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首页> 外文期刊>Journal of Macromolecular Science. Pure and Applied Chemistry >Synthesis and characterization of composite membranes derived from mono sulfonated poly (ether sulfone) and silicotungstic acid
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Synthesis and characterization of composite membranes derived from mono sulfonated poly (ether sulfone) and silicotungstic acid

机译：单磺化聚醚砜和硅钨酸复合膜的合成与表征

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摘要

A series of composite membranes based on mono sulfonated poly(ether sulfone) (SPES) embedded with silicotungstic acid (STA) was synthesized. SPES was synthesized by nucleophilic aromatic polymerization and solution blended with silicotungstic acid. Direct synthesis of sulfonated polymer controls the degree of sulfonation and this leads to higher thermal stability. The composite membranes were characterized for water uptake, swelling ratio, ion-exchange capacity, thermal stability and proton conductivity for evaluating the suitability of these membranes for fuel cells. The proton conductivity of the composite membranes was increased with increasing STA content. The conductivity of the composite membranes at 30C was increased from 0.082 S/cm to 0.095 S/cm, whereas the parent membrane shows 0.078 S/cm. The composite membranes not only have good proton conductivity, but also showed excellent thermal stability. This study shows that the composite membranes based on SPES and STA can be viable candidates for electrolyte membranes.
机译：合成了一系列基于单钨化聚醚砜（SPES）嵌入硅钨酸（STA）的复合膜。 SPES是通过亲核芳香族聚合反应合成的，并与硅钨酸溶液共混。磺化聚合物的直接合成控制磺化的程度，这导致更高的热稳定性。对复合膜的吸水率，溶胀率，离子交换能力，热稳定性和质子传导率进行了表征，以评估这些膜对燃料电池的适用性。随着STA含量的增加，复合膜的质子电导率增加。复合膜在30℃下的电导率从0.082S / cm增加到0.095S / cm，而母膜显示为0.078S / cm。该复合膜不仅具有良好的质子传导性，而且显示出优异的热稳定性。这项研究表明，基于SPES和STA的复合膜可以作为电解质膜的可行候选物。

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