High strength hydrogels open new possibilities in the fields of bioengineering and biomedical. In this paper, a highly efficient one-pot strategy was developed to prepare carboxymethyl xylan-g-poly (acrylic acid) (CMX-g-PAA) hydrogels with high compression strength, high elongation and high elasticity by using the metal coordination and the reinforcement of hydroxylate multi-walled carbon nanotubes (HCNTs). Prepared hydrogels were characterized by means of FTIR, XRD, SEM, rheological measurements as well as their swelling and mechanical properties. Results showed that the Fe³⁺-carboxyl coordination and HCNTs imparted hydrogels with high strength and good rapid recovery properties, in which the maximum high compressive strength and elongation at break were achieved to 10.4 MPa and 1032%, and the shape of hydrogels almost returned to the original shape after the external force was removed after 30 cycles of compression. These hydrogels also exhibited Fe³⁺-triggered shape memory properties. Therefore, as-prepared hydrogels possessing high strength, rapid recovery and shape memory properties, could broaden access for application in intelligent toys, electronic skin, biosensing, and tissue engineering.

高强度水凝胶为生物工程和生物医学领域开辟了新的可能性。本文开发了一种高效的一锅法，通过利用金属配位和化学反应制备具有高抗压强度，高伸长率和高弹性的羧甲基木聚糖-g-聚（丙烯酸）（CMX-g-PAA）水凝胶。增强羟基化多壁碳纳米管（HCNT）。通过FTIR，XRD，SEM，流变学测量以及它们的溶胀和机械性能来表征所制备的水凝胶。结果表明，Fe ³⁺-羧基配位和HCNTs赋予水凝胶高强度和良好的快速恢复性能，其中最大的高抗压强度和断裂伸长率分别达到10.4 MPa和1032％，并且水凝胶的形状在外部作用后几乎恢复到原始形状压缩30个循环后，将力移除。这些水凝胶还表现出Fe ³⁺触发的形状记忆特性。因此，所制备的具有高强度，快速恢复和形状记忆特性的水凝胶可拓宽其在智能玩具，电子皮肤，生物传感和组织工程中的应用范围。