The lack of mechanical strength and toughness of hydrogels usually limits their application in biomedical and industrial fields. Herein, we prepared a composite hydrogel in which supramolecular bonding of an inclusion complex, between β-cyclodextrin (β-CD) as a host molecule and adamantane (Ad) as a guest molecule, was introduced into cellulose fiber/polymer matrix interface to improve the mechanical strength and toughness. Ad was chemically immobilized on the surface of the cellulose fiber. The composite gels were prepared via copolymerization of β-CD acrylamide monomer and N,N-dimethylacrylamide in the presence of Ad-modified cellulose fiber. Ad-modified cellulose acted as both the reinforcing material and the supramolecular cross-linker of the hydrogel. The mechanical strength and toughness of the composite gels were enhanced because of the interfacial host–guest interaction between the fiber and the matrix.

水凝胶缺乏机械强度和韧性通常限制了它们在生物医学和工业领域中的应用。在这里，我们制备了一种复合水凝胶，其中将作为主体分子的β-环糊精（β-CD）和作为客体分子的金刚烷（Ad）之间的包合物的超分子键合引入到纤维素纤维/聚合物基质界面中，以改善机械强度和韧性。将广告化学固定在纤维素纤维的表面上。通过β-CD丙烯酰胺单体与N，N的共聚制备复合凝胶在Ad改性纤维素纤维存在下的-二甲基丙烯酰胺。Ad-修饰的纤维素既充当增强材料，又充当水凝胶的超分子交联剂。复合纤维的机械强度和韧性由于纤维和基质之间的界面主客体相互作用而增强。