Detailed Analysis of the Influencing Parameters on the Self-Healing Behavior of Dynamic Urea-Crosslinked Poly(methacrylate)s

• Main Authors: Marcus Abend, Stefan Zechel, Ulrich S. Schubert, Martin D. Hager
• Format: Article
• Language: English
• Published: MDPI AG 2019-10-01
• Series: Molecules
• Subjects: self-healing polymers; dynamic covalent bonds; characterization of self-healing; poly(methacrylate)s
• Online Access: https://www.mdpi.com/1420-3049/24/19/3597

For this paper, the self-healing ability of poly(methacrylate)s crosslinked via reversible urea bonds was studied in detail. In this context, the effects of healing time and temperature on the healing process were investigated. Furthermore, the impact of the size of the damage (i.e., area of the scratch) was monitored. Aging processes, counteracting the self-healing process, result in a decrease in the mechanical performance. This effect diminishes the healing ability. Consequently, the current study is a first approach towards a detailed analysis of self-healing polymers regarding the influencing parameters of the healing process, considering also possible aging processes for thermo-reversible polymer networks.