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The Fourier-transform infrared (FTIR) spectra (A), thermogravimetric analysis (TGA) (B), differential thermal analysis (DTA) (C), and differential scanning calorimetry (DSC) thermograms (D) of amine-terminated poly(N-isopropylacrylamide) (PNIPAM-NH2, hyaluronic acid (HA), and hyaluronic acid-g-poly(N-isopropylacrylamide (HPN)).
