Vol 4: Preparation and Characterization of Nanocomposite Polymer Membranes Containing Functionalized SnO2 Additives.Report as inadecuate



 Vol 4: Preparation and Characterization of Nanocomposite Polymer Membranes Containing Functionalized SnO2 Additives.


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This article is from Membranes, volume 4.AbstractIn the research of new nanocomposite proton-conducting membranes, SnO2 ceramic powders with surface functionalization have been synthesized and adopted as additives in Nafion-based polymer systems. Different synthetic routes have been explored to obtain suitable, nanometer-sized sulphated tin oxide particles. Structural and morphological characteristics, as well as surface and bulk properties of the obtained oxide powders, have been determined by means of X-ray diffraction XRD, scanning electron microscopy SEM, Fourier Transform Infrared FTIR and Raman spectroscopies, N2 adsorption, and thermal gravimetric analysis TGA. In addition, dynamic mechanical analysis DMA, atomic force microscopy AFM, thermal investigations, water uptake WU measurements, and ionic exchange capacity IEC tests have been used as characterization tools for the nanocomposite membranes. The nature of the tin oxide precursor, as well as the synthesis procedure, were found to play an important role in determining the morphology and the particle size distribution of the ceramic powder, this affecting the effective functionalization of the oxides. The incorporation of such particles, having sulphate groups on their surface, altered some peculiar properties of the resulting composite membrane, such as water content, thermo-mechanical, and morphological characteristics.



Author: Scipioni, Roberto; Gazzoli, Delia; Teocoli, Francesca; Palumbo, Oriele; Paolone, Annalisa; Ibris, Neluta; Brutti, Sergio; Navarra, Maria Assunta

Source: https://archive.org/







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