Long-Spaced Polyketones from ADMET Copolymerizations as Ideal Models for Ethylene/CO Copolymers
作者： Patrick Ortmann , Florian P. Wimmer , Stefan Mecking
DOI: 10.1021/ACSMACROLETT.5B00324
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摘要: Long-spaced polyketones containing 0–52.6 ketone groups per 1000 methylene units were prepared by ADMET copolymerization of docosa-1,21-dien-11-one (1) with undeca-1,10-diene (2), followed exhaustive hydrogenation. Melting point differences 5–10 °C found between these and their reported congeners from ethylene/CO copolymerizations comparable CO contents, which related to additional methyl branching occurring in insertion copolymerization. Consequently, ADMET-derived can act as defect-free model polyketones. Comparison polymers the same degrees other carbonyl functionalities (esters, carbonates) shows that partial compensation disturbance polyethylene crystallization goes along groups’ polarity.
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