NDLI: 5-(methacrylamido)tetrazole and vinyl triazole based copolymers as novel anhydrous proton conducting membranes

Content Provider	Springer Nature Link
Author	Sinirlioglu, Deniz Muftuoglu, Ali Ekrem Bozkurt, Ayhan
Copyright Year	2013
Abstract	Polymer electrolytes that have ability to conduct protons at high temperatures have become crucial as the membranes for proton exchange membrane fuel cells (PEMFC) in anhydrous systems. In this work, a novel copolymer based on 5-(methacrylamido)tetrazole (MTet) and vinyl triazole (VTri) was prepared by conventional free-radical copolymerization at several monomer feed ratios to attain poly(VTri-co-MTet) copolymers. The copolymer samples were doped with H$_{3}$PO$_{4}$ at several stoichiometric ratios to obtain proton conductive copolymer electrolytes. The obtained membranes were analyzed by FTIR, $^{1}$H-NMR, Thermogravimetric Analysis (TGA), Differantial Scanning Calorimetry (DSC), Scanning Electron Microscopy (SEM), Cyclic Voltammetry (CV), and Impedance Spectroscopy. The compositions and molecular weights of copolymers were determined via $^{1}$H-NMR analysis. TGA demonstrated that the copolymers are thermally stable up to approximately 220 °C. DSC results illustrated both the homogeneity of the materials by the appearance of a single T$_{g}$ and the plasticizing effect of the dopant. SEM analysis provided further evidence for the homogeneity of the membranes. CV results demonstrated that the stability window of P(VTri-co-MTet) is 3 V. The copolymer electrolytes, P(VTri-co-MTet)2:1 X = 2, P(VTri-co-MTet)1:1 X = 2, and P(VTri-co-MTet)1:2 X = 2 showed maximum proton conductivities of 0.012 Scm$^{−1}$, 0.014 Scm$^{−1}$ and 0.016 Scm$^{−1}$, respectively, at 150 °C and anhydrous conditions.
Starting Page	1
Ending Page	10
Page Count	10
File Format	PDF
ISSN	10229760
Journal	Journal of Polymer Research
Volume Number	20
Issue Number	9
e-ISSN	15728935
Language	English
Publisher	Springer Netherlands
Publisher Date	2013-08-18
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	5-(methacrylamido)tetrazole Vinyl triazole Copolymer Polymer electrolyte Proton conductivity Polymer Sciences Industrial Chemistry/Chemical Engineering Characterization and Evaluation of Materials
Content Type	Text
Resource Type	Article
Subject	Organic Chemistry Materials Chemistry Polymers and Plastics

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