Nanoporous Block Copolymer Membranes with Enhanced Solvent Resistance Via UV‐Mediated Cross‐Linking Strategies

Frieß, Florian V.; Hu, Qiwei; Mayer, Jannik; Gemmer, Lea; Presser, Volker; Balzer, Bizan N.; Gallei, Markus

doi:10.1002/marc.202270007

Cited by 4 publications

(2 citation statements)

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“…The UV-induced crosslinking is widely used for its nondestruction to isoporous structures. For instance, Florian et al [6] prepared isoporous membranes from carefully synthesized BCPs containing the UV-addressable group (i.e., benzophenone). After being crosslinked by the UV-irradiation, crosslinked membranes exhibited good resistance to a few mild solvents such as ethanol as well as water/ethanol mixture.…”

Section: Introductionmentioning

confidence: 99%

Hyper‐crosslinked Isoporous Block Copolymer Membranes with Robust Solvent Resistance and Customized Pore Sizes for Precise Separation

Wang,

Shu,

Wei

et al. 2023

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Isoporous block copolymer membranes are viewed as the next‐generation separation membranes for their unique structures and urgent application in precise separation. However, an obvious weakness for such membranes is their poor solvent‐resistance which limits their applications to aqueous solution, and isoporous membranes with superior solvent‐resistance and tunable pore size have been rarely prepared before. Herein, self‐supporting isoporous membranes with excellent solvent resistance are prepared by the facile yet robust hyper‐crosslinking approach which is able to create a rigid network in whole membranes. The hyper‐crosslinking is found to be a novel and non‐destructive approach that does not change pore size and isoporous structure during the reaction, and the resulting hyper‐crosslinked isoporous membranes display superior structural and separation stability to a broad range of solvents with varied polarities for months to years. More importantly, hyper‐crosslinking has proved to be a universal strategy that is applicable to isoporous membranes with varied pore size and pore chemistry, offering an important opportunity to prepare solvent‐resistant isoporous membranes with customizable pore size and pore functionality that are important to realize their accurate separations in organic solvents. This concept is demonstrated finally by precise and on‐demand separation of nanoparticles with the prepared membranes.

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Section: Introductionmentioning

confidence: 99%

Hyper‐crosslinked Isoporous Block Copolymer Membranes with Robust Solvent Resistance and Customized Pore Sizes for Precise Separation

Wang,

Shu,

Wei

et al. 2023

Small

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“…29 Although valuable work has been published in this field, 4,19,21 there is still need for improvement regarding the membranes' mechanical stability. Amongst others, 30 our group has approached this issue by incorporating UV-crosslinkable moieties into a methacrylate-based amphiphilic BCP prepared by ATRP, 31 leading to improved solvent resistance and mechanical stability. Nonetheless, regarding mechanical and chemical robustness, BCPs containing PAN-segments or copolymers thereof could be a benefit without the necessity of post-treatments.…”

Section: Introductionmentioning

confidence: 99%