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

<table>Direct observation of synthesis of the P(ECA-IA-MEG) hydrogel. (a) Mixture solution of PECA, IA, MPEGMA, BIS, and APS. (b) Obtained hydrogel after being heated at 37°C for 4 hrs.</table>

BioMed Research International

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Figure 2: Synthesis, Characterization, and Acute Oral Toxicity Evaluation of pH-Sensitive Hydrogel Based on MPEG, Poly(<i>ε</i>-caprolactone), and Itaconic Acid 

Figure 2 | Synthesis, Characterization, and Acute Oral Toxicity Evaluation of pH-Sensitive Hydrogel Based on MPEG, Poly(ε-caprolactone), and Itaconic Acid 