Modified Rheokinetic Technique to Enhance the Understanding of Microcapsule-Based Self-Healing Polymers
- Authors
- Mauldin, Timothy C.; Leonard, Joshua; Earl, Kelly; Lee, Jong Keun; Kessler, Michael R.
- Issue Date
- Mar-2012
- Publisher
- AMER CHEMICAL SOC
- Keywords
- self-healing autonomic healing; crack-healing; rheokinetic; rheology; ROMP
- Citation
- ACS APPLIED MATERIALS & INTERFACES, v.4, no.3, pp 1831 - 1837
- Pages
- 7
- Journal Title
- ACS APPLIED MATERIALS & INTERFACES
- Volume
- 4
- Number
- 3
- Start Page
- 1831
- End Page
- 1837
- URI
- https://scholarworks.bwise.kr/kumoh/handle/2020.sw.kumoh/28150
- DOI
- 10.1021/am300133n
- ISSN
- 1944-8244
1944-8252
- Abstract
- A modified rheokinetic technique was developed to monitor the polymerization of healing monomers in a microcapsule-based, self-healing mimicking environment. Using this modified technique, monomers active toward ring-opening metathesis polymerization (ROMP) were either identified or disregarded as candidates for incorporation in self-healing polymers. The effect of initiator loading on the quality and speed of healing was also studied. It was observed that self-healing polymers have upper and lower temperature limits between which the healing mechanism performs at optimal levels. Also, a study of the quality of healing cracks of different thicknesses was performed, and it was discovered that above a critical crack thickness value, the quality of self-healing diminishes substantially; reasons for this phenomenon are discussed in detail.
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