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Frequency dependencies of storage G′ (filled symbols) and loss G″ (open symbols) moduli for 2.7 wt% solutions and gels of sodium alginate at different concentrations of cross-linker calcium chloride without HNTs ((a) 3.1 mM (black triangles), (b) 6.2 mM (cyan squares), and 12.5 mM (violet hexagons)), and with 5.4 vol.% HNTs ((a) 3.1 mM (red circles), (b) 6.2 mM (purple triangles), and 12.5 mM (orange diamonds)).
