Chen, Guancong published the artcileRapidly and repeatedly reprogrammable liquid crystalline elastomer via shape memory mechanism, Product Details of C17H28O8S4, the main research area is reprogrammable liquid crystalline acrylic elastomer shape memory property; liquid crystalline elastomers; mesogen alignment; reversible actuators; shape memory polymers.
Realization of muscle-like actuation for a liquid crystal elastomer (LCE) requires mesogen alignment, which is typically achieved/fixed chem. during the synthesis. Post-synthesis regulation of the alignment in a convenient and repeatable manner is highly desirable yet challenging. Here, a dual-phase LCE network is designed and synthesized with a crystalline melting transition above a liquid crystalline transition. The crystalline phase can serve as an ”alignment frame” to fix any mech. deformation via a shape memory mechanism, leading to corresponding mesogen alignment in the liquid crystalline phase. The alignment can be erased by melting, which can be the starting point for reprogramming. This strategy that relies on a phys. shape memory transition for mesogen alignment permits repeated reprogramming in a timescale of seconds, in stark contrast to typical methods. It further leads to unusual versatility in designing 3D printed LCE with unlimited programmable actuation modes.
Advanced Materials (Weinheim, Germany) 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, Product Details of C17H28O8S4.
Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts