conventional process
that is limited by the melting and boiling point of the water.
A means to replace the water in the emulsion polymerization system are those
known as Deep Eutectic Solvents(DESs). DESs are a mixture of solids compounds
that form liquids due to a large depression of the melting point, where this
depression is caused by the formation of hydrogen bonds.
This work proposes as a dispersing medium a DES-based on choline chloride
and urea, because as water is a polar solvent, however, the physical properties
change drastically, such as viscosity, which is two orders of magnitude greater
than water, which can affect the size of the nanoparticles as well as their
morphology. The use of a DES also modifies the chemical kinetics, where the
intervals that form the system can be affected, both in the absorption and
desorption of free radicals and in the swelling of micelles. The conversion rate
ranges around 80% wt, this is due to the Brownian movement observed in the
system, which undergoes slight alterations due to the fact that it is not water, in
the case of the water, the conversion rate is approximately 95%wt, although this
will depend on the system temperature.
Acknowledgment:
Thanks to CONACYT for the scholarship awarded for the completion of my
masters degree, to CINVESTAV unit Querétaro, to the Center for Research in