Abstracts Book - IMRC 2018

• SB1-P031
HYDROGELS AS POLYMER ELECTROLYTE FOR USE IN FLEXIBLE
BATTERIES
Carlos Hipólito Antonio Hernández 1,1 , Alberto Rosas Aburto 1,1 , Eduardo Vivaldo Lima 1 , Mylai
Renata Balderas Arteaga 1
1
Universidad Nacional Autónoma de México, Chemical Engineering, Mexico.
Hydrogels are cross-linked polymers that do not dissolve and have a great
capacity to retain compounds and solvents in their structure.
Hydrogels can have different applications such as biological implants, drug
release, biosensors, absorbent materials, production of contact lenses,
electronic devices, etc.
Objective: Synthesize a polymeric network, by free radical polymerization whit
an acrylic monomer unit, ionic monomer and a cross-linker. Their electrical
properties were measured and compared (resistance and charge through the
network) of the swollen material with a solution of lithium ions, when the
composition of cross-linker and ionic monomer was modified
Method: The FRP was made between two glass plates. The networks were
synthesized using 2-Hydroxyethyl methacrylate (HEMA), polystyrene sulfonate
(PSS) as ionic monomer, and Ethylene glycol dimethylacrylate (EGDMA) ass
cross-linker-
3 different concentrations cross-linker (EGDMA) and 3 different contractions
ionic monomer (PSS).were used.
Conclusions: It was observed that the presence of the ionic monomer inside the
network helped to increase the charge through the network and decrease the
resistance of the material. A more cross-linked network helps improve electrical
properties. The biggest amount of ionic monomer, as well as the material with
the highest amount of cross-linker, have a negative impact on the properties.
This may be due to the fact that there is a much closed network with a large
number of hanging groups in the network, which no longer favor the transport
of the ions.