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. 2020 Dec 16;6(51):eabe0026. doi: 10.1126/sciadv.abe0026

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Copyright © 2020 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).

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Fig. 3 — (A) Reaction scheme, structures of (co)monomers, and conversions. General (co)polymerization reaction, reaction conditions: butenolides-comonomers (1:1 ratio), Trigonox 42S (6 mol %), 2.15 M in 1-methoxy-2-propanol, reflux, 50 min to 4 hours. (B) Substrate conversion of alkoxybutenolides, homopolymerization (column 1), and copolymerization (columns 2 to 4); butenolides-comonomers (1:1 ratio), in the case of di(ethylene glycol) divinyl ether 1:0.5 ratio. (A) Maximum conversion obtained for copolymerization of B2, DVE and B4, DVE due to formation of insoluble material. For a complete overview of copolymerization reactions, see table S38.