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Fundamentals of selective ion transport through multilayer polyelectrolyte membranes

Autor
Cheng, C.; Yaroshchuk, A.; Bruening, M.L.
Tipus d'activitat
Article en revista
Revista
Langmuir
Data de publicació
2013-02-12
Volum
29
Número
6
Pàgina inicial
1885
Pàgina final
1892
DOI
https://doi.org/10.1021/la304574e Obrir en finestra nova
Projecte finançador
DE-FG02-98ER14907
Repositori
http://hdl.handle.net/2117/18723 Obrir en finestra nova
Resum
Membranes composed of multilayer poly(4-styrenesul- fonate) (PSS)/protonated poly(allylamine) (PAH) fi lms on porous alumina supports exhibit high monovalent/divalent cation selectivities. Remarkably, the di ff usion dialysis K + /Mg 2+ selectivity is >350. However, in nano fi ltration this selectivity is only 16, suggesting some convective ion transport through fi lm imperfections. Under MgCl 2 concentration gradients across either (PSS/PAH) 4 - or (PSS/ PAH) 4 PSS-coated alumina, transmembrane...
Citació
Cheng, C.; Yaroshchuk, A.; Bruening, M. Fundamentals of selective ion transport through multilayer polyelectrolyte membranes. "Langmuir", 14 Gener 2013, vol. 29, núm. 6, p. 1885-1892.
Paraules clau
Alumina, Chemical contamination, Dialysis, Ion selective membranes, Ionic strength, Multilayer films, Multilayers, Nanofiltration, Polyelectrolytes, Positive ions

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