Fig. 2 | Polymer Journal

Fig. 2

From: Cationic ring-opening copolymerization of a cyclic acetal and γ-butyrolactone: monomer sequence transformation and polymerization–depolymerization control by vacuuming or temperature changes

Fig. 2

1H NMR spectra of (A) the MDOP–γBL copolymer (entry 3 in Table 1) and (B) the γBL homopolymer ([γBL]0 = 9.5 M, [benzyl alcohol]0 = 19 mM, [TBD]0 = 9.5 mM, in dichloromethane at −40 °C; conv = 35% (24 h), Mn(GPC) = 1.6 × 103; the spectrum of the high-MW portion separated by preparative GPC). See Scheme S1 for other possible structures

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