Research Article
Synthesis and Properties of pH-, Thermo-, and Salt-Sensitive Modified Poly(aspartic acid)/Poly(vinyl alcohol) IPN Hydrogel and Its Drug Controlled Release
Figure 8
Swelling ratio of KPAsp, KPAsp/PVA semi-IPN, and KPAsp/PVA IPN hydrogels in different salt solutions: NaCl (a), CaCl2 (b), and FeCl3 (c).
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| (b) |
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