self-recovery hydrogels are still susceptible to fatigue fracture. We study a hydrogel containing both covalently cross-linked polyacrylamide and un-cross-linked poly(vinyl alcohol). For a sample without precut crack, the stress–stretch curve recovers after thousands of loading cycles. For a ...
Delayed fractureFatigue fracturePolyacrylamideRapid advances are taking place to develop hydrogels of high stretchability and toughness, but fatigue fracture has not been studied for any hydrogels. This negligence hinders the development of hydrogels and their applications. Here we initiate a study of ...
Fatigue Fracture of Self-Recovery Hydrogels Highly-crosslinked epoxy resins are used as matrix material for high-performance composites, typically developed for weight-reduction purposes in structural aerospace applications. If the clever assembling of different materials into lar... R Bai,J Yang,XP Mor...
fibres, the resulting hydrogels showed an unusual combination of high mechanical strength (fracture stress ~4.1 MPa), ultrahigh toughness (fracture energy ~25.3 kJ m−2), excellent fatigue resistance (fatigue threshold ~424 J m−2) and almost 100% mechanical recovery in one ...
we report that bonding ordered nanocrystalline domains of synthetic hydrogels on engineering materials can give a fatigue-resistant adhesion with an interfacial fatigue threshold of 800 J m−2, because the fatigue-crack propagation at the interface requires a higher energy to fracture the ordered...
A Self-Healing Cellulose Nanocrystal-Poly(ethylene glycol) Nanocomposite Hydrogel via Diels-Alder Click Reaction Cyclic loading−unloading tests showed the excellent self-recovery and anti-fatigue properties of the hybrid hydrogels. Self-healing capability of hybrid ... C Shao,M Wang,H Chang,... ...
Aspects of the disclosure further relate to block copolymer hydrogels that exhibit both fatigue resistance and fracture resistance with superior rates of recovery. 机译:本公开涉及三嵌段和五嵌段和五嵌段共聚物及其制备方法。 本公开的各方面还涉及嵌段共聚物水凝胶,其表现出疲劳性抗性和抗骨折性的抗损伤率...
fracture a single layer of polymer chains. To accomplish this, they controlled the introduction of crystallinity in to hydrogels to substantially enhance their anti-fatigue-fracture properties. In this work, Lin et al. disclosed the fatigue threshold of polyvinyl alcohol (PVA) with a crystallinity ...
Owing to their excellent biocompatibility and capability of large deformation, hydrogels have attracted extensive attention for promising applications. Whe
Physical hydrogels, composed of non-covalently crosslinking three dimensional polymer networks and a large amount of water, have drawn much attention due to their excellent mechanical properties such as high toughness, self-healing, self-recovery, and shape-memory. But the fatigue behaviors of ...