Separation of linear polyethylene from isotactic, atactic, and syndiotactic polypropylene by high-temperature adsorption liquid chromatography

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dc.contributor.authorMacko T.
dc.contributor.authorPasch H.
dc.date.accessioned2011-05-15T15:59:55Z
dc.date.available2011-05-15T15:59:55Z
dc.date.issued2009
dc.description.abstractFor the first time polyolefms are separated according to tacticity by liquid chromatography. High-temperature gradient HPLC is shown to be suitable for the separation of polyethylene and polypropylene. As the stationary phase a porous carbon-based material is used; the mobile phase is composed of 1-decanol and 1,2,4-trichlorobenzene. It is shown that at an operating temperature of 160 °C linear polyethylene as well as syndiotactic and atactic polypropylenes are fully adsorbed on the stationary phase from 1-decanol. In contrast, isotactic polypropylene is fully eluted. This behavior provides a novel way for liquid chromatographic separation of polyolefins. After the isocratic elution of isotactic polypropylene with 1-decanol, all retained components are desorbed from the column packing in a gradient of 1-decanol/1,2,4-trichlorobenzene. Nearly baseline-separated peaks are obtained for all components even in the case where the components do not differ in their molar masses. © 2009 American Chemical Society.
dc.description.versionArticle
dc.identifier.citationMacromolecules
dc.identifier.citation42
dc.identifier.citation16
dc.identifier.issn249297
dc.identifier.other10.1021/ma900979n
dc.identifier.urihttp://hdl.handle.net/10019.1/11432
dc.subject1-decanol
dc.subjectAtactic
dc.subjectAtactic polypropylene
dc.subjectColumn packings
dc.subjectHigh temperature
dc.subjectHigh-temperature gradient
dc.subjectIsocratic elution
dc.subjectIsotactic polypropylene
dc.subjectIsotactics
dc.subjectLinear polyethylene
dc.subjectLiquid chromatographic separations
dc.subjectMobile phase
dc.subjectOperating temperature
dc.subjectPorous carbons
dc.subjectStationary phase
dc.subjectSyndiotactic polypropylene
dc.subjectSyndiotactics
dc.subjectTacticities
dc.subjectTrichlorobenzene
dc.subjectAdsorption
dc.subjectChromatographic analysis
dc.subjectChromatography
dc.subjectDesorption
dc.subjectHigh performance liquid chromatography
dc.subjectHigh pressure liquid chromatography
dc.subjectLiquids
dc.subjectPlastic products
dc.subjectPolypropylenes
dc.subjectSeparation
dc.subjectThermoplastics
dc.titleSeparation of linear polyethylene from isotactic, atactic, and syndiotactic polypropylene by high-temperature adsorption liquid chromatography
dc.typeArticle
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