Bioinspired modified graphene oxide/polyurethane composites with rapid self-healing performance and excellent mechanical properties.

ABSTRACT: Self-healing efficiency and mechanical strength are always a pair of mechanical contradictions of a polymer. Herein, a series of novel mussel-inspired modified graphene oxide/polyurethane composites were successfully fabricated via rational molecular design and introducing hyperbranched polymer-modified graphene oxide. The composites exhibit outstanding self-healing performances with a self-healing efficiency of 87.9%. Especially, their self-healing properties possess exceptional water-insensitivity, which presents a high self-healing efficiency of 92.5% under 60 °C water for 2 h and 74.6% under 25 °C water for 6 h. Furthermore, the tensile strength of the composites increased by 107.7% with a high strain of 2170%. In addition, the composites show a remarkable recovery capability of

SUBMITTER: Liu Y 

PROVIDER: S-EPMC8698205 | biostudies-literature | 2021 Apr

REPOSITORIES: biostudies-literature