Analysis of ethoxylated polymers by capillary electrophoresis in UV-transparent polymer networks and by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry

Mass Spectrometry of Polymers and Polymer Surfaces

“…While GPC is the most prevalent chromatography technique combined with MALDI analysis, it is not the only one. Thin-layer chromatography (TLC), capillary electrophoresis, temperature gradient inverse chromatography, and gradient reverse-phase liquid chromatography 131,245 are also used. Cumme and co-workers use TLC and gradient reverse-phase liquid chromatography to examine the composition of ethoxylated surfactants in nonionic detergents .…”

Capillary zone electrophoresis for the analysis of phthalate-derivatized hydroxyl- and amino-containing compounds

“…Both CZE [9, 17 -23] and capillary gel electrophoresis [24 -26] have been applied in the field of polymer analysis. Capillary gel electrophoresis is considered able to resolve high molecular mass distributions, whereas CZE is better sui-ted for the analysis of the low molecular mass polymers [21].…”

Micellar Electrokinetic Chromatography Applied to Copolymer Systems with Heterogeneous Distribution

“…These compounds have been mainly analyzed by using CE in the mode of free solution capillary electrophoresis (FSCE) or by capillary gel electrophoresis (CGE), which are based on their different charge/mass ratio or molecular size, respectively. However, in these two modes of CE, the polymer samples must bear electrical charge to accomplish their separation, what makes mandatory the preparation of derivatives of any neutral macromolecule prior to their analysis by FSCE or CGE in order to provide charge. , To solve this problem, the mode of CE denominated micellar electrokinetic chromatography (MEKC) can be an adequate strategy because MEKC allows the separation of neutral compounds. In MEKC a surfactant is added to the separation buffer in concentrations usually higher than their critical micellar concentration (cmc), so that the separation of neutral compounds is based on their different partition coefficients between the micelle and the surrounding buffer.…”