A Novel Recyclable Anti‐Fatigue Hydrogel: Polyvinyl Alcohol/Glycerol/Bamboo Microfibril Double‐Network Hydrogel

Double‐Network (DN) hydrogels have been widely used to enhance mechanical properties. However, existing DN hydrogels are not reusable, limiting their potential applications. To address this issue, a polyvinyl alcohol/glycerol/bamboo microfibril double‐network tough hydrogel is designed and prepared using a simple method. The bamboo microfibril and polyvinyl alcohol form a tight and rigid network through hydrogen bonding, improving mechanical properties. The prepared polyvinyl alcohol/glycerol/bamboo microfibril double network tough hydrogel has the advantages of reusability and fatigue resistance. Furthermore, both the elastic modulus and toughness of the hydrogel increase with increasing bamboo microfibril content. This study demonstrates that the hydrogel can be recast after cyclic compression, maintaining its recyclability, stability, and certain stiffness and toughness. Additionally, the study highlights the potential of hydrogels for controllable mechanical properties, fatigue resistance, and shows that polyvinyl alcohol/glycerol/bamboo microfibril hydrogel has broad value for plasticity and reuse.