Abstract Cyclodextrin is an eco-friendly material with extensive application range. In this work, polyethylene glycol (PEG) modified β-cyclodextrin (CD) was added to a self-healing waterborne polyurethane (SHWPU) through a simple solution blending method. The morphologies, chemical structures, emulsion stability, thermal behavior, mechanical and self-healing properties of the SHWPU/CD nanocomposites were investigated. The results indicated that CDs were well dispersed in the SHWPU matrix and the blended emulsions were stable. The thermal stability of the SHWPU was improved by the addition of CD. When the mass fraction of CD was lower than 5%, the mechanical and self-healing property of the nanocomposites were obviously improved, which indicates the CD modified SHWPU can find potential applications in durable coatings and adhesives in areas, such as textile, wood, aerospace and infrastructure.

中文翻译：

---

具有优异力学和自修复性能的β-环糊精增强水性聚氨酯纳米复合材料的制备

摘要 环糊精是一种应用范围广泛的环保材料。在这项工作中，通过简单的溶液共混方法将聚乙二醇 (PEG) 改性的 β-环糊精 (CD) 添加到自修复水性聚氨酯 (SHWPU) 中。研究了 SHWPU/CD 纳米复合材料的形貌、化学结构、乳液稳定性、热行为、机械和自修复性能。结果表明，CDs在SHWPU基体中分散良好，混合乳液稳定。通过添加 CD，SHWPU 的热稳定性得到改善。当CD的质量分数低于5%时，纳米复合材料的力学和自修复性能明显提高，表明CD改性的SHWPU在耐用涂料和胶粘剂领域具有潜在的应用前景，