Fig. 1.

Storage and loss moduli as a function of temperature for hydrogels with different weight percent of HA and MC. All experiments were performed at 1 Hz using a rotational rheometer (MCR-501 of Anton Paar) equipped with a cone-and-plate geometry. Each composition was tested three times, and the standard deviation was estimated to be < 0.03 Pa or < 1.5%. There is no variation in the ordinate variable since the temperature sweeps are electronically controlled