Novel proton exchange membranes have been prepared by in synthesis functionalization of a polyurethane matrix with a sulfonic group containing chain terminals. The synthesis procedure was based on the use of two polyethylene glycols with nominal molecular weight of 300 and 1 k and 4,4′ dicyclohexylmethane diisocyanate in presence of the sodium salt of isethionic acid as a donor of the sulfonic group. Glycerol was added in order to improve by reticulation the stability of the cast films. The membranes were characterized in terms of swelling, morphology, methanol permeability, proton conductivity, and ion exchange capacity. The best H2/air cell performance was achieved at 80 °C with a maximum power density of 16.9 mW/cm2 at a voltage of about 0.35 V. Polyurethane based ionomeric membranes have proved to be interesting candidates for proton exchange membrane fuel cells (PEMFC) applications.

References

References
1.
Hernandez
,
L.
, and
Kafarov
,
V.
, 2009, “
Use of Bioethanol for Sustainable Electrical Energy Production
,”
Int. J. Hydrogen Energy
,
34
, pp.
7041
7050
.
2.
Oliva
,
D. G.
,
Francesconi
,
J. A.
,
Mussati
,
M. C.
, and
Aguirre
,
P. A.
, 2010, “
Energy Efficiency Analysis of an Integrated Glycerin Processor for PEM Fuel Cells: Comparison With an Ethanol-Based System
,”
Int. J. Hydrogen Energy
,
35
, pp.
709
724
.
3.
Salemme
,
L.
,
Menna
,
L.
, and
Simeone
,
M.
, 2010, “
Thermodynamic Analysis of Ethanol Processors—PEM Fuel Cell Systems
,”
Int. J. Hydrogen Energy
,
35
, pp.
3480
3489
.
4.
Smitha
,
B.
,
Sridhar
,
S.
, and
Khan
,
A. A.
, 2005, “
Solid Polymer Electrolyte Membranes for Fuel Cell Applications—A review
,”
J. Membrane Sci.
,
259
, pp.
10
26
.
5.
Hickner
,
M. A.
,
Ghassemi
,
H.
,
Kim
,
Y. S.
,
Einsla
,
B. R.
, and
McGrath
,
J. E.
, 2004, “
Alternative Polymer Pystems for Proton Exchange Membranes (PEMs)
,”
Chem. Rev.
,
104
, pp.
4587
4612
.
6.
Kerres
,
J. A.
, 2001, “
Development of Ionomer Membranes for Fuel Cells
,”
J. Membrane Sci.
,
185
, pp.
3
27
.
7.
Kreuer
,
K. D.
, 2001, “
On the Development of Proton Conducting Polymer Membranes for Hydrogen and Methanol Fuel Cells
,”
J. Membrane Sci.
,
185
, pp.
29
39
.
8.
Król
,
P.
, 2007, “
Synthesis Methods, Chemical Structures and Phase Structures of Linear Polyurethanes. Properties and Applications of Linear Polyurethanes in Polyurethane Elastomers, Copolymers and Ionomers
,”
Prog. Mater. Sci.
,
52
, pp.
915
1015
.
9.
Chen
,
Z.
,
Holmberg
,
B.
,
Li
,
W.
,
Wang
,
X.
,
Deng
,
W.
,
Munoz
,
R.
, and
Yan
,
Y.
, 2006, “
Nafion/Zeolite Nanocomposite Membrane by in Situ Crystallization for a Direct Methanol Fuel Cell
,”
Chem. Mater.
,
18
, pp.
5669
5675
.
10.
Alberti
,
G.
,
Casciola
,
M.
,
Massinelli
,
L.
, and
Bauer
,
B.
, 2001, “
Polymeric Proton Conducting Membranes for Medium Temperature Fuel Cells (110–160 °C)
,”
J. Membrane Sci.
,
185
, pp.
73
81
.
11.
Koberstein
,
J. T.
, and
Stein
,
R. S.
, 1983, “
Small-Angle X-Ray Scattering Studies of Microdomain Structure in Segmented Polyurethane Elastomers
,”
J. Polymer Sci.
,
21
, pp.
