Synthesis, Characterization, and Acute Oral Toxicity Evaluation of pH-Sensitive Hydrogel Based on MPEG, Poly(<i>ε</i>-caprolactone), and Itaconic Acid

<table><sup>1</sup>H NMR spectrum of PECA macromonomer (in CDCl<sub>3</sub>).</table>

BioMed Research International

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Figure 3

Figure 3: Synthesis, Characterization, and Acute Oral Toxicity Evaluation of pH-Sensitive Hydrogel Based on MPEG, Poly(<i>ε</i>-caprolactone), and Itaconic Acid 

Figure 3 | Synthesis, Characterization, and Acute Oral Toxicity Evaluation of pH-Sensitive Hydrogel Based on MPEG, Poly(ε-caprolactone), and Itaconic Acid 