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用微波方法在H型Y、ZSM -5和丝光沸石分子筛孔道内合成了纳米聚苯胺。NaY、ZSM-5和丝光沸石分子筛在NH4 Cl溶液中回流 ,然后经过滤、洗涤、烘干研碎 ,再于 4 50℃下培烧可得到H型Y、ZSM -5和丝光沸石。苯胺分子在正己烷溶液中扩散进入分子筛孔道 ,然后过滤、洗涤、干燥。样品经微波短时间辐射后 ,用氢氟酸除去分子筛骨架 ,再进行过滤、洗涤、干燥 ,然后进行红外光谱测试分析。结果表明 ,微波条件下苯胺可以在合适的分子筛孔道内发生聚合 ,且不同分子筛内合成的聚苯胺的结构有所差别。在分子筛孔道内 ,微波作用合成的聚苯胺与化学氧化法合成的聚苯胺具有相似的结构 ,即本征态的聚苯胺 ,且微波条件下苯胺的聚合机理为自由基聚合机理。
Microwave polyaniline was synthesized in H, Y, ZSM-5 and mordenite zeolites. NaY, ZSM-5 and mordenite zeolites were refluxed in NH4Cl solution, then filtered, washed, dried and crushed, and then calcined at 4 50 ° C to obtain H type Y, ZSM-5 and mordenite. Aniline molecules in n-hexane solution into the molecular sieve pores, and then filtered, washed and dried. After the sample was irradiated by microwave for a short time, the molecular sieve framework was removed by hydrofluoric acid, then filtered, washed, dried and then analyzed by infrared spectroscopy. The results show that aniline can be polymerized in the appropriate molecular sieve channels under microwave conditions, and the structures of polyaniline synthesized in different molecular sieves are different. Polyaniline synthesized by microwave and polyaniline synthesized by chemical oxidation have the similar structure as the polyaniline in the state of molecular sieves, and the polymerization mechanism of aniline in the microwave is the free radical polymerization mechanism.