Effect of Sodium Salicylate on the Viscoelastic Properties and Stability of Polyacrylate-Based Hydrogels for Medical Applications

Table 5

Changes of pH, viscosity, and NaSal concentration of the hydrogels after 1 year of storage at 8 and 25°C.

	G1	G2	G3	G4	G5	G6
(%)	−27	−34	−35	−36	−45	−46
(%)	−17	−18	−20	−24	−31	−38
(%)	−97	−36	−45	−56	−65	−75
(%)	−70	−21	−28	−43	−58	−64
(%)	−54	−55	−52	−54	−54	−55
(%)	−39	−38	−39	−39	−39	−38