Luo, Chaoqian published the artcileReal-Time Alignment and Reorientation of Polymer Chains in Liquid Crystal Elastomers, Application In Synthesis of 7575-23-7, the main research area is real alignment reorientation polymer chain liquid crystal elastomer; Fourier-transform infrared spectroscopy; Mesogen alignment; liquid crystal elastomer; polarized optimal measurements; real-time characterization; reorientation.
Liquid crystal elastomers (LCEs) exhibit soft elasticity due to the alignment and reorientation of mesogens upon mech. loading, which provides addnl. mechanisms to absorb and dissipate energy. This enhanced response makes LCEs potentially transformative materials for biomedical devices, tissue replacements, and protective equipment. However, there is a critical knowledge gap in understanding the highly rate-dependent dissipative behaviors of LCEs due to the lack of real-time characterization techniques that probe the microscale network structure and link it to the mech. deformation of LCEs. In this work, we employ in situ optical measurements to evaluate the alignment and reorientation degree of mesogens in LCEs. The data are correlated to the quant. phys. anal. using polarized Fourier-transform IR spectroscopy. The time scale of mesogen alignment is determined at different strain levels and loading rates. The mesogen reorientation kinetics is characterized to establish its relationship with the macroscale tensile strain, and compared to theor. predictions. Overall, this work provides the first detailed study on the time-dependent evolution of mesogen alignment and reorientation in deformed LCEs. It also provides an effective and more accessible approach for other researchers to investigate the structural-property relationships of different types of polymers.
ACS Applied Materials & Interfaces 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, Application In Synthesis of 7575-23-7.
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