Fig. 2: Preparation and characterization of the OSPPB hydrogel. | Nature Communications

Fig. 2: Preparation and characterization of the OSPPB hydrogel.

From: Neurovascularization inhibiting dual responsive hydrogel for alleviating the progression of osteoarthritis

Fig. 2

a The facile fabrication route of the OSPPB hydrogel. b The gelation, injectability, and self-healing property of the OSPPB hydrogel. c ATR-FTIR of PPCA, OSAP, OSPP, and OSPPB, showing the Schiff base bonds and boronic ester bonds leading to gelation. d SEM of OSPP and OSPPB, showing the uniformly distributed BGN@Be on the surface of OSPPB hydrogel. The red circle represents the BGN. Scale bars = 200 μm (left) and 5 μm (right). e SEM-EDS of OSPPB hydrogel (areas with BGN distribution), showing the Ca, P and Si elements on OSPPB hydrogel. f Frequency-sweep, Time-sweep sequence, and g Shear-thinning test of the OSPP and OSPPB hydrogels. G’ means storage modulus and G” means loss modulus.

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