The introduction of structured microsphere composites into hydrogels is found to improve their mechanical strength capability. Herein, chitosan microspheres were functionalized with poly(acrylamide-co-1-benzyl-3-vinylimidazolium bromide) (CS–P(AM–G)), which was synthesized through an in situ copolymerization of acrylamide and a guest functional monomer. Supramolecular hydrogels were fabricated by dynamic host–guest interactions between guest units and the host molecule cucurbit[8]uril (CB[8]). Investigations on the mechanical properties of the hydrogels show that the tensile stress and the compress stress of the hydrogels are five times higher than those of CB[8] hydrogels without CS, and the healing efficiency of the hydrogels at room temperature is 88% after 24 h. The results show that CS microspheres serve as both polyfunctional initiating and cross-linking centers, whereas the dynamic host–guest interactions endow the hydrogels with a higher self-healing property. The process provides a novel method for the production of tough and self-healing supramolecular hydrogels with various potential applications.

中文翻译：

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主客体相互作用介导的混合微球结构超分子水凝胶的制备，具有很高的机械强度

发现将结构化的微球复合材料引入水凝胶可改善其机械强度性能。在这里，壳聚糖微球是通过原位合成的聚（丙烯酰胺-co -1-苄基-3-乙烯基咪唑鎓溴化物）（CS–P（AM–G））功能化的丙烯酰胺和客体功能单体的共聚。超分子水凝胶是通过客体单元与宿主分子葫芦[8] uril（CB [8]）之间的动态主客相互作用而制备的。对水凝胶力学性能的研究表明，该水凝胶的拉伸应力和压缩应力是不使用CS的CB [8]水凝胶的拉伸应力和压缩应力的五倍，室温下水凝胶在24天后的愈合效率为88％。 H。结果表明，CS微球既是多功能的引发中心，又是交联的中心，而动态的主客体相互作用赋予水凝胶更高的自愈性能。该方法提供了生产具有各种潜在应用的坚韧和自修复的超分子水凝胶的新颖方法。