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

Janina Hakanpää, Kirsi Yliniemi, Benjamin Wilson, Matti Putkonen, Sarah Höhn, Eero Kontturi, Sannakaisa Virtanen, Lasse Murtomäki

Tutkimustuotos: LehtiartikkeliArticleScientificvertaisarvioitu

340 Lataukset (Pure)

Abstrakti

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.
AlkuperäiskieliEnglanti
SivutH39-H44
Sivumäärä6
JulkaisuJournal of the Electrochemical Society
Vuosikerta165
Numero2
DOI - pysyväislinkit
TilaJulkaistu - 2 helmik. 2018
OKM-julkaisutyyppiA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
TapahtumaElectrochemical Society Meeting - New Orleans, Yhdysvallat
Kesto: 28 toukok. 20172 kesäk. 2017
Konferenssinumero: 231
http://www.electrochem.org/231

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