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. 2020 Jul 19;12(7):1604. doi: 10.3390/polym12071604

Figure 4.

Figure 4

Solubility with respect to time in (A) dimethylacetamide (DMAc) (80 °C) and (B) phosphoric acid (PA) (160 °C). The inset images were captured after testing for 24 h.