On April 14, 2021, Rong, Jinchuang; Zhong, Jiang; Yan, Wanlong; Liu, Maochen; Zhang, Yalei; Qiao, Yongluo; Fu, Changqing; Gao, Fei; Shen, Liang; He, Haifeng published an article.Product Details of 517-23-7 The title of the article was Study on waterborne self-healing polyurethane with dual dynamic units of quadruple hydrogen bonding and disulfide bonds. And the article contained the following:
The novel self-healable waterborne polyurethanes (WPU) with the synergistic reversible units of aliphatic disulfide bonds and quadruple hydrogen bonding have been successfully prepared The ureidopyrimidone (UPy) functional motifs were introduced into polymer backbones of polyurethane, where also placed the reversible disulfide bonds. The quadruple hydrogen bonds of UPy groups endowed the material a strong phys. crosslinking network, which provided a superior Young’s moduli. The features of dual dynamic structure could also produce a relatively low active energy of 36.1 kJ/mol, resulting in a good self-repairing efficiency of 94% under a mild condition. Furthermore, the influence of self-healing time and different repairing temperature on the healed performance was also systematically investigated. In order to describe the self-healing progress of multiple dynamic units, a phys. model was used to study the evolution of self-repairing efficiency with variable healing time, indicating that quadruple H-bonding and disulfide bonds predominantly supported time dependent reconstruction of phys. crosslinking network to recover the original mech. property. The experimental process involved the reaction of 3-Acetyldihydrofuran-2(3H)-one(cas: 517-23-7).Product Details of 517-23-7
The Article related to waterborne self healing polyurethane, Chemistry of Synthetic High Polymers: Organic Condensation and Step Polymerization and other aspects.Product Details of 517-23-7
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