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Issue 33, 2013
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Imidazolium-containing, hydrophobic–ionic–hydrophilic ABC triblock copolymers: synthesis, ordered phase-separation, and supported membrane fabrication

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Abstract

Novel ABC triblock copolymers containing hydrophobic, imidazolium ionic liquid (IL)-based ionic, and non-charged hydrophilic blocks were synthesized by direct sequential, ring-opening metathesis polymerization (ROMP) of three chemically immiscible norborene monomers. The resulting ABC triblock copolymers were found by small-angle X-ray scattering to phase-separate into different nanostructures in their pure melt states, depending on their block sequence and compositions. Supported composite membranes of these triblock copolymers were successfully fabricated with defect-free, ≤20 microns thick top coatings. Preliminary CO2/light gas transport studies demonstrated the potential of this new type of IL-based block copolymer material for gas separation applications.

Graphical abstract: Imidazolium-containing, hydrophobic–ionic–hydrophilic ABC triblock copolymers: synthesis, ordered phase-separation, and supported membrane fabrication

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Article information


Submitted
19 Apr 2013
Accepted
09 Jul 2013
First published
18 Jul 2013

Soft Matter, 2013,9, 7923-7927
Article type
Communication

Imidazolium-containing, hydrophobic–ionic–hydrophilic ABC triblock copolymers: synthesis, ordered phase-separation, and supported membrane fabrication

E. F. Wiesenauer, P. T. Nguyen, B. S. Newell, T. S. Bailey, R. D. Noble and D. L. Gin, Soft Matter, 2013, 9, 7923
DOI: 10.1039/C3SM51085A

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