One-Step Approach to Polyester–Polyether Block
Copolymers Using Highly Tunable Bicomponent Catalyst
Posted on 2019-07-22 - 12:35
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)nBm 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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Li, Heng; He, Guanchen; Chen, Ye; Zhao, Junpeng; Zhang, Guangzhao (2019). One-Step Approach to Polyester–Polyether Block
Copolymers Using Highly Tunable Bicomponent Catalyst. ACS Publications. Collection. https://doi.org/10.1021/acsmacrolett.9b00439
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AUTHORS (5)
HL
Heng Li
GH
Guanchen He
YC
Ye Chen
JZ
Junpeng Zhao
GZ
Guangzhao Zhang