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Showing 1–2 of 2 results
Advanced filters: Author: Viko Ladelta Clear advanced filters

  • Well-defined multicrystalline multiblock polymers are essential model polymers for advancing the physics of crystallization but due to the different chain properties and incompatible synthetic methodologies, multicrystalline multiblock polymers with more than two crystallites are rarely reported. Here the authors combine polyhomologation, ring-opening polymerization and a catalyst switch strategy to synthesize a pentacrystalline pentablock quintopolymer.

    • Pengfei Zhang
    • Viko Ladelta
    • Nikos Hadjichristidis
    ResearchOpen Access
    Nature Communications
    Volume: 14, P: 1-11

  • Alkali metal carboxylates, which are readily available and widely used as food additives, were found to promote the ring-opening polymerization (ROP) of trimethylene carbonate (TMC) to produce poly(trimethylene carbonate) (PTMC). The sodium acetate-catalyzed ROP of TMC proceeded in the presence of an alcohol initiator under solvent-free conditions, even at very low catalyst loadings of 0.01–0.0001 mol%. This ROP system enabled the synthesis of PTMCs with predicted molecular weights ranging from 2400 to 11 700 g mol−1 and narrow dispersities (~1.23).

    • Kaoru Takojima
    • Tatsuya Saito
    • Toshifumi Satoh
    Research
    Polymer Journal
    Volume: 52, P: 103-110