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Title: Tunable and recyclable polyesters from CO2 and butadiene
Carbon dioxide is inexpensive and abundant, and its prevalence as waste makes it attractive as a sustainable chemical feedstock. Although there are examples of copolymerizations of CO2 with high-energy monomers, the direct copolymerization of CO2 with olefins has not been reported. Herein, an alternate route to functionalizable, recyclable polyesters derived from CO2, butadiene and hydrogen via an intermediary lactone, 3-ethyl-6-vinyltetrahydro-2H-pyran-2-one, is described. Catalytic ring-opening polymerization of the lactone by 1,5,7-triazabicyclo[4.4.0]dec-5-ene yields polyesters with molar masses up to 13.6 kg/mol and pendent vinyl sidechains that can undergo post-polymerization functionalization. The polymer has a low ceiling temperature of 138 ºC, allowing for facile chemical recycling, and is inherently biodegradable under aerobic aqueous conditions (OECD-301B protocol). These results mark the first example of a well-defined polyester derived from CO2, olefins and hydrogen, expanding access to new polymer feedstocks that were once considered unfeasible.  more » « less
Award ID(s):
1901635
PAR ID:
10339893
Author(s) / Creator(s):
; ; ;
Date Published:
Journal Name:
Nature Chemistry
ISSN:
1755-4330
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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