Nanocomposite conductive hydrogels with Robust elasticity and multifunctional responsiveness for flexible sensing and wound monitoring

Abstract

Flexible biosensors made from conductive hydrogels have shown tremendous potential in health management and human-machine interfaces. Nevertheless, it remains challenging to fabricate conductive hydrogels with robust resilience and long-term stability....

Fabrication of a tough, long-lasting adhesive hydrogel patch via the synergy of interfacial entanglement and adhesion group densification

“…5E). 9,18,20,32,37,38,[40][41][42][43][44][45][46][47][48] In order to reveal the mechanism of SCNCPA toward improving the adhesion performance of composite hydrogels, we systematically compared the adhesion properties of PAAH, PACH, PACPH, and PACP X H with different SCNCPA contents using the glass substrate as reference. First, as seen in Fig.…”

“…5 Nanocomposite construction is an effective strategy to toughen hydrogels, and a considerable number of studies have demonstrated that the nanomaterials in composite hydrogels can effectively dissipate energy. 6,7 For example, inorganic nanomaterials, such as MXenes, 8 carbon nanotubes (CNTs) 9 and graphene (GO), 10 have been used to prepare nanocomposite hydrogels by simple mixing. Shen et al reported nanocomposite hydrogels prepared by the one-pot radical polymerization of 3-acrylamidophenylboronic acid and acrylamide in the presence of stably dispersed CNTs.…”

“…Shen et al reported nanocomposite hydrogels prepared by the one-pot radical polymerization of 3-acrylamidophenylboronic acid and acrylamide in the presence of stably dispersed CNTs. 9 The rigid CNTs could dissipate some of the energy during deformation, enhancing the mechanical properties of the composite hydrogel (the tensile strength, modulus and fracture energy values reaching 323 kPa, 50 kPa and 1078 J m −2 , respectively). However, nanomaterials, such as CNTs, GO and MXenes, are limited by their own structure; their low surface charge density results in poor dispersion in the hydrogel, and hence they need to be dispersed with assistance.…”

“…Under the same conditions, the composite hydrogel PACPH prepared from SCNCPA exhibited higher strength and larger deformation (Fig. 4B), 9,11,12,[18][19][20][21][32][33][34][35][36][37][38][39][40] which are favorable to the application of hydrogels in environments requiring high strength. Finally, based on the above analysis and the surface structure of SCNCPA, its mechanism towards the enhancement and toughening of the hydrogel is shown in Fig.…”

Ring-opening copolymerization of hydroxyproline-derived thiolactones and lipoic acid derivatives

“…[1][2][3] Under the conditions of light, electricity, heat, pH, metal-ionic catalysis, etc., dynamic polymers can realize rapid covalent bond exchange, so as to form bulk materials or gels with unique physical and chemical properties such as self-healing [4][5][6][7][8][9][10] and stimuliresponsiveness. [10][11][12][13][14][15][16][17][18][19] As the social and environmental crises caused by nondegradability of traditional polymers intensify, dynamic polymers have emerged as an important approach towards sustainability, material recovery and recycling, and functional intelligent materials.…”