1H-NMR spectra are recorded using a Bruker AS 600 high resolution 1H-NMR spectrophotometer. Figure 3 shows the 1H-NMR spectrum of PBAT, dissolved in CDCl3. The ratio between each monomer unit has been determined by 1H-NMR. The integration of the peaks of the adipate unit (BA) and the terephthalate unit (BT), respectively, at 2.33 and 8.09 ppm, gives
PBAT composition: 54.5% of BA and 45.5% of BT.