合成高分子的质谱研究  

Characterization of Synthetic Polymer by Matrix Assisted Laser Desorption Ionization Time-of-Flight (MALDI/TOF) Mass Spectrometry

作　　者：何美玉[1] 何江涛[1] 贺晓然[1] 孟鸿 黄维 

机构地区：[1]北京大学化学与分子工程学院 [2]新加坡大学化学系

出　　处：《质谱学报》2000年第3期13-14,共2页Journal of Chinese Mass Spectrometry Society

摘　　要：The molecular weight and molecular weight distribution greatly affect the properties of a polymer Classical polymer weight determination methods involve typically indirect methods, such as gel permeation chromatography(GPC), and light scattering .However, these methods are time-consuming and can not provide absolute molecular weight .MALDI/TOF has the ability to directly measure absolute molecular weight of polymer and molecular weight distribution. Besides average molecular weight, MALDI-TOF can provide information about the repeat unit and end group of the polymer. We analyzed several synthetic polymers by MALDI/TOF .Their average molecular weights were calculated and their molecular structures were proposed.The molecular weight and molecular weight distribution greatly affect the properties of a polymer Classical polymer weight determination methods involve typically indirect methods, such as gel permeation chromatography(GPC), and light scattering .However, these methods are time-consuming and can not provide absolute molecular weight .MALDI/TOF has the ability to directly measure absolute molecular weight of polymer and molecular weight distribution. Besides average molecular weight, MALDI-TOF can provide information about the repeat unit and end group of the polymer. We analyzed several synthetic polymers by MALDI/TOF .Their average molecular weights were calculated and their molecular structures were proposed.

关 键 词：合成高分子 分子量 分子量分布 测定 质谱法 

分 类 号：O631.6[理学—高分子化学] O657.63[理学—化学]