Volume 21, Issue 3 2409139
Research Article

Well-Defined Block Copolymer Vitrimer Membranes

Radosław Górecki

Radosław Górecki

Environmental Science and Engineering Program, Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955–6900 Saudi Arabia

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Saibal Bhaumik

Saibal Bhaumik

Polymer Synthesis Laboratory, Chemistry Program, Physical Science and Engineering Division, KAUST Catalysis Center, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955–6900 Saudi Arabia

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Eyad Qasem

Eyad Qasem

Environmental Science and Engineering Program, Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955–6900 Saudi Arabia

Research & Development Center, Saudi Aramco, Dhahran, 31311 Saudi Arabia

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Livia Loiola

Livia Loiola

Environmental Science and Engineering Program, Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955–6900 Saudi Arabia

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Abdul-Hamid Emwas

Abdul-Hamid Emwas

Core Labs, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955–6900 Saudi Arabia

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Konstantinos Ntetsikas

Konstantinos Ntetsikas

Polymer Synthesis Laboratory, Chemistry Program, Physical Science and Engineering Division, KAUST Catalysis Center, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955–6900 Saudi Arabia

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Nikos Hadjichristidis

Corresponding Author

Nikos Hadjichristidis

Polymer Synthesis Laboratory, Chemistry Program, Physical Science and Engineering Division, KAUST Catalysis Center, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955–6900 Saudi Arabia

E-mail: [email protected]; [email protected]

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Suzana P. Nunes

Corresponding Author

Suzana P. Nunes

Environmental Science and Engineering Program, Biological and Environmental Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955–6900 Saudi Arabia

Chemical Engineering Program, Physical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955–6900 Saudi Arabia

Chemistry Program, KAUST Catalysis Center, Physical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955–6900 Saudi Arabia

E-mail: [email protected]; [email protected]

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First published: 26 November 2024
Citations: 2

Abstract

A well-defined α,ω-dialdehyde polyisoprene-b-polystyrene block copolymer, synthesized using anionic polymerization high-vacuum techniques, is employed to prepare vitrimers with tris(2-aminoethyl)amine as the cross-linking agent. The vitrimer network, featuring dynamic imine cross-links, results in robust, flexible, and solvent-resistant films, which are applicable in thin film composite membranes. These vitrimer membranes, with molecular weight cut-offs in the nanofiltration range, are successfully used for organic solvent separation and evaluated for gas separation. The cross-linking density, controlled by the cross-linker, affects the material's gas permeability and affinity for CO₂. The dynamic nature of the imine cross-links enables the vitrimer's self-healing ability, activated by heat treatment at temperatures as low as 50 °C. Additionally, the vitrimer membranes can be reprocessed through solvent dissolution in the presence of the excess cross-linking agent.

Conflict of Interest

The authors declare no conflict of Interest.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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