TY - JOUR
T1 - Time-dependent behavior of cation transport through cellulose acetate-cationic polyelectrolyte membranes
AU - Hakanpää, Janina
AU - Yliniemi, Kirsi
AU - Wilson, Benjamin P.
AU - Putkonen, Matti
AU - Höhn, Sarah
AU - Kontturi, Eero
AU - Virtanen, Sannakaisa
AU - Murtomäki, Lasse
N1 - Funding Information:
Academy of Finland (JH, KY, BW, LM: Project No. 263 551, MP: Project No: 263 577, EK: Project No: 259 500) is acknowledged for the financial support of this work.
Publisher Copyright:
© The Author(s) 2018.
Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
PY - 2018/1/1
Y1 - 2018/1/1
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85048524392&partnerID=8YFLogxK
U2 - 10.1149/2.1231802jes
DO - 10.1149/2.1231802jes
M3 - Article
AN - SCOPUS:85048524392
SN - 0013-4651
VL - 165
SP - H39-H44
JO - Journal of the Electrochemical Society
JF - Journal of the Electrochemical Society
IS - 2
ER -
