Well-Defined Cyclic Triblock Terpolymers: A Missing Piece of the Morphology Puzzle
KAUST DepartmentChemical Science Program
KAUST Catalysis Center (KCC)
Physical Science and Engineering (PSE) Division
Polymer Synthesis Laboratory
Online Publication Date2016-10-27
Print Publication Date2016-11-15
Permanent link to this recordhttp://hdl.handle.net/10754/622494
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AbstractTwo well-defined cyclic triblock terpolymers, missing pieces of the terpolymer morphology puzzle, consisting of poly(isoprene), polystyrene, and poly(2-vinylpyridine), were synthesized by combining the Glaser coupling reaction with anionic polymerization. An Î±,Ï‰-dihydroxy linear triblock terpolymer (OH-PI1,4-b-PS-b-P2VP-OH) was first synthesized followed by transformation of the OH to alkyne groups by esterification with pentynoic acid and cyclization by Glaser coupling. The size exclusion chromatography (SEC) trace of the linear terpolymer precursor was shifted to lower elution time after cyclization, indicating the successful synthesis of the cyclic terpolymer. Additionally, the SEC trace of the cyclic terpolymer produced, after cleavage of the ester groups, shifted again practically to the position corresponding to the linear precursor. The first exploratory results on morphology showed the tremendous influence of the cyclic structure on the morphology of terpolymers. Â© 2016 American Chemical Society.
CitationPolymeropoulos G, Bilalis P, Hadjichristidis N (2016) Well-Defined Cyclic Triblock Terpolymers: A Missing Piece of the Morphology Puzzle. ACS Macro Letters 5: 1242–1246. Available: http://dx.doi.org/10.1021/acsmacrolett.6b00807.
SponsorsResearch reported in this publication supported by King Abdullah University of Science and Technology.
PublisherAmerican Chemical Society (ACS)
JournalACS Macro Letters