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The FTIR spectra of liquid HPL (in red) and HPL aerogels (in black), highlighting the characteristic peaks of amides I, II, III, and A. The comparison between the FTIR spectra of liquid HPL and HPL aerogels allows for the assessment of any structural changes or preservation of molecular characteristics induced by the aerogel formation process. The results provide valuable insights into the chemical composition and structural integrity of HPL aerogels.
