The primary limitation of 3D bioprinting remains in ink printability, which often necessitates the use of rheology modifiers or adjustments to the printing environment. Here, we introduce a novel method for preparing high-viscosity chitosan/acrylamide (CS/PAM) ink using an aluminum chloride (AlCl·6HO) solution as the solvent. The resulting hydrogel exhibits a compressive strength of 4.
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