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(A) Synthesis scheme of the p (NIPAAm-co-AAc)-g-F68 copolymer. 1H NMR spectra (B) and FT-IR spectra (C) of F68 (a), p (NIPAAm-co-AAc) (b), and p (NIPAAm-co-AAc)-g-F68 (c). (D)Temperature induced absorbance change of hydrogel by UV–Vis spectrophotometry to indicate phase transition (E) Plots of I373/I384 intensity ratio versus the logarithm of p (NIPAAm-co-AAc)-g-F68 copolymer concentration. (F) Rheological properties of the p (NIPAAm-co-AAc)-g-F68 hydrogel.
