Yang, Jeh-Chang published the artcileOn the nature of shape-fixing in semicrystalline shape-memory networks, Formula: C17H28O8S4, the main research area is phenolthiazine reinforced polymer composite shape memory network mech property.
Crystallization of polymer strands within elastically strained cross-linked networks can lower tension, leading to stabilization of mech. deformed states. This process, referred to as shape-fixing, is sensitive to thermomech. path because both mech. strain and thermal undercooling affect crystallization kinetics. In the present study, shape-fixing of a well-defined poly(caprolactone) network is examined at fixed strains ranging from 25 to 100%. Isothermal crystallization kinetics were studied using wide angle X-ray scattering while simultaneously monitoring tension loss. Plots of tensile stress vs. degree of crystallization show that significant stress reduction occurs at only a few percent crystallinity (<0.05). The development of young's modulus under identical conditions was evaluated, and results are combined to estimate the shape-fixity at different crystallization conditions and times. This study contributes to understanding the interrelationship between crystallization, stress reduction, and material stiffening to support further development of semicrystalline shape-memory networks. Polymer Crystallization published new progress about Annealing. 7575-23-7 belongs to class alcohols-buliding-blocks, name is Pentaerythritol tetra(3-mercaptopropionate), and the molecular formula is C17H28O8S4, Formula: C17H28O8S4.
Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts