BibTex format
@article{Sulley:2020:10.1021/jacs.9b13106,
author = {Sulley, GS and Gregory, GL and Chen, TTD and Carrodeguas, LP and Trott, G and Santmarti, A and Lee, K-Y and Terrill, NJ and Williams, CK},
doi = {10.1021/jacs.9b13106},
journal = {Journal of the American Chemical Society},
pages = {4367--4378},
title = {Switchable catalysis improves the properties of CO2-derived polymers: poly(cyclohexene carbonate-b-epsilon-decalactone-b-cyclohexene carbonate) adhesives, elastomers, and toughened plastics},
url = {http://dx.doi.org/10.1021/jacs.9b13106},
volume = {142},
year = {2020}
}
RIS format (EndNote, RefMan)
TY - JOUR
AB - Carbon dioxide/epoxide copolymerization is an efficient way to add value to waste CO2 and to reduce pollution in polymer manufacturing. Using this process to make low molar mass polycarbonate polyols is a commercially relevant route to new thermosets and polyurethanes. In contrast, high molar mass polycarbonates, produced from CO2, generally under-deliver in terms of properties, and one of the most widely investigated, poly(cyclohexene carbonate), is limited by its low elongation at break and high brittleness. Here, a new catalytic polymerization process is reported that selectively and efficiently yields degradable ABA-block polymers, incorporating 6–23 wt % CO2. The polymers are synthesized using a new, highly active organometallic heterodinuclear Zn(II)/Mg(II) catalyst applied in a one-pot procedure together with biobased ε-decalactone, cyclohexene oxide, and carbon dioxide to make a series of poly(cyclohexene carbonate-b-decalactone-b-cyclohexene carbonate) [PCHC-PDL-PCHC]. The process is highly selective (CO2 selectivity >99% of theoretical value), allows for high monomer conversions (>90%), and yields polymers with predictable compositions, molar mass (from 38–71 kg mol–1), and forms dihydroxyl telechelic chains. These new materials improve upon the properties of poly(cyclohexene carbonate) and, specifically, they show good thermal stability (Td,5 ∼ 280 °C), high toughness (112 MJ m–3), and very high elongation at break (>900%). Materials properties are improved by precisely controlling both the quantity and location of carbon dioxide in the polymer chain. Preliminary studies show that polymers are stable in aqueous environments at room temperature over months, but they are rapidly degraded upon gentle heating in an acidic environment (60 °C, toluene, p-toluene sulfonic acid). The process is likely generally applicable to many other lactones, lactides, anhydrides, epoxides, and heterocumulenes and sets the s
AU - Sulley,GS
AU - Gregory,GL
AU - Chen,TTD
AU - Carrodeguas,LP
AU - Trott,G
AU - Santmarti,A
AU - Lee,K-Y
AU - Terrill,NJ
AU - Williams,CK
DO - 10.1021/jacs.9b13106
EP - 4378
PY - 2020///
SN - 0002-7863
SP - 4367
TI - Switchable catalysis improves the properties of CO2-derived polymers: poly(cyclohexene carbonate-b-epsilon-decalactone-b-cyclohexene carbonate) adhesives, elastomers, and toughened plastics
T2 - Journal of the American Chemical Society
UR - http://dx.doi.org/10.1021/jacs.9b13106
UR - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000518700800034&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR - https://pubs.acs.org/doi/abs/10.1021/jacs.9b13106
UR - http://hdl.handle.net/10044/1/79009
VL - 142
ER -
