2026-05-06T18:32:25Zhttps://datadoi.ee/oai/request

oai:datadoi.ee:33/3362021-11-16T08:37:23Zcom_33_403com_33_3col_33_404

Understanding the Behavior of Fully Non-Toxic Polypyrrole-Gelatin and Polypyrrole-PVdF Soft Actuators with Choline Ionic Liquids Elhi, Fred Karu, Karl Rinne, Pille Nadel, Kadi-Anne Järvekülg, Martin Aabloo, Alvo Tamm, Tarmo Ivaništšev, Vladislav Põhako-Esko, Kaija polypyrrole actuator conductive polymer gelatin choline ionic liquid molecular dynamics density functional theory Smart and soft electroactive polymer actuators as building blocks for soft robotics have many beneficial properties that could make them useful in future biomimetic and biomedical applications. Gelatin—a material exploited for medical applications—can be used to make a fully biologically benign soft electroactive polymer actuator that provides high performance and has been shown to be harmless. In our study, these polypyrrole-gelatin trilayer actuators with choline acetate and choline isobutyrate showed the highest strain difference and highest efficiency in strain difference to charge density ratios compared to a reference system containing imidazolium-based ionic liquid and a traditional polyvinylidene fluoride (PVdF) membrane material. As neither the relative ion sizes nor the measured parameters of the ionic liquids could explain their behavior in the actuators, molecular dynamics simulations and density functional theory calculations were conducted. Strong cation-cation clustering was found and the radial distribution functions provided further insight into the topic, showing that the cation-cation correlation peak height is a good predictor of strain difference of the actuators. 2021-03-30T09:32:20Z 2021-03-30T09:32:20Z 2020-05-21 dataset related to publication info:eu-repo/semantics/dataset https://datadoi.ee/handle/33/336 http://dx.doi.org/10.23673/re-278 H2020/793377 doi:10.3390/act9020040 info:eu-repo/semantics/restrictedAccess application/zip