Figure 3.
SEM photograph of SA/pNIPAAm hydrogel at varied pH values of (A) 1.91, (B) 6.03, (C) 7.40, and (D) 10.96 (constant temperature of 30 °C), and temperatures of (E) 28 °C, (F) 32 °C, (G) 35 °C, and (H) 37 °C (constant pH of 7.40).
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