Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry of Synthetic Polymers, 5. Analysis of Poly(propylene oxide)s by Coupled Liquid Chromatography at the Critical Point of Adsorption and MALDI-TOF Mass Spectrometry

Keil, C.; Esser, E.; Pasch, Harald

doi:10.1002/1439-2054(20010301)286:3<161::aid-mame161>3.0.co;2-z

Cited by 119 publications

(2 citation statements)

References 3 publications

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“…An excellent separation of the different functionality fractions, for example, can be achieved on RP‐18 columns. Using standard particulate columns (250×4.6 mm id) and a flow rate of 1 mL/min, the analysis time is typically around 30–40 min per sample 2–4. The analysis time can be decreased significantly when instead of a particulate column a monolithic column is used 5.…”

Section: Introductionmentioning

confidence: 99%

Two‐dimensional chromatography of complex polymers, 8. Separation of fatty alcohol ethoxylates simultaneously by end group and chain length

Raust

Bruell

Sinha

et al. 2010

J of Separation Science

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A comprehensive two-dimensional liquid chromatography system was developed to precisely describe the molecular heterogeneity of fatty alcohol ethoxylates. The end-group functionality was analyzed by gradient HPLC while ethylene oxide oligomer distributions were characterized by liquid adsorption chromatography. A baseline separation of all functionality fractions irrespective of the ethylene oxide oligomer chain length was achieved on nonpolar X-Terra C(18) with a methanol-water gradient, whereas an isocratic flow of isopropanol-water on a polar Chromolith Si column gave a separation according to the oligomer chain length without interference of the end-group distribution. The combination of these two methods to conduct online two-dimensional liquid chromatography experiments resulted in a comprehensive two-dimensional picture on the molecular heterogeneity of the sample.

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Section: Introductionmentioning

confidence: 99%

Two‐dimensional chromatography of complex polymers, 8. Separation of fatty alcohol ethoxylates simultaneously by end group and chain length

Raust

Bruell

Sinha

et al. 2010

J of Separation Science

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“…LCCC and SEC combined off-line with MALDI MS detection have been applied to the characterization of poly(propylene glycol) [40] poly(L-lactide)-block-poly (ethylene oxide)-block-poly(L-lactide) triblock copoolymers [41] polyamides-6 [42], and poly(propylene oxide)s [43].…”

Section: Two-dimensional Lc-maldi Msmentioning

confidence: 99%

Polymer characterization by combining liquid chromatography with MALDI and ESI mass spectrometry

Murgasova

Hercules

2002

Anal Bioanal Chem

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High-performance polymers are complex mixtures of materials of different size and chemical composition and with different end groups and architecture. To determine the molecular heterogeneity of such systems, hyphenation of several techniques is required. The value of coupling mass spectrometry (MS) with separation techniques has already been recognized - such methods have proved to be among the most powerful for molecular characterization of complex polymer systems. The review focuses on matrix-assisted laser desorption/ionization (MALDI) and electrospray ionization (ESI) MS coupled with liquid chromatography (LC). Such hyphenation has been used for most polymer analysis by mass spectrometry coupled with separation techniques. The advantages and/or limitations of these techniques for polymer characterization are discussed. Future prospects are briefly outlined.

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Coumarins: Analytical and Preparative Techniques

Skalicka‐Woźniak

Głowniak

2014

Encyclopedia of Analytical Chemistry

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Coumarins are, nowadays, an important group of organic compounds from natural and synthetic sources, possessing a wide range of pharmacological activities. Coumarins comprise a large group of phenolic substances, which occur in plants as secondary metabolites. On account of the significance of this group of compounds, the development of effective methods for the extraction, separation, qualitative and quantitative analyses, and purification remains of high importance. The purpose of the chapter is to present information about methods of analysis and separation of this important group of naturally occurring compounds.

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Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry of Synthetic Polymers, 5. Analysis of Poly(propylene oxide)s by Coupled Liquid Chromatography at the Critical Point of Adsorption and MALDI-TOF Mass Spectrometry

Cited by 119 publications

References 3 publications

Two‐dimensional chromatography of complex polymers, 8. Separation of fatty alcohol ethoxylates simultaneously by end group and chain length

Two‐dimensional chromatography of complex polymers, 8. Separation of fatty alcohol ethoxylates simultaneously by end group and chain length

Polymer characterization by combining liquid chromatography with MALDI and ESI mass spectrometry

Coumarins: Analytical and Preparative Techniques

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