Retention of functional polymers in liquid adsorption chromatography: Effect of the end groups in PEGs and their methyl ethers in different mobile phases 机翻标题: 暂无翻译,请尝试点击翻译按钮。

来源
Journal of separation science
年/卷/期
2010 / 33 / 8
页码
1052-1057
ISSN号
1615-9306
作者单位
Institute of Chemistry, Karl-Franzens-University, Central Polymer Laboratory/Molecular Characteristics (CePol/MC), Heinrichstrasse 28, A-8010 Graz, Austria;Institute of Chemistry, Karl-Franzens-University, Central Polymer Laboratory/Molecular Characteristics (CePol/MC), Heinrichstrasse 28, A-8010 Graz, Austria;
作者
Cuong, N.V.;Trathnigg, B.;
摘要
It is shown that the end group parameter, which describes the influence of the end group on retention, can be determined in RP chromatography from two chromatograms of a nonfunctional and a monofunctional sample, if a sufficient number of peaks with the same number of repeat units in each sample can be reasonably resolved and identified. The same procedure can also be applied for pairs of di- and monofunctional polymers. End group parameters have been determined in three different mobile phases: acetonitrile - water, acetone - water and methanol - water of different compositions. The temperature dependence of the interaction parameter of the repeat unit and the end group parameter has been found to be different, which allows a fine-tuning of retention.
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关键词/主题词
Interaction parameter;Liquid adsorption chromatography;Methyl ether;PEG;RP;
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