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240902s2024 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202404560
|2 doi
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|a pubmed24n1520.xml
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|a (DE-627)NLM376937866
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|a (NLM)39206611
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a Blagojevic, Niklas
|e verfasserin
|4 aut
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| 245 |
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|a Toward Predicting the Formation of Integral-Asymmetric, Isoporous Diblock Copolymer Membranes
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|c 2024
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| 336 |
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Revised 29.08.2024
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|a published: Print-Electronic
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|a Citation Status Publisher
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|a © 2024 The Author(s). Advanced Materials published by Wiley‐VCH GmbH.
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|a The self-assembly and nonsolvent-induced phase separation (SNIPS) process of block copolymers and solvents enables the fabrication of integral-asymmetric, isoporous membranes. An isoporous top layer is formed by evaporation-induced self-assembly (EISA) and imparts selectivity for ultrafiltration of functional macromolecules or water purification. This selective layer is supported by a macroporous bottom structure that is formed by nonsolvent-induced phase separation (NIPS) providing mechanical stability. Thereby the permeability/selectivity tradeoff is optimized. The SNIPS fabrication involves various physical phenomena-e.g., evaporation, self-assembly, macrophase separation, vitrification - and multiple structural, thermodynamic, kinetic, and process parameters. Optimizing membrane properties and rationally designing fabrication processes is a challenge which particle simulation can significantly contribute to. Using large-scale particle simulations, it is observed that 1) a small incompatibility between matrix-forming block of the copolymer and nonsolvent, 2) a glassy arrest that occurs at a smaller polymer concentration, or 3) a higher dynamical contrast between polymer and solvent results in a finer, spongy substructure, whereas the opposite parameter choice gives rise to larger macropores with an elongated shape. These observations are confirmed by comparison to experiments on polystyrene (PS)-block-poly(4-vinylpyridine) (P4VP) diblock copolymer membranes, varying the chemical nature of the coagulant or the temperature of coagulation bath
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|a Journal Article
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|a block copolymer membranes
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|a evaporation‐induced self‐assembly (EISA)
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|a molecular modeling
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| 650 |
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4 |
|a nonsolvent‐induced phase separation (NIPS)
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1 |
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|a Das, Shibananda
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Xie, Jiayu
|e verfasserin
|4 aut
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| 700 |
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|a Dreyer, Oliver
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Radjabian, Maryam
|e verfasserin
|4 aut
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| 700 |
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|a Held, Martin
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Abetz, Volker
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Müller, Marcus
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g (2024) vom: 29. Aug., Seite e2404560
|w (DE-627)NLM098206397
|x 1521-4095
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|g year:2024
|g day:29
|g month:08
|g pages:e2404560
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|u http://dx.doi.org/10.1002/adma.202404560
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