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首页> 外文期刊>Journal of Applied Polymer Science >Transport properties of blended sulfonated poly(styrene-isobutylene-styrene) and isopropyl phosphate membranes
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Transport properties of blended sulfonated poly(styrene-isobutylene-styrene) and isopropyl phosphate membranes

机译：混合磺化聚（苯乙烯 - 异丁烯 - 苯乙烯）和磷酸异丙基膜的运输性能

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This work discusses the effect of isopropyl phosphate (IP) on the transport properties of sulfonated poly(styrene-isobutylene-styrene) (SO3H SIBS) as membranes for direct methanol fuel cell (DMFC) and chemical and biological protective clothing (CBPC) applications. The properties were determined as a function of SIBS sulfonation level (i.e., 24, 34, 49, and 84 mol %) and IP loading (i.e., 1, 3, 5, 11, and 15 wt %). A comprehensive material characterization study (e.g., FTIR, TGA, AFM, and SAXS) was performed to confirm the presence of the phosphate groups in the polymer matrix, assess the thermal stability of the proton-exchange membranes (PEMs), and understand how the unique interactions between the phosphate and sulfonic groups influenced the nanostructure of SO3H SIBS. The transport properties, water absorption capabilities (i.e., swelling ratio, water uptake, etc.), oxidative stability, and ion-exchange capacity (IEC) were performed to evaluate the impact of IP on the properties of the resulting solvent-casted membranes. Results suggest that the morphology, thermal stability, and vapor permeability are governed by the sulfonation level, whereas the IEC, oxidative stability, water absorption capabilities, and the rest of the transport properties are dominated by the ionic content (i.e., sulfonic and phosphate groups) and their synergistic effects. (c) 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47009.
机译：这项工作讨论了磺化的聚（苯乙烯 - 异丁烯 - 苯乙烯）（SO3H SIBS）作为用于直接甲醇燃料电池（DMFC）和化学和生物防护服（CBPC）应用的膜的传输性质磷酸异丙酯的（IP）的影响。属性确定为SIBS磺化水平（即，24，34，49，和84摩尔％）和IP承载（即，1，3，5，11，和15％（重量））的函数。综合材料表征研究（例如，FTIR，TGA，AFM，和SAXS）进行，以确认在聚合物基体中的磷酸基团的存在下，评估所述质子交换膜（PEM的）的热稳定性，并了解磷酸和磺酸基团之间的相互作用独特影响SO3H SIBS的纳米结构。传输性能，吸水性能力（即，溶胀比，水吸收等），氧化稳定性，和离子交换容量（IEC）进行评价的IP上所得到的溶剂铸膜的性能带来的影响。结果表明，形态，热稳定性，和透湿性的由磺化水平管辖，而IEC，氧化稳定性，吸水性能力，和传输特性的其余部分是由离子含量占主导地位（即，磺酸和磷酸基）和它们的协同效应。 （c）2018 Wiley期刊，Inc.J.Phill。聚合物。 SCI。 2019年，136，47009。

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