Sheima, Yauhen published the artcileTransient Elastomers with High Dielectric Permittivity for Actuators, Sensors, and Beyond, Computed Properties of 7575-23-7, the main research area is elastomer dielec permittivity actuator sensor; dielectric constant; high dielectric permittivity elastomers; low-voltage actuation; transient actuators; transient dielectrics; transient electronics; transient sensors.
Dielec. elastomers (DEs) are key materials in actuators, sensors, energy harvesters, and stretchable electronics. These devices find applications in important emerging fields such as personalized medicine, renewable energy, and soft robotics. However, even after years of research, it is still a great challenge to achieve DEs with increased dielec. permittivity and fast recovery of initial shape when subjected to mech. and elec. stress. Addnl., high dielec. permittivity elastomers that show reliable performance but disintegrate under normal environmental conditions are not known. Here, we show that polysiloxanes modified with amide groups give elastomers with a dielec. permittivity of 21, which is 7 times higher than regular silicone rubber, a strain at break that can reach 150%, and a mech. loss factor tan δ below 0.05 at low frequencies. Actuators constructed from these elastomers respond to a low elec. field of 6.2 V μm-1, giving reliable lateral actuation of 4% for more than 30 000 cycles at 5 Hz. One survived 450 000 cycles at 10 Hz and 3.6 V μm-1. The best actuator shows 10% lateral strain at 7.5 V μm-1. Capacitive sensors offer a more than a 6-fold increase in sensitivity compared to standard silicone elastomers. The disintegrated material can be re-crosslinked when heated to elevated temperatures In the future, our material could be used as dielec. in transient actuators, sensors, security devices, and disposable electronic patches for health monitoring.
ACS Applied Materials & Interfaces published new progress about Actuators. 7575-23-7 belongs to class alcohols-buliding-blocks, name is Pentaerythritol tetra(3-mercaptopropionate), and the molecular formula is C17H28O8S4, Computed Properties of 7575-23-7.
Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts