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dc.contributor.authorJia, Mingchen
dc.contributor.authorZhang, Dongyue
dc.contributor.authorde Kort, Gijs W.
dc.contributor.authorWilsens, Carolus H. R. M.
dc.contributor.authorRastogi, Sanjay
dc.contributor.authorHadjichristidis, Nikos
dc.contributor.authorGnanou, Yves
dc.contributor.authorFeng, Xiaoshuang
dc.date.accessioned2020-07-01T07:01:29Z
dc.date.available2020-07-01T07:01:29Z
dc.date.issued2020-06-29
dc.date.submitted2020-05-05
dc.identifier.citationJia, M., Zhang, D., de Kort, G. W., Wilsens, C. H. R. M., Rastogi, S., Hadjichristidis, N., … Feng, X. (2020). All-Polycarbonate Thermoplastic Elastomers Based on Triblock Copolymers Derived from Triethylborane-Mediated Sequential Copolymerization of CO2 with Various Epoxides. Macromolecules. doi:10.1021/acs.macromol.0c01068
dc.identifier.issn0024-9297
dc.identifier.issn1520-5835
dc.identifier.doi10.1021/acs.macromol.0c01068
dc.identifier.urihttp://hdl.handle.net/10754/663955
dc.description.abstractVarious oxirane monomers including alkyl ether or allyl-substituted ones such as 1-butene oxide, 1-hexene oxide, 1-octene oxide, butyl glycidyl ether, allyl glycidyl ether, and 2-ethylhexyl glycidyl ether were anionically copolymerized with CO2 into polycarbonates using onium salts as initiator in the presence of triethylborane. All copolymerizations exhibited a “living” character, and the monomer consumption was monitored by in situ Fourier-transform infrared spectroscopy. The various polycarbonate samples obtained were characterized by 1H NMR, GPC, and differential scanning calorimetry. In a second step, all-polycarbonate triblock copolymers demonstrating elastomeric behavior were obtained in one pot by sequential copolymerization of CO2 with two different epoxides, using a difunctional initiator. 1-Octene oxide was first copolymerized with CO2 to form the central soft poly(octene carbonate) block which was flanked by two external rigid poly(cyclohexene carbonate) blocks obtained through subsequent copolymerization of cyclohexene oxide with CO2. Upon varying the ratio of 1-octene oxide to cyclohexene oxide and their respective ratios to the initiator, three all-polycarbonate triblock samples were prepared with molar masses of about 350 kg/mol and 22, 26, and 29 mol % hard block content, respectively. The resulting triblock copolymers were analyzed using 1H NMR, GPC, thermogravimetric analysis, differential scanning calorimetry, and atomic force microscopy. All three samples demonstrated typical elastomeric behavior characterized by a high elongation at break and ultimate tensile strength in the same range as those of other natural and synthetic rubbers, in particular those used in applications such as tissue engineering.
dc.description.sponsorshipThis research work is supported by KAUST under baseline funding (BAS/1/1374-01-01).
dc.publisherAmerican Chemical Society (ACS)
dc.relation.urlhttps://pubs.acs.org/doi/10.1021/acs.macromol.0c01068
dc.relation.urlhttps://pubs.acs.org/doi/pdf/10.1021/acs.macromol.0c01068
dc.rightsThis is an open access article published under a Creative Commons Attribution (CC-BY) License, which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited.
dc.rights.urihttp://pubs.acs.org/page/policy/authorchoice_ccby_termsofuse.html
dc.titleAll-Polycarbonate Thermoplastic Elastomers Based on Triblock Copolymers Derived from Triethylborane-Mediated Sequential Copolymerization of CO2 with Various Epoxides
dc.typeArticle
dc.contributor.departmentAcademic Affairs
dc.contributor.departmentChemical Science Program
dc.contributor.departmentKAUST Catalysis Center (KCC)
dc.contributor.departmentOffice of the VP
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.contributor.departmentPolymer Synthesis Laboratory
dc.identifier.journalMacromolecules
dc.identifier.pmcidPMC7467772
dc.eprint.versionPublisher's Version/PDF
dc.contributor.institutionAachen-Maastricht Institute of Biobased Materials (AMIBM), Maastricht University, P.O. Box 616, Maastricht 6200MD, The Netherlands
kaust.personJia, Mingchen
kaust.personZhang, Dongyue
kaust.personHadjichristidis, Nikos
kaust.personGnanou, Yves
kaust.personFeng, Xiaoshuang
kaust.grant.numberBAS/1/1374-01-01
dc.date.accepted2020-06-08
refterms.dateFOA2020-07-01T07:02:04Z
dc.date.published-online2020-06-29
dc.date.published-print2020-07-14


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