Boothby, Jennifer M. published the artcileEffects of network structure on the mechanical and thermal responses of liquid crystal elastomers, Synthetic Route of 7575-23-7, the main research area is liquid crystal elastomer mech thermal property mol dynamics simulation.
Thermoresponsive liquid crystal elastomers (LCEs) have a high potential to be used for actuation applications. There has been a substantial amount of literature on synthesis of different LCE networks and their corresponding performance. However, much of the prior work focuses on the exptl. aspect of the effects of mesogenic species, crosslinkers, and spacers on the thermal and mech. response of LCE. Here we have built on these prior studies, and expanded understanding of LCE work capacity and thermal properties to the mol. and network structures by comparing the exptl. results to the theor. predicted values based on a random walk model derived from classical rubber elasticity. A previously developed two stage thiol-acrylate LCE chem. was used as the model system. On the basis of increasing the chain entropy, we varied crosslinker concentration, crosslinker functionality, and liquid crystal mesogen length and showed that average mol. weight between crosslinks and mol. weight of the Kuhn segment play important roles in controlling the work capacity. The rubber elastic model predicted network performance agreed reasonably well with the exptl. results.
Multifunctional Materials published new progress about Crosslink density. 7575-23-7 belongs to class alcohols-buliding-blocks, name is Pentaerythritol tetra(3-mercaptopropionate), and the molecular formula is C17H28O8S4, Synthetic Route of 7575-23-7.
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