【摘要】 以4,4′-二(4-硝基苯氧基)二苯醚为原料,经过Fe粉还原法合成一种制备聚酰亚胺的单体芳香二胺4,4′-二(4-氨基苯氧基)二苯醚.考察了硝基化合物与Fe粉的摩尔比、反应温度以及反应时间对产物收率的影响,优化了工艺条件,并用傅立叶红外光谱仪(FT-IR)、差示扫描量热仪(DSC)以及高效液相色谱仪(HPLC)对产物进行了表征.实验结果表明:在硝基化合物与Fe粉的摩尔比为1∶7、反应温度为110℃、反应4 h的条件下得到的产物收率可达到85.54%,产物的熔点为123.3℃,纯度为97.4%.更多还原

【Abstract】 4,4′-bis(4-nitrophenoxy) diphenylether was reduced to 4,4′-bis(4-aminophenoxy) diphenylether by Fe powder,it was a monomer diethylenetriamine of polyimide.Factors including the molar ratio of nitro-compound and Fe powder,reaction temperature and reaction time were investigated with the optimized process conditions and the characterized products by means of FT-IR,DSC and HPLC.The results indicat that the yield of production is 85.54%,it′s melt point 123.3 ℃ and purity 97.4%,when the molar ratio of nitro compound and Fe powder is 1∶7 and reaction temperature at 110 ℃ for 4 h.更多还原