On May 18, 2021, Wang, Fenfen; Yang, Zhijun; Li, Jian; Zhang, Chi; Sun, Pingchuan published an article.Recommanded Product: 517-23-7 The title of the article was Bioinspired Polyurethane Using Multifunctional Block Modules with Synergistic Dynamic Bonds. And the article contained the following:
Nature embraces an intriguing strategy to create high-performance biomaterials, such as spider silk which presents an unparalleled combination of stiffness, tensile strength, and toughness via hierarchical structures. However, to fabricate synthetic polymers with such excellent properties remains a challenging task. Inspired by the integration of multiblock backbone and densely H-bonding assemblies in spider silk as well as the delicate iron-catecholate complexes in mussel byssus, we proposed a novel mol. design with multifunctional block modules to obtain polymer materials that exhibit excellent mech. property, self-healing ability, and reprocessability. It was achieved by introducing reversible iron-catechol (DOPA-Fe3+) crosslinks and quadruple H-bonds bearing 2-ureido-4-[1H]-pyrimidinone (UPy) dimers as multifunctional blocks into a segmented polyurethane backbone with urethane blocks and semicrystalline polycaprolactone (PCL) blocks. These two types of dynamic crosslinking knots served as the sacrificial bonds to dissipate energy efficiently under external stress burden, endowing the dual phys. crosslinked networks with increased toughness and breaking elongation. Moreover, the DOPA-Fe3+ complexes could increase the crystallization of PCL, leading to remarkably enhanced Young’s modulus and tensile strength. Solid-state NMR revealed the formation of quadruple H-bonds in UPy dimers and the presence of DOPA-Fe3+ complexes, which restricted the mobility of the mobile phase and enhanced the crystallinity of the PCL domain. This work provides a feasible way to develop bioinspired materials with self-healable and reprocessable features, in addition to balanced enhancement of both stiffness and toughness. The experimental process involved the reaction of 3-Acetyldihydrofuran-2(3H)-one(cas: 517-23-7).Recommanded Product: 517-23-7
The Article related to bioinspired polyurethane multifunctional module synergistic dynamic bond, Plastics Fabrication and Uses: Plastic Product Uses and other aspects.Recommanded Product: 517-23-7
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