✦ LIBER ✦

Characterization of poly(methyl methacrylate) by matrix-assisted laser desorption/ionization mass spectrometry. a comparison with supercritical fluid chromatography and gel permeation chromatography

✍ Scribed by Norio Sakurada; Tsuyoshi Fukuo; Ryuichi Arakawa; Koichi Ute; Koichi Hatada

Publisher: John Wiley and Sons
Year: 1998
Tongue: English
Weight: 65 KB
Volume: 12
Category: Article
ISSN: 0951-4198
DOI: 10.1002/(sici)1097-0231(19981215)12:23<1895::aid-rcm414>3.0.co;2-2

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✦ Synopsis

The laser power dependence on matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOFMS) has been studied by mixing equimolar amounts of three kinds of monodisperse poly(methyl methacrylate) (PMMA). Employing optimum laser power, the molecular weight information of the polydisperse PMMA was obtained, and the result compared with that obtained from supercritical fluid chromatography (SFC) and gel permeation chromatography (GPC). The average molecular weight of PMMA, obtained from the MALDI-MS experiment, was found to be higher than that obtained from both SFC and GPC. The result implies that MALDI-MS can detect higher molecular species of the polymer.

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