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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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含芴和双酚AF型氮杂萘酮的两亲嵌段聚芳醚砜酮离聚物的合成与性能
DOI: 10.3724/SP.J.1105.2012.11396, PP. 902-909
Keywords: 离聚物,嵌段聚芳醚砜酮,双酚芴,氮杂萘酮,质子交换膜燃料电池
Abstract:
采取"二锅二步"的聚合方法以双酚芴、4,4'-二氯二苯砜、双酚AF型二氮杂萘酮、二氟二苯酮磺酸钠为原料制备了含芴-聚芳醚砜憎水链段和双酚AF型二氮杂萘酮-磺化聚芳醚酮亲水链段的两亲嵌段聚芳醚砜酮离聚物,通过调整4种单体的比例以及预聚合、再缩合聚合工艺制备了一系列具有不同链段尺寸的芴-双酚AF型氮杂萘酮-两亲嵌段聚芳醚砜酮离聚物质子交换膜材料.通过黏度测试、傅里叶变换红外光谱(FTIR)、氢谱(1H-NMR)、热失重(TGA)等分析方法,对离聚物的结构和性能进行了表征,用蒸发溶剂法制备了质子交换膜,并考察膜的各种性能.实验结果表明,该系列离聚物的结构可控,热稳定性良好,5wt%热失重温度均高于250℃;由其制备的质子交换膜具有良好的耐醇性和耐甲醇渗透性能、优异的抗氧化性和水解稳定性、以及适当的质子导电率和吸水率,室温下该系列膜的甲醇渗透率在0.23×10-6~0.28×10-6cm2/s,比Nafion117具有更好的耐甲醇渗透性能;80℃下该系列膜的质子导电率与30℃时相比呈现倍增趋势,离聚物8e膜的质子导电率在80℃下达到了1.83×10-3S/cm.
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