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A self-healing and recyclable polyurethane/halloysite nanocomposite based on thermoreversible Diels-Alder reaction

2020; Elsevier BV; Volume: 206; Linguagem: Inglês

10.1016/j.polymer.2020.122894

1873-2291

Changhong Lin, Huan Ge, Tianle Wang, Min Huang, Puyou Ying, Ping Zhang, Jianbo Wu, Shi‐Bin Ren, Vladimir Levchenko,

Clay minerals and soil interactions

The realization of recyclable materials is an urgent problem to be solved for extending practical applications in industry. Herein, a simple method was proposed to prepared the recyclable materials thorough dynamic reversible chemistry. In this work, we design the recyclable and self-healing polyurethane based on the thermoreversible dynamic Diels-Alder reaction. In addition, the Halloysite nanotubes (HNTs) were introduced into the system to improve the thermal properties, mechanical properties of polyurethane nanocomposites (PUDM/HNTs). The tensile tests showed that the HNTs can significantly improved the mechanical properties of nanocomposites. The healing efficiency above 90% on average was achieved which was determined by the recovery of breaking strength. Besides, the composites exhibited outstanding reprocessability via thermally induced. Therefore, Such excellent recyclable performance and self-healing ability give the polyurethane materials an opportunity to have great potential in the fields of save-energy, friendly-environment materials.