Interfacial engineering of a polymer-MOF composite by vitrification
Non-stoichoimetric crystalline ZIF-62 was used as the filler for a 6FDA-DAM polyimide-based composite membrane. In situ melting and vitrification of ZIF-62 was then performed, to yield the ZIF-62 glass phase (a g ZIF-62), within the polymer matrix. Focus ion beam scanning electron microscopy (FIB-SE...
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Veröffentlicht in: | Chemical communications (Cambridge, England) England), 2020-03, Vol.56 (25), p.369-3612 |
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Hauptverfasser: | , , , , , , , , , |
Format: | Artikel |
Sprache: | eng |
Online-Zugang: | Volltext |
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Zusammenfassung: | Non-stoichoimetric crystalline ZIF-62 was used as the filler for a 6FDA-DAM polyimide-based composite membrane.
In situ
melting and vitrification of ZIF-62 was then performed, to yield the ZIF-62 glass phase (a
g
ZIF-62), within the polymer matrix. Focus ion beam scanning electron microscopy (FIB-SEM), thermal characterisation and membrane separation tests demonstrate the filling of voids at the MOF/polymer interface from the liquid phase of ZIF-62.
In situ
vitrification of MOF within polymer can rigidify the polymer chains and remove interfacial defects, leading to a significantly enhanced membrane selectivity. |
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ISSN: | 1359-7345 1364-548X |
DOI: | 10.1039/d0cc00664e |