Fig. 3: Polymerization kinetics study of CAP.
From: Cationic-anionic synchronous ring-opening polymerization
A Kinetic plots for the CAP of MOZ and CL using BiCl3 as an initiator in DMAc ([BiCl3]0: [MOZ]0: [CL]0 = 1: 50: 50); (▲) MOZ; (●) CL; [BiCl3]0 = 0.0392 mol/L, [MOZ]0 = [CL]0 = 1.96 mol/L (corresponding to Table 1). The polymerization rate constant (kp) was obtained from this figure by the following equation: ln([MOZ]0/[MOZ]t) = kpt, where M represents MOZ or CL, t represents reaction time. The polymerization rate constant of MOZ (kp, MOZ) was 1.03 × 10−4 s−1; the polymerization rate constant of CL (kp, CL) after 3 h was calculated to be 3.19 × 10−6 s−1. B Dependence of molecular weights (Mn) and molecular weight distributions (Ɖ) on the conversion of MOZ during the CAP (corresponding to Table 1). The linear increasing number-average molecular weights (Mn,SEC) versus MOZ conversions (Conv.MOZ) confirm a living cationic ring-opening polymerization (CROP) of MOZ. C Turnover frequency (TOF) of CL versus the molar ratio of MOZ/BiCl3 (corresponding to Table 2); All polymerizations feature the same CL/BiCl3 molar ratio of 50/1, but with different MOZ/BiCl3 molar ratios. The TOF values and CL conversion increased monotonically with the MOZ/BiCl3 molar ratio.
