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通过不同色谱技术与基质辅助激光解吸电离飞行时间质谱联用对环氧乙烷-环氧丙烷嵌段共聚物进行表征

Characterization of ethylene oxide-propylene oxide block copolymers by combination of different chromatographic techniques and matrix-assisted laser desorption ionization time-of-flight mass spectroscopy.

作者信息

Malik Muhammad Imran, Trathnigg Bernd, Saf Robert

机构信息

Institute of Chemistry, Karl-Franzens-University, Heinrichstrasse 28, A-8010 Graz, Austria.

出版信息

J Chromatogr A. 2009 Sep 18;1216(38):6627-35. doi: 10.1016/j.chroma.2009.07.067. Epub 2009 Aug 3.

DOI:10.1016/j.chroma.2009.07.067
PMID:19682699
Abstract

Block copolymers of ethylene oxide (EO) and propylene oxide (PO) are characterized by combination of two-dimensional chromatography and MALDI-TOF-MS. Liquid chromatography under critical conditions (LCCC) is used as first dimension and fractions are collected, mobile phase evaporated and diluted in the mobile phase used in second dimension (SEC or LAC). This two-dimensional chromatography in combination of MALDI-TOF-MS gives information about purity of reaction products, presence of the byproducts, chemical composition and molar mass distribution of all the products.

摘要

环氧乙烷（EO）和环氧丙烷（PO）的嵌段共聚物通过二维色谱法和基质辅助激光解吸电离飞行时间质谱（MALDI-TOF-MS）进行表征。临界条件下的液相色谱法（LCCC）用作第一维，收集馏分，蒸发流动相并在用于第二维的流动相（尺寸排阻色谱法或液相吸附色谱法）中稀释。这种二维色谱法与MALDI-TOF-MS相结合，可提供有关反应产物纯度、副产物的存在、所有产物的化学组成和摩尔质量分布的信息。

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