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

Hakanpää J, Yliniemi K, Wilson BP, Putkonen M, Höhn S, Kontturi E, Virtanen S, Murtomäki L (2018)

Publication Language: English

Publication Type: Journal article, Report

Publication year: 2018

Journal

Journal of The Electrochemical Society Electrochemical Society

DOI: 10.1149/2.1231802jes

Abstract

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.

Authors with CRIS profile

Sarah Höhn Lehrstuhl für Werkstoffwissenschaften (Korrosion und Oberflächentechnik) Sannakaisa Virtanen Professur für Werkstoffwissenschaften (Korrosion und Oberflächentechnik)

Involved external institutions

Aalto University Espoo FI Finland (FI)

How to cite

APA:

Hakanpää, J., Yliniemi, K., Wilson, B.P., Putkonen, M., Höhn, S., Kontturi, E.,... Murtomäki, L. (2018). Time-Dependent Behavior of Cation Transport through Cellulose Acetate-Cationic Polyelectrolyte Membranes. Journal of The Electrochemical Society. https://doi.org/10.1149/2.1231802jes

MLA:

Hakanpää, Janina, et al. "Time-Dependent Behavior of Cation Transport through Cellulose Acetate-Cationic Polyelectrolyte Membranes." Journal of The Electrochemical Society (2018).

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