1439
1472
.
12.
Leung
,
L. M.
, and
Koberstein
,
J. T.
, 1985, “
Small-Angle Scattering Analysis of Hard-Microdomain Structure and Microphase Mixing in Polyurethane Elastomers
,”
J. Polymer Sci.
,
23
, pp.
1883
1913
.
13.
Coleman
,
M. M.
,
Skrovanek
,
D. J.
,
Hu
,
J.
, and
Painter
,
P. C.
, 1988, “
Hydrogen Bonding in Polymer Blends. 1. FTIR Studies of Urethane-Ether Blends
,”
Macromolecules
,
21
, pp.
59
65
.
14.
Hong
,
J.
,
Lillya
,
C. P.
, and
Chien
,
J. C. W.
, 1992, “
Degree of Phase Separation in Polyether-Polyurethane Copolymers With Different Chemical Structures of Hard Segments
,”
Polymer
,
33
, pp.
4347
4351
.
15.
Lan
,
P. N.
,
Corneillie
,
S.
,
Schacht
,
E.
,
Davies
,
M.
, and
Shard
,
A.
, 1996, “
Synthesis an Characterization of Segmented Polyurethanes Based on Amphiphilic Polyether Diols
,”
Biomaterials
,
17
, pp.
2273
2280
.
16.
Garrett
,
J. T.
,
Xu
,
R.
,
Cho
,
J.
, and
Runt
,
J.
, 2003, “
Phase Separation of Diamine Chain-Extended Poly(Urethane) Copolymers: FTIR Spectroscopy and Phase Transitions
,”
Polymer
44
, pp.
2711
2719
.
17.
Dyana Merline
,
J.
,
Reghunadhan Nair
,
C. P.
,
Gouri
,
C.
,
Bandyopadhyay
,
G. G.
, and
Ninan
,
K. N.
, 2008, “
Polyether Polyurethanes: Synthesis, Characterization, and Thermoresponsive Shape Memory Properties
,”
J. Appl. Polymer Sci.
,
107
, pp.
4082
4092
.
18.
Chattopadhyay
,
D. K.
,
Sreedhar
,
B.
, and
Raju
,
K. V. S. N.
, 2006, “
The Phase Mixing Studies on Moisture Cured Polyurethane-Ureas During Cure
,”
Polymer
,
47
, pp.
3814
3825
.
19.
Daniel-da-Silva
,
A. L.
,
Moura Bordado
,
J. C.
, and
Martin-Martinez
,
J. M.
, 2007, “
Evidences of Phase Separation in Moisture-Cured Poly(Urethane Urea)s by Means of Temperature Modulated Differential Scanning Calorimetry
,”
J. Polymer Sci.: Part B
,
45
, pp.
3034
3045
.
20.
Coutinho
,
F. M. B.
,
Delpech
,
M. C.
,
Alves
,
T. L.
, and
Ferreira
,
A. A.
, 2003, “
Degradation Profiles of Cast Films of Polyurethane and Poly(Urethane-Urea) Aqueous Dispersions Based on Hydroxyl-Terminated Polybutadiene and Different Diisocyanates
,”
Polymer Degrad. Stab.
,
81
, pp.
19
27
.
21.
Saito
,
M.
,
Tsuzuki
,
S.
,
Hayamizu
,
K.
, and
Okada
,
T.
, 2006, “
Alcohol and Proton Transport in Perfluorinated Ionomer Membranes for Fuel Cells
,”
J. Phys. Chem. B
,
110
, pp.
24410
24417
.
22.
Lin
,
C.-K.
,
Kuo
,
J.-F.
, and
Chen
,
C.-Y.
, 2009, “
Preparation of Nitrated Sulfonated Poly(Ether Ether Ketone) Membranes for Reducing Methanol Permeability in Direct Methanol Fuel Cell Applications
,”
J. Power Sources
,
187
, pp.
341
347
.
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