Ohzono, Takuya published the artcileDynamic Manipulation of Friction in Smart Textile Composites of Liquid-Crystal Elastomers, Category: alcohols-buliding-blocks, the main research area is interfacial friction nematic liquid crystal elastomer polyester smart textile.
Smart surfaces that reversibly change the interfacial friction coefficients in response to external stimuli enable a wide range of applications, such as grips, seals, brake pads, packaging films, and fabrics. Here, a new concept of such a smart frictional system is reported: a composite film of a plain-weave polyester textile sheet and a thermoresponsive nematic liquid crystalline elastomer (LCE). The composite is deployed with retractable microundulations of the elastomer inside each weave mesh, enabling dramatic changes of the contact interface with the opposing surface on LCE actuation, which is induced, e.g., by a change in temperature (T). At room T, the protruding viscoelastic parts of LCE in the nematic phase make contact with the opposing flat surface, resulting in a very high friction. At an elevated T (≈50°C, isotropic phase), the undulations of LCE surface are retracted within the thickness of the textile, and the contacts are limited to small regions around overlapping textile fibers, lowering the friction dramatically. This effect is fully reversible on heating/cooling cycles. The surface undulations are spontaneous, i.e., fabricated without any lithog. or alignment techniques. The present composite opens a new way for the application of sheets/films with switchable friction enabled by stimuli-responsive LCEs.
Advanced Materials Interfaces published new progress about Breaking strength. 7575-23-7 belongs to class alcohols-buliding-blocks, name is Pentaerythritol tetra(3-mercaptopropionate), and the molecular formula is C17H28O8S4, Category: alcohols-buliding-blocks.
Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts