Mechanical Robust and Self‐Healable Supramolecular Hydrogel

Abstract

Development of self-healing polymers with spontaneous self-healing capability and good mechanical performance is highly desired and remains a great challenge. Here, mechanical robust and self-healable supramolecular hydrogels have been fabricated by using poly(2-dimethylaminoethyl methacrylate) brushes modified silica nanoparticles (SiO2 @PDMAEMA) as multifunctional macrocrosslinkers in a poly(acrylic acid) (PAA) network structure. The SiO2 nanoparticles serve as noncovalent crosslinkers, dissipating energy, whereas the electrostatic interactions between cationic PDMAEMA and anionic PAA render the hydrogel self-healing property. This process provides a simple and broadly applicable strategy to produce mechanical strong and self-healable materials.

Controlled Thermoreversible Formation of Supramolecular Hydrogels Based on Poly(vinyl alcohol) and Natural Phenolic Compounds

“…Supramolecular materials based on noncovalent bonds have attracted considerable attention in several fields due to their special characteristics such as self‐healing, shape memory, and stimuli‐responsive properties among others . Indeed, multiple hydrogen bonding are ideal reversible noncovalent interactions for preparing supramolecular networks combining high strength and excellent reversibility …”

One‐Pot Fabrication of a Novel Agar‐Polyacrylamide/Graphene Oxide Nanocomposite Double Network Hydrogel with High Mechanical Properties

“…Self‐healing property is important for the practical application of hydrogel, so we further examined the self‐healing ability of Agar‐PAM/GO DN gel. The divided gels were put together with the cut surfaces contacting with each other and incubated at 80 °C for 3 h. The healed gel was tough and strong to stand high‐level deformation, for example, stretching (Figure a(ii1–2)) and winding (Figure a(iii)).…”

Semi‐IPNs with Moisture‐Triggered Shape Memory and Self‐Healing Properties

“…Encouraging progress in the field of SHMs has been achieved. New design strategies and various self‐healing species have been explored . However, in many practical applications, fracture surfaces cannot autonomously come together into needed closure for healing close proximity.…”