Fig. 8. (A) Reaction scheme of HEAA-PCL extension with lactide using DBU. (B) 1H-NMR spectra of time zero and after 30 minutes, zoomed to 5.05–5.25 ppm – full spectra in ESI Fig. 18.† Peak marked with * is a DCM satellite. (C) GPC traces of HEAA-PCL (GPC Mn 9.45 kDa, Đ 1.2, 1H-NMR 4.5 kDa) and HEAA-PCL-PLA (GPC Mn 19.4 kDa, Đ 1.2, 1H-NMR 43 kDa) demonstrating a single polymer peak in both chromatograms.
