MALDI-TOF质谱表征聚芳醚酮环状低聚物及其组分分布  

Characterization of Cyclic(aryl ether ketone)s by Matrix assisted Laser Desorption Ionization time of Flight Mass Spectrometry

作　　者：姜洪焱[1] 陈天禄[1] 齐颖华[1] 徐纪平[1] 

机构地区：[1]中国科学院长春应用化学研究所

出　　处：《高等学校化学学报》1998年第4期652-655,共4页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金

摘　　要：应用介质辅助激光解吸离子化飞行时间质谱（ＭＡＬＤＩ－ＴＯＦＭＳ），以二羟基苯甲酸为介质、Ｎ２（３３７ｎｍ）为激光源，对两种聚芳醚酮环状低聚物的结构进行了确认，研究了环状低聚物不同聚合度组分的分布规律，并且与ＧＰＣ质量分析法作了比较，实验结果表明，ＭＡＬＤＩ－ＴＯＦ质谱是分析环状低聚物的准确、快速的工具之一．Matrix assisted laser desorption ionization time of flight mass spectrometry(MALDI TOF MS) was used to identify cyclic(aryl ether ketone) oligomers, using 2,5 dihydroxybenzoic acid as a matrix, and Na + and K + as cationization agents. The existence of different ring sized cyclic oligomers up to 9 and their distribution were determined and compared with GPC results. The results indicated that MALDI TOF MS was a powerful and rapid analytical tool for the cyclic oligomers.

关 键 词：聚芳醚酮 环状低聚物 MALDI TOF 质谱 组分分布 

分 类 号：O633.1[理学—高分子化学]