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Updated: Sep 21, 2025

Depolymerizable Olefinic Polymers Based on Fused-Ring Cyclooctene Monomers
Published on: December 16, 2022
One-Step Approach to Polyester-Polyether Block Copolymers Using Highly Tunable Bicomponent Catalyst
Heng Li1, Guanchen He1, Ye Chen1
1Faculty of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China.
Abstract:
Phthalic anhydride and propylene/ethylene oxide are copolymerized at room temperature by a bicomponent metal-free catalyst comprising a mild phosphazene base and triethylborane. Provided with proper loadings of the two catalytic components, block copolymers with strict (AB)B type sequence structures and controlled molar mass (up to 60 kg mol-1) can be generated in one synthetic step, and the block architecture can be enriched by the use of mono-, di-, or tetrahydroxy initiators. The obtained polyester-polyether block copolymers readily undergo microphase-separation in bulk and nanoaggregation in selective (aqueous and alcoholic) solvents.
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