Tunable physicochemical and free volume characteristics of novel terpolymer–poly(vinyl alcohol)-grafted membranes for direct methanol fuel cells
作者： V. Vasanthakumar , S. Mohanapriya , A. Priyadharsan , P. M. Anbarasan , P. M. G. Nambissan
DOI: 10.1039/C8NJ00295A
关键词: Fourier transform infrared spectroscopy 、 Polymer 、 Vinyl alcohol 、 Chemistry 、 Condensation polymer 、 Chemical engineering 、 Thermogravimetric analysis 、 Proton NMR 、 Membrane 、 Thermal stability
摘要: Here, we describe a facile and scalable approach to fabricate novel ABC-type terpolymer-based proton conducting membranes (PCMs) elucidate the benefits of utilizing terpolymer composite membrane polymer materials as electrolytes for direct methanol fuel cells (DMFC). A has been synthesized from terephthaldehyde, 2-aminothiophenol formaldehyde (TAF) by condensation polymerization under optimized conditions. The chemical structure, thermal stability, size morphology TAF were studied various techniques, such scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), Proton nuclear magnetic resonance (1H NMR), Fourier transform infrared (FT-IR), thermogravimetric analysis diffraction (XRD) analysis. Solution casting using varied amounts this cross-linkable allowed tuning multiple interfaces produce with improved properties. These their preliminary electrochemical properties (ionic exchange capacity, conductivity, swelling rate) based on conductance. In addition, positron annihilation spectroscopic techniques used characterize sizes concentrations free volume defects in samples, which can significantly alter physical thermodynamic these complex materials.
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