Different salts of metals were used as the cationization agents to examine the effect on the cyclic oligomers.
比较了不同基质及阳离子剂对芳香环状聚膦酸酯分析结果的影响。
The cyclic arylether ketone(sulfone) oligomers containing hexafluoroisopropylidene unit were characterized by matrix-assisted laser desorption ionization time-of-flight mass spectrometry( MALDI-TOF-MS) using Na+ and Ag+ as cationization agents.
应用基质辅助激光解吸电离飞行时间质谱,在不同阳离子剂的存在下,对6氟双酚A聚芳醚酮(砜)环状低聚物的结构进行了确认,研究了环状化合物对金属离子的选择性及激光质谱表征含氟环状低聚物的适宜条件。
The results indicate that the method for synthesizing quarternary ammonium cationics using absolute acetic acid,trimethylamine and epichlorohydrin is better than that of using hydrochloric acid.
结果表明,采用无水乙酸与三甲胺、环氧氯丙烷合成季胺盐型阳离子剂的方法优于采用盐酸的方法;在10mL质量分数为10%、相对分子质量为3×106的非离子型聚丙烯酰胺水溶液中加入8mL浓度为2。
