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Liquid chromatographic separation of olefin oligomers and its relation to separation of polyolefins - An overview

dc.contributor.authorMacko T.
dc.contributor.authorPasch H.
dc.contributor.authorWang Y.
dc.date.accessioned2011-05-15T15:57:10Z
dc.date.available2011-05-15T15:57:10Z
dc.date.issued2009
dc.identifier.citationMacromolecular Symposia
dc.identifier.citation282
dc.identifier.citation1
dc.identifier.issn10221360
dc.identifier.other10.1002/masy.200950810
dc.identifier.urihttp://hdl.handle.net/10019.1/10255
dc.description.abstractLinear and branched alkanes are oligomers of polyethylene. Alkanes with higher molar masses are called waxes. These substances are widely used as fuels, oils, lubricants, etc. and for these reasons many groups have tried to analyse, separate and characterise alkanes by various methods, including liquid chromatography. Alkanes may be separated according to their size in solution by SEC. In addition to chromatographic systems separating in the SEC mode, various sorbent-solvent systems have been published, where alkanes have been separated one from another by adsorption and/or precipitation mechanism. The mobile phase is either a nonpolar solvent or a polar solvent or a mixture of a solvent and a non-solvent for alkanes. Even near critical conditions, which have several advantages for applications of HPLC in polymer analysis, have been identified for alkanes. Moreover, selective separations of branched alkanes according to their structure have been published. In the majority of these published studies, solvents with low boiling points have been used as the mobile phases, which do not allow dissolution of crystalline polyolefins at atmospheric pressure. However, taking into account experiences with the separation of alkanes, new HPLC systems for the separation of polyolefins may be developed. This is a major challenge and first results are presented in this contribution. © 2009 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.
dc.subjectAlkanes
dc.subjectBranched alkanes
dc.subjectChromatographic systems
dc.subjectLiquid chromatographic separations
dc.subjectMobile phase
dc.subjectMobile phasis
dc.subjectNear-critical conditions
dc.subjectNon-polar solvents
dc.subjectNon-solvents
dc.subjectPolar solvents
dc.subjectPolymer analysis
dc.subjectPrecipitation mechanism
dc.subjectSelective separation
dc.subjectSolvent system
dc.subjectAdsorption
dc.subjectAtmospheric pressure
dc.subjectBoiling point
dc.subjectChromatographic analysis
dc.subjectChromatography
dc.subjectDissolution
dc.subjectGel permeation chromatography
dc.subjectHigh performance liquid chromatography
dc.subjectHigh pressure liquid chromatography
dc.subjectLiquids
dc.subjectOlefins
dc.subjectOligomers
dc.subjectPolyethylenes
dc.subjectPolymer blends
dc.subjectSeparation
dc.subjectSolvents
dc.subjectParaffins
dc.titleLiquid chromatographic separation of olefin oligomers and its relation to separation of polyolefins - An overview
dc.typeConference Paper
dc.description.versionConference Paper


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