Water uptake characteristics and backbone flexibility of novel polymers for proton exchange membranes

P. M. Mangiagli, C. S. Ewing, K. Xu, Q. Wang, M. A. Hickner

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Gravimetrie analysis was performed during a step change in relative humidity for a seriss of sulfonated polymers to determine their dynamic water uptake characteristics. The mass change was recorded as a function of time for both stiff-backboned and flexible-backboned polymers when the humidity was instantaneously increased from 40 to 50 %. The observed water uptake profiles were distinctly different based on the inferred stiffness of the sulfonated polymer backbone. A sulfonated poly(sulfone)-based membrane had a slower mass uptake than more flexible Nafion with time constants of 307 s and 150 s for the sulfonated poly(sulfone) and NRE212, respectively. The dynamic water absorption properties were measured for a series of sulfonated poly(styrene)-b- poly(vinylidene fluoride)-b-sulfonated poly(styrene) membranes. The backbone flexibility of these polymers was intermediate to that of the poly(sulfone) and Nafion membranes and could be tuned based on the molecular weight of the poly(styrene) blocks and sulfonation level.

Original languageEnglish (US)
Title of host publicationECS Transactions - Proton Exchange Membrane Fuel Cells 8
Pages1487-1492
Number of pages6
Edition2 PART 2
DOIs
StatePublished - Dec 1 2008
EventProton Exchange Membrane Fuel Cells 8, PEMFC - 214th ECS Meeting - Honolulu, HI, United States
Duration: Oct 12 2008Oct 17 2008

Publication series

NameECS Transactions
Number2 PART 2
Volume16
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Other

OtherProton Exchange Membrane Fuel Cells 8, PEMFC - 214th ECS Meeting
CountryUnited States
CityHonolulu, HI
Period10/12/0810/17/08

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Fingerprint Dive into the research topics of 'Water uptake characteristics and backbone flexibility of novel polymers for proton exchange membranes'. Together they form a unique fingerprint.

  • Cite this

    Mangiagli, P. M., Ewing, C. S., Xu, K., Wang, Q., & Hickner, M. A. (2008). Water uptake characteristics and backbone flexibility of novel polymers for proton exchange membranes. In ECS Transactions - Proton Exchange Membrane Fuel Cells 8 (2 PART 2 ed., pp. 1487-1492). (ECS Transactions; Vol. 16, No. 2 PART 2). https://doi.org/10.1149/1.2981989