Poly(ethylene glycol) Diacrylate Based Electro-Active Ionic Elastomer

by Chathuranga Prageeth Hemantha Rajapaksha, Chenrun Feng, Camilo Piedrahita, Jinwei Cao, Vikash Kaphle, Björn Lüssem, Thein Kyu, and Antal Jákli


Preparation and low voltage induced bending (converse flexoelectricity) of crosslinked poly(ethylene glycol) diacrylate (PEGDA), modified with thiosiloxane (TS) and ionic liquid (1-hexyl-3-methylimidazolium hexafluorophosphate) (IL) are reported. In between 2µm PEDOT:PSS electrodes at 1 V, it provides durable (95% retention under 5000 cycles) and relatively fast (2 s switching time) actuation with the second largest strain observed so far in ionic electro-active polymers (iEAPs). In between 40 nm gold electrodes under 8 V DC voltage, the film can be completely curled up (270° bending angle) with 6% strain that, to the best of the knowledge, is unpreceded among iEAPs. These results render great potential for the TS/PEGDA/IL based electro-active actuators for soft robotic applications.


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POSTED: Wednesday, February 26, 2020 - 1:51pm
UPDATED: Wednesday, February 26, 2020 - 2:18pm