An ultrasound-induced MXene doped PAM–SA super-tough hydrogel

Abstract

Here we reported a novel ultrasound-induced polymerization to achieve a polyacrylamide–sodium alginate (SA) dual network hydrogel via a redox reaction with MXene (Ti3C2) as a reductant and potassium persulfate (KPS) as an oxidant.

Cold-resistant, highly stretchable ionic conductive hydrogels for intelligent motion recognition in winter sports

“…2d, the PC 1 PAV 0 hydrogel displayed three characteristic peaks at 284.8, 286.2 and 287.9 eV in the C 1s spectrum, corresponding to C-C/C-H, C-N/C-O and O-CQO, respectively. 62,63 The characteristic C 1s peaks of PC 1 PAV 20 hydrogels were at 284.8, 286.3 and 287.8 eV for the C-C/C-H, C-N/C-O and O-CQO, respectively (Fig. 2e).…”

Synthesis of a PNIPAM-Based Composite Hydrogel and Its Multipurpose Applications in Piezoresistive and Temperature Sensing

“…The tensile stress− strain (σ−ε) curves of PCP@M hydrogels with different contents of MXene are shown in Figure 4a, demonstrating that the mechanical strength of PCP@M hydrogels initially increases and then decreases with MXene content because excess MXene would cause agglomeration, preventing the direct cross-linking between the polymer chains and leading to a decrease in mechanical properties. 49 It is noteworthy that the hydrogels demonstrated an elastic response with high tensile strength and excellent elongation at break when the MXene content was 0.15%, reaching maximum values of 117 kPa and 1729%, respectively (Figure 4b). The conductivity of the hydrogel reached a high value of 0.13 S/m (Figure S6).…”

Triple-Responsive, Multimodal, Visual Electronic Skin toward All-in-One Health Management for Gestational Diabetes Mellitus

“…67 Compared with the latter (Figure 6g), the TCPs@PB-MC hydrogel electrode (Figure 6h) was found with high flexibility, which could effectively avoid discomfort to human skin, successfully realize ECG monitoring, and accurately display the P, QRS, and T-wave with a regular waveform (Figure 6i). 68 In addition, the temperature fluctuation of human skin was simulated, and an infrared thermal imager was used to detect the temperature change in real time. In Figure 6j, the color change of the hydrogel was obviously seen from green to white at normal human body temperature or the fever state.…”