Acidic and alkaline gas sensitive and self-healing chitosan aerogel based on electrostatic interaction

Fluorescent double network ionogels with fast self-healability and high resilience for reliable human motion detection

“…[20][21][22] Recently, self-healing ionogels, which can repair damage and maintain long-lasting functions, have attracted a great deal of interest. Most self-healing ionogels achieve their healability through non-covalent bonds including ion-dipole interactions, electrostatic interactions, hydrogen bonds and metal coordination interactions, [23][24][25][26] or dynamically reversible covalent bonds such as disulfide bonds, urea bonds and imine bonds, [27][28][29] and therefore, they can heal the damage to renew the physical or chemical cross-linking. For example, a supramolecular ionogel with excellent self-repairing capability has been prepared for the successful purification of wastewater containing cationic dyes by D'Anna et al 30 The extended service life and integrity of function are critically required by flexible strain sensors, attributed to the successful crack repair during fatigue loads.…”

Nanoarchitectonics composite hydrogels with high toughness, mechanical strength, and self-healing capability for electrical actuators with programmable shape memory properties

“…S2b †), there is a peak at 401.8 eV, which is attributed to the electrostatic interaction between the protonated amine group and the deprotonated carboxyl group. 33…”

Recent advances in self‐healing materials for food packaging

“…Reversible electrostatic interactions can be initiated between the charged polymers and ions, 52 polyelectrolytes, 64 polyampholytes, 65 and zwitterionic fusions, 66 resulting in the formation of self-healing films, 31 hydrogels, 12 and aerogels. 67 For instance, a polyelectrolyte multilayer (PEM) film with self-healing ability was constructed from polydopamine and SA by layer-by-layer (LBL) assembly. 68 Zhao et al 67 manufactured an aerogel based on the electrostatic interactions between -NH 3+ of chitosan and -COO À of itaconic acid.…”

“…For instance, a polyelectrolyte multilayer (PEM) film with self‐healing ability was constructed from polydopamine and SA by layer‐by‐layer (LBL) assembly 68 . Zhao et al 67 manufactured an aerogel based on the electrostatic interactions between ‐NH 3+ of chitosan and –COO − of itaconic acid. A similar composite aerogel of chitosan and itaconic acid was constructed by the freeze‐drying process, where the structure and mechanical properties of the cut aerogel could recover within 30 s at room temperature via wetting treatment 69 .…”