Polyacryloyl hydrazide incorporation into ionic hydrogels improves toughness, elasticity, self-healability, adhesive & strain sensing properties

Abstract

Polyacryloyl hydrazide incorporation improves the toughness of ionic hydrogels & imparts self-healability and adhesive properties.

Reversibly highly stretchable and self‐healable zwitterion‐containing polyelectrolyte hydrogel with high ionic conductivity for high‐performance flexible and cold‐resistant supercapacitor

“…The increased size of microdomain originates from the ionic complexation of PSBMA and AMPS monomer. [30] Moreover, as shown in Figure S3a and b, compared to the pore structure of the PAM gel, P(AM-SBMA-AMPS)-SiO 2 gel shows the smaller pore size, suggesting the formation of more packed structures, which indicates the increased crosslinking degree by the additional high-density dynamic ionic interaction by the introduction of SBMA and AMPS.…”

“…Among the supramolecular interactions to toughen hydrogels, dynamic ionic interaction between oppositely charged groups that can be established by polymerizing oppositely charged monomers, have the advantages of not only making hydrogel tough, recoverable or self‐healable but also endowing hydrogel with excellent conductivity derived from the functional polyelectrolyte . Inspired by these works and the unique attributes of zwitterionic materials, it was anticipated to develop zwitterion‐containing polyelectrolyte hydrogels with simultaneously improved mechanical properties and ionic conductivity via copolymerization of zwitterionic monomer with polymerizable electrolyte possessing anionic or cationic functionalities through the formation of additional ionic interaction . 2‐Acrylamide‐2‐methyl propanesulfonic acid (AMPS) with ionic molecular structure is an excellent monomer candidate, which is highly water‐soluble and highly ionic conductive .…”

“…[20,22,23,28,29] Inspired by these works and the unique attributes of zwitterionic materials, it was anticipated to develop zwitterion-containing polyelectrolyte hydrogels with simultaneously improved mechanical properties and ionic conductivity via copolymerization of zwitterionic monomer with polymerizable electrolyte possessing anionic or cationic functionalities through the formation of additional ionic interaction. [21,30] 2-Acrylamide-2-methyl propanesulfonic acid (AMPS) with ionic molecular structure is an excellent monomer candidate, which is highly water-soluble and highly ionic conductive. [31][32][33] Moreover, considering that chemical crosslinking not only largely constrains the mobility of polymer chains and hinders the self-healing abilities of hydrogels but also causes inhomogeneous network, which is unfavorable for ion transportation in hydrogel GPEs.…”

Supplementary Networking of Interpenetrating Polymer System (SNIPSy) Strategy to Develop Strong & High Water Content Ionic Hydrogels for Solid Electrolyte Applications

“…Recently, we have utilized strategies of incorporating polyacryloyl hydrazide (PAHz) microparticles and Ag‐PAHz nanocomposites to improve the strength of the ionic hydrogels. [ 20,21 ] The ultimate tensile stress (σ T ) of the resulting hydrogels increased up to ≈1 MPa and the samples were stretchable above 1000%.…”

Novel nitrogen doped carbon dots enhancing the anticorrosive performance of waterborne epoxy coatings

“…Therefore, the development of facile methods to prepare anti-corrosive coatings which are safe, eco-friendly, non-toxic and self-healing is highly desirable. [8][9][10][11] Water-based epoxy resin, a stable dispersion system in which an epoxy resin is dispersed in the form of small particles or droplets in a continuous phase of water, has many advantages over solvent-borne epoxy coatings. 12,13 First, it exhibits strong adaptability and high adhesion to many metal substrates; second, it meets the demands of environmental protection due to the low content of organic solvents or volatile organic compounds.…”