Reinhards-Hervás, C.Cano, A.J.Rico, A.Salazar, A.Rodríguez, J.2024-04-112024-04-112024C. Reinhards-Hervás, A.J. Cano, A. Rico, A. Salazar, J. Rodríguez, Fracture resistance of polyacrylamide-alginate hydrogels, Engineering Fracture Mechanics, Volume 295, 2024, 109812, ISSN 0013-7944, https://doi.org/10.1016/j.engfracmech.2023.1098120013-7944https://hdl.handle.net/10115/32226Authors are indebted to Agencia Estatal de Investigación of Spain for their financial support through projects PID2019-108968RB-I00 and PID2022-140868OB-I00. Thanks are also extended to the Comunidad de Madrid through project HYDROSIZE M2740.Polyacrylamide-alginate hydrogels are biphasic materials with double-polymeric structure and considerable percentage of water inside. They exhibit complex mechanical behaviour in which finite deformations, non-linearity and time dependence are mixed. Fracture behaviour is less known, and this work analyses the fracture resistance obtained via methodologies of non-linear elastic materials such as that developed by Rivlin and Thomas and that attained with Non-Linear Fracture Mechanics procedures based on the use of J-integral. Special attention is paid to the fracture parameters on both crack growth initiation and crack propagation stages. The validity of the methodologies was evaluated, and conclusions were drawn about the effect of the alginate content on the fracture resistance of polyacrylamide.engAttribution-NonCommercial-NoDerivatives 4.0 Internacionalhttp://creativecommons.org/licenses/by-nc-nd/4.0/FracturePolyacrylamide-alginate hydrogelinfo:eu-repo/semantics/article10.1016/j.engfracmech.2023.109812info:eu-repo/semantics/openAccess