Journal
JOURNAL OF APPLIED POLYMER SCIENCE
Volume 136, Issue 27, Pages -Publisher
WILEY
DOI: 10.1002/app.47725
Keywords
functionalized graphene; nanocomposites; polysiloxane; self-healing
Categories
Funding
- National Natural Science Foundation of China [51673054]
- Harbin City Science and Technology Innovation Talent Foundation [2017RAYXJ003]
- Shanghai Space Science and Technology Innovation Foundation [SAST2017-114]
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It is a challenge to design nanofiller reinforced self-healing nanocomposites with both improved mechanical properties and highly efficient self-healing properties. In this work, we report a self-healing polysiloxane nanocomposite using furan-functionalized graphene (G-FA) as reinforcement based on Diels-Alder (DA) chemistry. The formed interactions between G-FA and polysiloxane chains were reversible DA bonds, which negligibly affected the nanocomposites healing efficiency. The self-healing polysiloxane nanocomposite with 6% G-FA has a tensile strength of 0.25MPa that was improved by 140% when compared to an elastomer without G-FA. The healable polysiloxane nanocomposite recovered more than 90% of its tensile strength and 98% of its elongation-at-break, demonstrating that the nanocomposite exhibited highly efficient self-healing properties. (c) 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47725.
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