Detailed Information

Cited 0 time in webofscience Cited 0 time in scopus
Metadata Downloads

Reduced In-Plane Swelling of Nafion by a Biaxial Modification Process

Authors
Hink, SteffenHenkensmeier, DirkJang, Jong HyunKim, Hyoung-JuhnHan, JongheeNam, Suk-Woo
Issue Date
6월-2015
Publisher
WILEY-V C H VERLAG GMBH
Keywords
direction of swelling; ionomers; polymer electrolyte membrane fuel cell; shape memory effect; wide-angle x-ray scattering
Citation
MACROMOLECULAR CHEMISTRY AND PHYSICS, v.216, no.11, pp.1235 - 1243
Indexed
SCIE
SCOPUS
Journal Title
MACROMOLECULAR CHEMISTRY AND PHYSICS
Volume
216
Number
11
Start Page
1235
End Page
1243
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/93423
DOI
10.1002/macp.201500063
ISSN
1022-1352
Abstract
A biaxial modification process to reduce the in-plane swelling of perfluorosulfonic acid polymers is demonstrated for Nafion 212 membranes. The process is based on the one-way shape memory effect of the polymer, which can be installed by drying under constrained conditions and observed by water swelling. The through-plane/in-plane swelling ratio at 30 degrees C for treated Nafion 212 increases from 1.4 to 5.8 (ex situ) and approximate to 25 (after humidity cycling in a fuel cell). Young modulus and tensile strength increase. X-ray diffraction analysis shows an increase of crystallinity. The influence on through- and in-plane proton conductivity is studied. Finally, fuel cell tests are presented. The results suggest that the process enhances the durability of fuel cell systems under changing humidity conditions.
Files in This Item
There are no files associated with this item.
Appears in
Collections
Graduate School > GREEN SCHOOL (Graduate School of Energy and Environment) > 1. Journal Articles

qrcode

Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.

Altmetrics

Total Views & Downloads

BROWSE