Dataset for: Unraveling the Effect of Non-Specific Counterions in the Ca²⁺-Induced Gelation of High-Content Alternating Sequence Alginate

This dataset contains the raw and processed data supporting the manuscript "Unraveling the Effect of Non-Specific Counterions in the Ca²⁺-Induced Gelation of High-Content Alternating Sequence Alginate". It includes: (1) raw rheological time-sweep and frequency-sweep curves for ALG-Li, ALG-Na, and ALG-K at different Ca/G ratios and added-salt concentrations; (2) strain-sweep data used to determine the linear viscoelastic region; (3) cryo-SEM micrographs; (4) AFM height images and contour traces used for persistence-length fitting; (5) CD spectra of alginate solutions and Ca²⁺-induced gels; (6) NMR spectra, GPC-MALLS chromatograms, and ICP-OES calibration and replicate data; and (7) LAMMPS input files and MD trajectory data for the poly-GM systems with Li⁺, Na⁺, and K⁺ counterions. The dataset is organized into folders corresponding to each characterization technique. Detailed descriptions of the experimental and computational methods are provided in the manuscript and its Supporting Information.