Time-Dependent Behavior of Cation Transport through Cellulose Acetate-Cationic Polyelectrolyte Membranes

Tutkimustuotos: Lehtiartikkeli

Tutkijat

Organisaatiot

  • VTT Technical Research Centre of Finland
  • University Erlangen-Nürnberg
  • Friedrich-Alexander University Erlangen-Nürnberg

Kuvaus

Cation transport through a cellulose acetate-poly(N,N-dimethylaminoethyl methacrylate) membrane (CA:PDMAEMA) was studied with scanning electrochemical microscope (SECM) and the thickness increase of the membrane was monitored with ellipsometry. Upon addition of the polyelectrolyte PDMAEMA, the permeability of the probe cation (ferrocenium methanol, FcMeOH) was increased as much as 40-fold. Soaking membranes in an electrolyte solution doubled the permeability in plain CA membranes, whereas for PDMAEMA containing membranes the opposite was observed and the permeability was reduced by 20–40%. This time-dependent behavior is shown to be a result of the presence of PDMAEMA within the membrane matrix, thus providing an interesting platform for controllable membrane permeability.

Yksityiskohdat

AlkuperäiskieliEnglanti
SivutH39-H44
Sivumäärä6
JulkaisuJournal of the Electrochemical Society
Vuosikerta165
Numero2
TilaJulkaistu - 2 helmikuuta 2018
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu
TapahtumaElectrochemical Society Meeting - New Orleans, Yhdysvallat
Kesto: 28 toukokuuta 20171 kesäkuuta 2017
Konferenssinumero: 231

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