An Ultrastrong and Highly Stretchable Polyurethane Elastomer Enabled by a Zipper‐Like Ring‐Sliding Effect

• Published in: Advanced materials (Weinheim) Vol. 32; no. 23; pp. e2000345 - n/a
• Main Authors: Shi, Chen‐Yu, Zhang, Qi, Yu, Cheng‐Yuan, Rao, Si‐Jia, Yang, Shun, Tian, He, Qu, Da‐Hui
• Format: Journal Article
• Language: English
• Published: Germany Wiley Subscription Services, Inc 01.06.2020
• Subjects: Bond strength; Bonding strength; Crosslinking; dry networks; Elastomers; Elongation; Materials science; Mechanical properties; Molecular machines; Molecular structure; Polyurethane resins; ring‐sliding effects; Rotaxanes; Sliding; Solvents; Stretchability; supramolecular polymers; Tradeoffs; dry networks; supramolecular polymers; elastomers; ring-sliding effects

Elastomers with excellent mechanical properties are in substantial demand for various applications, but there is always a tradeoff between their mechanical strength and stretchability. For example, partially replacing strong covalent crosslinking by weak sacrificial bonds can enhance the stretchabil...