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Fourier Transform Infra Red spectra. FT-IR spectra of commercially bought monomers (A) δ-Valerolactone (VL) (B) Poly(ethylene glycol) (PEG) and the synthesized copolymer VEV (C) Poly(δ-valerolactone)/Poly(ethylene glycol)/Poly(δ-valerolactone) (VEV) copolymer were recorded using potassium bromide pellets.
