Enhanced Strength for Double Network Hydrogel Adhesive Through Cohesion‐Adhesion Balance

Abstract Hydrogel adhesives exhibit great potential in various biomedical fields such as tissue sealing and soft robotics. However, the high‐water content and defective network structures of these hydrogel adhesives result in low intrinsic mechanical strength, severely impeding their application. In this study, it is reported that the strong hydrogel adhesive strength can be achieved when a balance is established between adhesive forces and cohesive forces. Based on this principle, a new double network (DN) design is created to combine an adhesive polyvinyl alcohol (PVA) as the first network with a flexible sodium alginate (SA) as the second network. A delicate balance is achieved between cohesion and adhesion…

• IR
  Irish Research eLibrary
• EI
  Enterprise Ireland

  Award: DT20180247
• SF
  Science Foundation Ireland

  Award: 19/FFP/6522
• CS
  China Scholarship Council

  Award: CSC202108300014