Issue 27, 2021

Mesoporous polyetherimide thin films via hydrolysis of polylactide-b-polyetherimide-b-polylactide

Abstract

Mesoporous polyetherimides are important high-performance polymers. Conventional strategies to prepare porous polyetherimides, and polyimide in general, are based on covalent organic framework or thermolysis of sacrificial polymers. The former produces micropores due to intrinsically crosslinked microstructures, and the latter results in macropores because of a blowing effect by the sacrificial polymers. The preparation of mesopores remains a challenge. Here we have prepared mesoporous polyetherimide films by hydrolyzing polylactide-b-polyetherimide-b-polylactide (AIA). Controlled by molecular weight and volume fraction of polylactide in AIA, the porous films exhibit an average pore width of 24 nm. The mesoporous polyetherimide films exhibit a storage modulus of ∼1 GPa at ambient temperatures. This work advances the chemistry of high-performance polymers and provides an alternative strategy to prepare mesoporous polymers, enabling potential use as high-performance membranes for separation, purification, and electrochemistry.

Graphical abstract: Mesoporous polyetherimide thin films via hydrolysis of polylactide-b-polyetherimide-b-polylactide

Supplementary files

Article information

Article type
Paper
Submitted
06 may 2021
Accepted
20 may 2021
First published
26 may 2021

Polym. Chem., 2021,12, 3939-3946

Author version available

Mesoporous polyetherimide thin films via hydrolysis of polylactide-b-polyetherimide-b-polylactide

D. Guo, J. Riet, A. Khan, Y. Guo, Z. Xu, T. Liu and G. Liu, Polym. Chem., 2021, 12, 3939 DOI: 10.1039/D1PY00601K

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