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4 S. E. Kudaibergenov, Adv. Polym. Sci. 1999, 144: 115–197
spectra of the samples were measured on Bruker AC 250
spectrometer. Elemental analysis of the copolymers was
measured on Elementar Vario EL III. Thermogravimetric
analysis (TGA) of the copolymers was measured on STA
499C (Netzsch) with a heating rate of 10 ꢀC min21 under
nitrogen atmosphere. DSC measurements were carried out
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on DSC Q100 (TA) under nitrogen atmosphere from room
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21
ꢀ
ꢀ
temperature to 180 C, with a heating rate of 10 C min
.
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1993, 66, 77–82.
Gel permeation chromatography (GPC) measurements were
carried out on a Waters GPC e2695 instrument with three col-
umn set (Styragel HR3 1 HR4 1 HR5) equipped with refrac-
tive index detector (Waters 2414), and DMF (containing
1 g L21 LiBr) as eluent at 45 ꢀC. The calibration was per-
formed with poly(methyl methacrylate) standards in the range
of Mp 5 2580 to 981,000 (Polymer Standards Service-USA).
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14 M. D. Afonso, M. N. de Pinho, J. Membr. Sci. 2000, 179,
The proton conductivity of the polymers was measured on
Electrochemical Impedance Laboratory CHI 604B (CH Instru-
ments). The proton conductivity r can be calculated by using
the equation r 5 L/RA, where L and A are the thickness of
the samples and the contact area between the electrode and
the membrane, respectively. While the impedance R can be
obtained from Cole–Cole plot of the impedance diagram. In
these experiments, polymer membranes with thickness of
30–50 lm were sandwiched between two round electrodes.
The samples were heated to 180 ꢀC and held for 10 min.
Then the conductivities were measured during the cooling
process.
137–154.
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2009, 42, 3000–3004.
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ꢀ
19 T. Jimbo, P. Rami, A. Tanioka, S. Mafe, N. Minoura, J. Col-
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CONCLUSIONS
22 X. Chen, W. J. Z. Li, Z. Shao, W. Zhong, T. Y. Yu, J. Appl.
Polym. Sci. 1999, 73, 975–980.
A series of poly(VT-co-DIPVBP) are synthesized via free radi-
cal copolymerization. The reactivity ratio of VT and DIPVBP
is 0.251 and 0.345, respectively. Poly(VT-co-VBPA) can be
obtained from the hydrolysis of poly(VT-co-DIPVBP). The
copolymers are thermally stable under 190 ꢀC. The anhy-
drous proton conductivity of poly(VT-co-VBPA) can reach
1.54 3 1024 S cm21 at 170 ꢀC, which makes them great
promising for proton conducting materials in intermediate
temperature PEMFCs.
23 S. E. Kudaibergenov, N. Nuraje, V. V. Khutoryanskiy, Soft
Matter 2012, 8, 9302–9321.
24 H. T. Pu, Y. J. Qin, L. M. Tang, X. R. Teng, Z. H. Chang, Elec-
trochim. Acta 2009, 54, 2603–2609.
25 F. J. Jiang, H. T. Pu, W. H. Meyer, Y. S. Guan, D. C. Wan,
Electrochim. Acta 2008, 53, 4495–4499.
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ACKNOWLEDGMENTS
29 H. C. Luo, H. T. Pu, Z. H. Chang, D. C. Wan, H. Y. Pan, J.
Mater. Chem. 2012, 22, 20696–20705.
The project is sponsored by China High-Tech Development 863
Program (SS2012AA110501), Natural Science Foundation of
Shanghai (11ZR1439600), and Program for New Century Excel-
lent Talents in University (NCET-06-0379).
30 Q. F. Li, H. A. Hjuler, N. J. Bjerrum, J. Appl. Electrochem.
2001, 31, 773–779.
31 H. T. Pu, L. Wang, H. Y. Pan, D. C. Wan, J. Polym. Sci. Part
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