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dc.contributor.authorLadelta, Viko
dc.contributor.authorKim, Joey D.
dc.contributor.authorBilalis, Panagiotis
dc.contributor.authorGnanou, Yves
dc.contributor.authorHadjichristidis, Nikos
dc.date.accessioned2018-03-19T08:54:13Z
dc.date.available2018-03-19T08:54:13Z
dc.date.issued2018-03-16
dc.identifier.citationLadelta V, Kim JD, Bilalis P, Gnanou Y, Hadjichristidis N (2018) Block Copolymers of Macrolactones/Small Lactones by a “Catalyst-Switch” Organocatalytic Strategy. Thermal Properties and Phase Behavior. Macromolecules. Available: http://dx.doi.org/10.1021/acs.macromol.8b00153.
dc.identifier.issn0024-9297
dc.identifier.issn1520-5835
dc.identifier.doi10.1021/acs.macromol.8b00153
dc.identifier.urihttp://hdl.handle.net/10754/627349
dc.description.abstractPoly(macrolactones) (PMLs) can be considered as biodegradable alternatives of polyethylene; however, controlling the ring-opening polymerization (ROP) of macrolactone (ML) monomers remains a challenge due to their low ring strain. To overcome this problem, phosphazene (t-BuP4), a strong superbase, has to be used as catalyst. Unfortunately, the one-pot sequential block copolymerization of MLs with small lactones (SLs) is impossible since the high basicity of t-BuP4 promotes both intra- and intermolecular transesterification reactions, thus leading to random copolymers. By using ROP and the “catalyst-switch” strategy [benzyl alcohol, t-BuP4/neutralization with diphenyl phosphate/(t-BuP2)], we were able to synthesize different well-defined PML-b-PSL block copolymers (MLs: dodecalactone, ω-pentadecalactone, and ω-hexadecalactone; SLs: δ-valerolactone and ε-caprolactone). The thermal properties and the phase behavior of these block copolymers were studied by differential scanning calorimetry and X-ray diffraction spectroscopy. This study shows that the thermal properties and phase behavior of PMLs-b-PSLs are largely influenced by the PMLs block if PMLs components constitute the majority of the block copolymers.
dc.description.sponsorshipResearch was supported by King Abdullah University of Science and Technology (KAUST).
dc.publisherAmerican Chemical Society (ACS)
dc.relation.urlhttps://pubs.acs.org/doi/10.1021/acs.macromol.8b00153
dc.rightsThis document is the Accepted Manuscript version of a Published Work that appeared in final form in Macromolecules, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://pubs.acs.org/doi/10.1021/acs.macromol.8b00153.
dc.titleBlock Copolymers of Macrolactones/Small Lactones by a “Catalyst-Switch” Organocatalytic Strategy. Thermal Properties and Phase Behavior
dc.typeArticle
dc.contributor.departmentChemical Science Program
dc.contributor.departmentKAUST Catalysis Center (KCC)
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.contributor.departmentPolymer Synthesis Laboratory
dc.identifier.journalMacromolecules
dc.eprint.versionPost-print
kaust.personLadelta, Viko
kaust.personKim, Joey D.
kaust.personBilalis, Panagiotis
kaust.personGnanou, Yves
kaust.personHadjichristidis, Nikos
dc.date.published-online2018-03-16
dc.date.published-print2018-04-10


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