Huang Chengdi, Zhang Hanwei, Hu Ziqing, Zhang Youping, Ji Xiaofan
School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
Gels. 2022 Jul 28;8(8):475. doi: 10.3390/gels8080475.
Polymer gels have been widely used in the field for tissue engineering, sensing, and drug delivery due to their excellent biocompatibility, hydrophilicity, and degradability. However, common polymer gels are easily deformed on account of their relatively weak mechanical properties, thereby hindering their application fields, as well as shortening their service life. The incorporation of reversible non-covalent bonds is capable of improving the mechanical properties of polymer gels. Thus, here, a poly(methyl methacrylate) polymer network was prepared by introducing host-guest interactions between pillar[5]arene and pyridine cation. Owing to the incorporated host-guest interactions, the modified polymer gels exhibited extraordinary mechanical properties according to the results of the tensile tests. In addition, the influence of the host-guest interaction on the mechanical properties of the gels was also proved by rheological experiments and swelling experiments.
聚合物凝胶因其优异的生物相容性、亲水性和可降解性，已在组织工程、传感和药物递送领域得到广泛应用。然而，普通聚合物凝胶由于其相对较弱的机械性能而容易变形，从而阻碍了它们的应用领域，同时缩短了它们的使用寿命。引入可逆的非共价键能够改善聚合物凝胶的机械性能。因此，在此通过引入柱[5]芳烃与吡啶阳离子之间的主客体相互作用制备了聚甲基丙烯酸甲酯聚合物网络。由于引入了主客体相互作用，根据拉伸试验结果，改性聚合物凝胶表现出非凡的机械性能。此外，流变学实验和溶胀实验也证明了主客体相互作用对凝胶机械性能的影响。
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