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Water absorption and swelling behavior of SS/PVA gels. (A) Water contact angle of S50/P50; (B) Time required for SS/PVA gels to achieve swelling equilibrium; (C) Swelling ratio of SS/PVA gels after immersion into PBS buffers (pH 4, 7.4, 10) at 37 °C. n = 3 per group; * p < 0.05, ** p < 0.01, *** p < 0.001. Reproduced with permission [89].
