Fig. 3: Preparation, characterization, and rheological properties of PVA-EBPD hydrogel. | Nature Communications

Fig. 3: Preparation, characterization, and rheological properties of PVA-EBPD hydrogel.

From: Instantaneous self-recovery and ultra-low detection limit hydrogel electronic sensor for temporomandibular disorders intelligent diagnosis

Fig. 3

a Schematic diagram of the preparation process of PVA-EBPD hydrogel. b Schematic diagram of the reaction process of PVA-EBPD hydrogel. c 11B NMR spectra of PVA-EBPD hydrogel, PVA hydrogel, EBPD solution, and NaB(OH)4 solution in D2O. d FT-IR spectra of lyophilized PVA-EBPD hydrogel, PVA hydrogel, EBPD solution, PVA solution, and NaB(OH)4 solution. e SEM image of lyophilized PVA-EBPD hydrogel, PVA hydrogel, and PVA solution (2 samples per group). f Formability of PVA-EBPD hydrogel. g Strain sweep test of PVA-EBPD hydrogel and PVA hydrogel at a constant angular frequency rate of 10 rad/s. h Frequency sweep of PVA-EBPD hydrogel and PVA hydrogel at a constant strain of 1%. i Schematic diagram of the self-recovery property of PVA-EBPD hydrogel. j, k Self-recovery properties of PVA-EBPD hydrogel (j) and PVA hydrogel (k) by dynamic step-strain sweep experiments at a constant angular frequency of 10 rad s−1 in the oscillating mode of the rheometer. l Viscosity and recovery time of PVA-EBPD hydrogel in the rotational mode of the rheometer. m Cyclic stability testing of PVA-EBPD hydrogel at the shear rate of 11/s. Source data are provided as a Source Data file.

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